example of controlling idea essay

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• Online Guide to Writing

Thesis Statement and Controlling Idea

So what? This is the question you will get asked if your thesis statement, or main idea, is not obvious in your paper. Your thesis statement is the most important part of your writing; without it, your paper doesn’t have a main point or stance. A thesis statement states the purpose and topic of your writing, and the controlling idea indicates the direction and, often, the writing strategy you will adopt. 

Generally, your thesis is placed at the end of your introduction and is a concise and simple sentence that combines your topic and your position on the topic. Like a road map, your thesis lets your readers know what to expect from the rest of your paper. Your body paragraphs support it, and your essay lacks direction without it.

It is important to keep in mind that this early in your writing, your thesis statement is really a working thesis that you use to begin thinking about your topic. You may revise this thesis many times before you are finished thinking and ready to write your final draft. Below are some sample thesis statements.  

YOUR TOPIC + POSITION ON TOPIC = THESIS STATEMENT

Thesis statement do's and don'ts.

Present an argument, stance, or claim. Can your audience argue with it? 

Provide a key to the organization of your paper. Can you construct body paragraphs that support it? 

Mirror the assignment prompt. Are you following what is expected of you?

Present the thesis at the end of the introduction.  

Answer the question: “so what?”  

Present an argument that can be supported by reputable research. Is your argument logical?

Embrace the “how” and “why” elements. It’s a great strategy to present the problem, examine why it’s a problem, and show how it can be fixed. 

Include announcement style language like “this paper will discuss” or “this will be shown in this essay.” 

Be informative only with no argument or stance, such as, “Some high school seniors decide to take a gap year.” 

Include overly broad or generalized statements like, “Kids of this generation are lazy.”

Force the reader to guess what the paper will prove or discuss 

Be questions. 

Key Takeaways

Your thesis is one statement at the end of your introduction and should be clear, concise, and arguable.

Without a thesis, your paper lacks direction and purpose. 

Mailing Address: 3501 University Blvd. East, Adelphi, MD 20783 This work is licensed under a  Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License . © 2022 UMGC. All links to external sites were verified at the time of publication. UMGC is not responsible for the validity or integrity of information located at external sites.

Table of Contents: Online Guide to Writing

Chapter 1: College Writing

How Does College Writing Differ from Workplace Writing?

What Is College Writing?

Why So Much Emphasis on Writing?

Chapter 2: The Writing Process

Doing Exploratory Research

Getting from Notes to Your Draft

Introduction

Prewriting - Techniques to Get Started - Mining Your Intuition

Prewriting: Targeting Your Audience

Prewriting: Techniques to Get Started

Prewriting: Understanding Your Assignment

Rewriting: Being Your Own Critic

Rewriting: Creating a Revision Strategy

Rewriting: Getting Feedback

Rewriting: The Final Draft

Techniques to Get Started - Outlining

Techniques to Get Started - Using Systematic Techniques

Writing: Getting from Notes to Your Draft - Freewriting

Writing: Getting from Notes to Your Draft - Summarizing Your Ideas

Writing: Outlining What You Will Write

Chapter 3: Thinking Strategies

A Word About Style, Voice, and Tone

A Word About Style, Voice, and Tone: Style Through Vocabulary and Diction

Critical Strategies and Writing

Critical Strategies and Writing: Analysis

Critical Strategies and Writing: Evaluation

Critical Strategies and Writing: Persuasion

Critical Strategies and Writing: Synthesis

Developing a Paper Using Strategies

Kinds of Assignments You Will Write

Patterns for Presenting Information

Patterns for Presenting Information: Critiques

Patterns for Presenting Information: Discussing Raw Data

Patterns for Presenting Information: General-to-Specific Pattern

Patterns for Presenting Information: Problem-Cause-Solution Pattern

Patterns for Presenting Information: Specific-to-General Pattern

Patterns for Presenting Information: Summaries and Abstracts

Supporting with Research and Examples

Writing Essay Examinations

Writing Essay Examinations: Make Your Answer Relevant and Complete

Writing Essay Examinations: Organize Thinking Before Writing

Writing Essay Examinations: Read and Understand the Question

Chapter 4: The Research Process

Planning and Writing a Research Paper

Planning and Writing a Research Paper: Ask a Research Question

Planning and Writing a Research Paper: Cite Sources

Planning and Writing a Research Paper: Collect Evidence

Planning and Writing a Research Paper: Decide Your Point of View, or Role, for Your Research

Planning and Writing a Research Paper: Draw Conclusions

Planning and Writing a Research Paper: Find a Topic and Get an Overview

Planning and Writing a Research Paper: Manage Your Resources

Planning and Writing a Research Paper: Outline

Planning and Writing a Research Paper: Survey the Literature

Planning and Writing a Research Paper: Work Your Sources into Your Research Writing

Research Resources: Where Are Research Resources Found? - Human Resources

Research Resources: What Are Research Resources?

Research Resources: Where Are Research Resources Found?

Research Resources: Where Are Research Resources Found? - Electronic Resources

Research Resources: Where Are Research Resources Found? - Print Resources

Structuring the Research Paper: Formal Research Structure

Structuring the Research Paper: Informal Research Structure

The Nature of Research

The Research Assignment: How Should Research Sources Be Evaluated?

The Research Assignment: When Is Research Needed?

The Research Assignment: Why Perform Research?

Chapter 5: Academic Integrity

Academic Integrity

Giving Credit to Sources

Giving Credit to Sources: Copyright Laws

Giving Credit to Sources: Documentation

Giving Credit to Sources: Style Guides

Integrating Sources

Practicing Academic Integrity

Practicing Academic Integrity: Keeping Accurate Records

Practicing Academic Integrity: Managing Source Material

Practicing Academic Integrity: Managing Source Material - Paraphrasing Your Source

Practicing Academic Integrity: Managing Source Material - Quoting Your Source

Practicing Academic Integrity: Managing Source Material - Summarizing Your Sources

Types of Documentation

Types of Documentation: Bibliographies and Source Lists

Types of Documentation: Citing World Wide Web Sources

Types of Documentation: In-Text or Parenthetical Citations

Types of Documentation: In-Text or Parenthetical Citations - APA Style

Types of Documentation: In-Text or Parenthetical Citations - CSE/CBE Style

Types of Documentation: In-Text or Parenthetical Citations - Chicago Style

Types of Documentation: In-Text or Parenthetical Citations - MLA Style

Types of Documentation: Note Citations

Chapter 6: Using Library Resources

Finding Library Resources

Chapter 7: Assessing Your Writing

How Is Writing Graded?

How Is Writing Graded?: A General Assessment Tool

The Draft Stage

The Draft Stage: The First Draft

The Draft Stage: The Revision Process and the Final Draft

The Draft Stage: Using Feedback

The Research Stage

Using Assessment to Improve Your Writing

Chapter 8: Other Frequently Assigned Papers

Reviews and Reaction Papers: Article and Book Reviews

Reviews and Reaction Papers: Reaction Papers

Writing Arguments

Writing Arguments: Adapting the Argument Structure

Writing Arguments: Purposes of Argument

Writing Arguments: References to Consult for Writing Arguments

Writing Arguments: Steps to Writing an Argument - Anticipate Active Opposition

Writing Arguments: Steps to Writing an Argument - Determine Your Organization

Writing Arguments: Steps to Writing an Argument - Develop Your Argument

Writing Arguments: Steps to Writing an Argument - Introduce Your Argument

Writing Arguments: Steps to Writing an Argument - State Your Thesis or Proposition

Writing Arguments: Steps to Writing an Argument - Write Your Conclusion

Writing Arguments: Types of Argument

Appendix A: Books to Help Improve Your Writing

Dictionaries

General Style Manuals

Researching on the Internet

Special Style Manuals

Writing Handbooks

Appendix B: Collaborative Writing and Peer Reviewing

Collaborative Writing: Assignments to Accompany the Group Project

Collaborative Writing: Informal Progress Report

Collaborative Writing: Issues to Resolve

Collaborative Writing: Methodology

Collaborative Writing: Peer Evaluation

Collaborative Writing: Tasks of Collaborative Writing Group Members

Collaborative Writing: Writing Plan

General Introduction

Peer Reviewing

Appendix C: Developing an Improvement Plan

Working with Your Instructor’s Comments and Grades

Appendix D: Writing Plan and Project Schedule

Devising a Writing Project Plan and Schedule

Reviewing Your Plan with Others

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Controlling Idea How To: Writing Exercise

This writing exercise will help you develop a research question find credible sources and outline your controlling idea.

Controlling Idea Writing Exercise Outcome: 

Today you will narrow your research topic down to a single research question. Then you will find credible sources and outline your controlling idea (also known as a thesis statement).

If you want to read more about writing a thesis statement click here.

Controlling Idea Writing Exercise: 

To write a controlling idea, you need to focus your research on a single topic and a specific question about that topic. This question is called a research question. 

In the box below, list your essay’s broad topic,  i.e., Volcanoes  or  the Vietnam War .

If you do not yet have a topic, list five topics that interest you, then write about the topic you have the most questions about. 

Now you will need a specific question about your topic. 

You may start with broad questions like “How do Volcanoes work?” 

In the box below, write any questions you have about your topic to start your research. 

Examples of topic questions: 

• What are volcanoes? 
• Where are the most active volcanoes in the world? 
• Why do people build cities near volcanoes? 

Eliminate any questions that are too broad for a research paper, like, “What are volcanoes?” 

Now, choose one question that you are curious about and is specific enough to research.  

This sentence is your research question. 

Finding Credible Sources 

Start your research online by plugging your research question into a search engine or online database. Most of the sources you find will be secondary sources. 

Credible online sources: 

• Published in the last 10 years
• .gov or .edu 
• Well-known author 
• Academic databases ( such as JSTOR ) 

Bookmark these articles in a separate folder for easy retrieval. 

In the box below, list the URLs for five credible secondary sources that give you answers to your research question. 

Primary sources are authoritative, first-hand accounts of your research topic. It takes more work to find these sources. 

Where to find primary sources: 

• College library/ research center
• national archives
• Academic database

In the box below, list three places to contact or visit for primary sources. 

Writing a Controlling Idea & Supporting Details

To write your controlling idea, answer your research question based on the research you’ve done. 

You will also have reasons to support your answer. Your answer, combined with supporting details, will create a controlling idea. 

Research Question :  Why do people build cities near volcanoes? 

Answer/ Main Idea:   People build cities near volcanoes to harness geothermal energy. These cities also gain an economic benefit because they are attractive tourist destinations. 

This statement is an example of a controlling idea that follows a simple formula: 

Main Idea + Supporting Details = Controlling Idea (or Thesis Statement) 

People build cities near volcanoes ⇦  Main Idea  to harness geothermal energy. ⇦  Supporting Detail  These cities also gain an economic benefit because they are attractive tourist destinations.⇦  Supporting Detail

Now that you’ve completed your formulated a research question found sources, and combined your main idea and supporting details, you’ve got your controlling idea. Do you have a better way to create a controlling idea? Let me know in the comments! 

For help researching your topic check out these free online resources:

WorldCat.org

Archives.gov

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Thesis statement.

Definition:

The thesis is usually considered the most important sentence of your essay because it outlines the central purpose of your essay in one place. A good thesis will link the subject of an essay with a controlling idea. Consider, for example, the following thesis:

People in the past spent a great deal of effort protecting themselves from witches. Subject: people feared witches Controlling Idea: people spent a great deal of effort protecting themselves

In a short essay, a thesis statement appears at, or near, the end of the introductory paragraph of the paper so that readers know the topic of the essay before they see the writer's statement of the central purpose of the essay. This way the first paragraph helps the reader understand why the writer is writing.

A thesis should be narrow in focus in order to allow the fullest exploration of its issues as possible, and it should reflect the type of paper that follows, whether it be persuasive or informative. Narrowing the focus of the thesis may require posing questions about it to yourself before committing to a final version.

What follows is a method for writing thesis statements that many writers have found useful (we found it in Chapter 3 of The Allyn & Bacon Handbook ).

1. Decide what you are writing about:

A clear, concise thesis statement does more than outline the subject in question; it makes the reader aware of the writer's stand on the subject in question, connecting a subject with a controlling idea.

2. Think about all the elements your paper will deal with:

A thesis generally consists of a subject that contains within itself a number of smaller facts; the topic sentence of each paragraph that makes up the body of the paper should refer (in some clear way) back to the ideas contained within the thesis statement in order to keep the paper from digressing.

3. Think about the purpose and tone of your paper:

A thesis statement should contain the main point of the paper and suggest to the reader a direction that the paper will take in exploring, proving, or disproving that main point.

4. State your main point in a sentence or two:

A good writer can assert the main idea of a short, coherent essay briefly. Instead of rambling, be as straightforward as possible.

5. Revise your thesis as you develop your paper:

A final version of a thesis statement will only be available after a draft of the paper it is a part of has been completed. The focus of the paper may change and evolve over the period it is written in; necessarily, the thesis statement should be revised to reflect the alterations in the paper.

Few writers finish a paper writing about the exact topic they begin with. While you write a paper, your main point may change. As you're finishing, make sure your thesis statement has changed along with the subject and controlling ideas of your paper.

Questions, comments, and other sundry things may be sent to [email protected]

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What this handout is about

This handout will help you understand how paragraphs are formed, how to develop stronger paragraphs, and how to completely and clearly express your ideas.

What is a paragraph?

Paragraphs are the building blocks of papers. Many students define paragraphs in terms of length: a paragraph is a group of at least five sentences, a paragraph is half a page long, etc. In reality, though, the unity and coherence of ideas among sentences is what constitutes a paragraph. A paragraph is defined as “a group of sentences or a single sentence that forms a unit” (Lunsford and Connors 116). Length and appearance do not determine whether a section in a paper is a paragraph. For instance, in some styles of writing, particularly journalistic styles, a paragraph can be just one sentence long. Ultimately, a paragraph is a sentence or group of sentences that support one main idea. In this handout, we will refer to this as the “controlling idea,” because it controls what happens in the rest of the paragraph.

How do I decide what to put in a paragraph?

Before you can begin to determine what the composition of a particular paragraph will be, you must first decide on an argument and a working thesis statement for your paper. What is the most important idea that you are trying to convey to your reader? The information in each paragraph must be related to that idea. In other words, your paragraphs should remind your reader that there is a recurrent relationship between your thesis and the information in each paragraph. A working thesis functions like a seed from which your paper, and your ideas, will grow. The whole process is an organic one—a natural progression from a seed to a full-blown paper where there are direct, familial relationships between all of the ideas in the paper.

The decision about what to put into your paragraphs begins with the germination of a seed of ideas; this “germination process” is better known as brainstorming . There are many techniques for brainstorming; whichever one you choose, this stage of paragraph development cannot be skipped. Building paragraphs can be like building a skyscraper: there must be a well-planned foundation that supports what you are building. Any cracks, inconsistencies, or other corruptions of the foundation can cause your whole paper to crumble.

So, let’s suppose that you have done some brainstorming to develop your thesis. What else should you keep in mind as you begin to create paragraphs? Every paragraph in a paper should be :

• Unified : All of the sentences in a single paragraph should be related to a single controlling idea (often expressed in the topic sentence of the paragraph).
• Clearly related to the thesis : The sentences should all refer to the central idea, or thesis, of the paper (Rosen and Behrens 119).
• Coherent : The sentences should be arranged in a logical manner and should follow a definite plan for development (Rosen and Behrens 119).
• Well-developed : Every idea discussed in the paragraph should be adequately explained and supported through evidence and details that work together to explain the paragraph’s controlling idea (Rosen and Behrens 119).

How do I organize a paragraph?

There are many different ways to organize a paragraph. The organization you choose will depend on the controlling idea of the paragraph. Below are a few possibilities for organization, with links to brief examples:

• Narration : Tell a story. Go chronologically, from start to finish. ( See an example. )
• Description : Provide specific details about what something looks, smells, tastes, sounds, or feels like. Organize spatially, in order of appearance, or by topic. ( See an example. )
• Process : Explain how something works, step by step. Perhaps follow a sequence—first, second, third. ( See an example. )
• Classification : Separate into groups or explain the various parts of a topic. ( See an example. )
• Illustration : Give examples and explain how those examples support your point. (See an example in the 5-step process below.)

Illustration paragraph: a 5-step example

From the list above, let’s choose “illustration” as our rhetorical purpose. We’ll walk through a 5-step process for building a paragraph that illustrates a point in an argument. For each step there is an explanation and example. Our example paragraph will be about human misconceptions of piranhas.

Step 1. Decide on a controlling idea and create a topic sentence

Paragraph development begins with the formulation of the controlling idea. This idea directs the paragraph’s development. Often, the controlling idea of a paragraph will appear in the form of a topic sentence. In some cases, you may need more than one sentence to express a paragraph’s controlling idea.

Controlling idea and topic sentence — Despite the fact that piranhas are relatively harmless, many people continue to believe the pervasive myth that piranhas are dangerous to humans.

Step 2. Elaborate on the controlling idea

Paragraph development continues with an elaboration on the controlling idea, perhaps with an explanation, implication, or statement about significance. Our example offers a possible explanation for the pervasiveness of the myth.

Elaboration — This impression of piranhas is exacerbated by their mischaracterization in popular media.

Step 3. Give an example (or multiple examples)

Paragraph development progresses with an example (or more) that illustrates the claims made in the previous sentences.

Example — For example, the promotional poster for the 1978 horror film Piranha features an oversized piranha poised to bite the leg of an unsuspecting woman.

Step 4. Explain the example(s)

The next movement in paragraph development is an explanation of each example and its relevance to the topic sentence. The explanation should demonstrate the value of the example as evidence to support the major claim, or focus, in your paragraph.

Continue the pattern of giving examples and explaining them until all points/examples that the writer deems necessary have been made and explained. NONE of your examples should be left unexplained. You might be able to explain the relationship between the example and the topic sentence in the same sentence which introduced the example. More often, however, you will need to explain that relationship in a separate sentence.

Explanation for example — Such a terrifying representation easily captures the imagination and promotes unnecessary fear.

Notice that the example and explanation steps of this 5-step process (steps 3 and 4) can be repeated as needed. The idea is that you continue to use this pattern until you have completely developed the main idea of the paragraph.

Step 5. Complete the paragraph’s idea or transition into the next paragraph

The final movement in paragraph development involves tying up the loose ends of the paragraph. At this point, you can remind your reader about the relevance of the information to the larger paper, or you can make a concluding point for this example. You might, however, simply transition to the next paragraph.

Sentences for completing a paragraph — While the trope of the man-eating piranhas lends excitement to the adventure stories, it bears little resemblance to the real-life piranha. By paying more attention to fact than fiction, humans may finally be able to let go of this inaccurate belief.

Finished paragraph

Despite the fact that piranhas are relatively harmless, many people continue to believe the pervasive myth that piranhas are dangerous to humans. This impression of piranhas is exacerbated by their mischaracterization in popular media. For example, the promotional poster for the 1978 horror film Piranha features an oversized piranha poised to bite the leg of an unsuspecting woman. Such a terrifying representation easily captures the imagination and promotes unnecessary fear. While the trope of the man-eating piranhas lends excitement to the adventure stories, it bears little resemblance to the real-life piranha. By paying more attention to fact than fiction, humans may finally be able to let go of this inaccurate belief.

Troubleshooting paragraphs

Problem: the paragraph has no topic sentence.

Imagine each paragraph as a sandwich. The real content of the sandwich—the meat or other filling—is in the middle. It includes all the evidence you need to make the point. But it gets kind of messy to eat a sandwich without any bread. Your readers don’t know what to do with all the evidence you’ve given them. So, the top slice of bread (the first sentence of the paragraph) explains the topic (or controlling idea) of the paragraph. And, the bottom slice (the last sentence of the paragraph) tells the reader how the paragraph relates to the broader argument. In the original and revised paragraphs below, notice how a topic sentence expressing the controlling idea tells the reader the point of all the evidence.

Original paragraph

Piranhas rarely feed on large animals; they eat smaller fish and aquatic plants. When confronted with humans, piranhas’ first instinct is to flee, not attack. Their fear of humans makes sense. Far more piranhas are eaten by people than people are eaten by piranhas. If the fish are well-fed, they won’t bite humans.

Revised paragraph

Although most people consider piranhas to be quite dangerous, they are, for the most part, entirely harmless. Piranhas rarely feed on large animals; they eat smaller fish and aquatic plants. When confronted with humans, piranhas’ first instinct is to flee, not attack. Their fear of humans makes sense. Far more piranhas are eaten by people than people are eaten by piranhas. If the fish are well-fed, they won’t bite humans.

Once you have mastered the use of topic sentences, you may decide that the topic sentence for a particular paragraph really shouldn’t be the first sentence of the paragraph. This is fine—the topic sentence can actually go at the beginning, middle, or end of a paragraph; what’s important is that it is in there somewhere so that readers know what the main idea of the paragraph is and how it relates back to the thesis of your paper. Suppose that we wanted to start the piranha paragraph with a transition sentence—something that reminds the reader of what happened in the previous paragraph—rather than with the topic sentence. Let’s suppose that the previous paragraph was about all kinds of animals that people are afraid of, like sharks, snakes, and spiders. Our paragraph might look like this (the topic sentence is bold):

Like sharks, snakes, and spiders, piranhas are widely feared. Although most people consider piranhas to be quite dangerous, they are, for the most part, entirely harmless . Piranhas rarely feed on large animals; they eat smaller fish and aquatic plants. When confronted with humans, piranhas’ first instinct is to flee, not attack. Their fear of humans makes sense. Far more piranhas are eaten by people than people are eaten by piranhas. If the fish are well-fed, they won’t bite humans.

Problem: the paragraph has more than one controlling idea

If a paragraph has more than one main idea, consider eliminating sentences that relate to the second idea, or split the paragraph into two or more paragraphs, each with only one main idea. Watch our short video on reverse outlining to learn a quick way to test whether your paragraphs are unified. In the following paragraph, the final two sentences branch off into a different topic; so, the revised paragraph eliminates them and concludes with a sentence that reminds the reader of the paragraph’s main idea.

Although most people consider piranhas to be quite dangerous, they are, for the most part, entirely harmless. Piranhas rarely feed on large animals; they eat smaller fish and aquatic plants. When confronted with humans, piranhas’ first instinct is to flee, not attack. Their fear of humans makes sense. Far more piranhas are eaten by people than people are eaten by piranhas. A number of South American groups eat piranhas. They fry or grill the fish and then serve them with coconut milk or tucupi, a sauce made from fermented manioc juices.

Problem: transitions are needed within the paragraph

You are probably familiar with the idea that transitions may be needed between paragraphs or sections in a paper (see our handout on transitions ). Sometimes they are also helpful within the body of a single paragraph. Within a paragraph, transitions are often single words or short phrases that help to establish relationships between ideas and to create a logical progression of those ideas in a paragraph. This is especially likely to be true within paragraphs that discuss multiple examples. Let’s take a look at a version of our piranha paragraph that uses transitions to orient the reader:

Although most people consider piranhas to be quite dangerous, they are, except in two main situations, entirely harmless. Piranhas rarely feed on large animals; they eat smaller fish and aquatic plants. When confronted with humans, piranhas’ instinct is to flee, not attack. But there are two situations in which a piranha bite is likely. The first is when a frightened piranha is lifted out of the water—for example, if it has been caught in a fishing net. The second is when the water level in pools where piranhas are living falls too low. A large number of fish may be trapped in a single pool, and if they are hungry, they may attack anything that enters the water.

In this example, you can see how the phrases “the first” and “the second” help the reader follow the organization of the ideas in the paragraph.

Works consulted

We consulted these works while writing this handout. This is not a comprehensive list of resources on the handout’s topic, and we encourage you to do your own research to find additional publications. Please do not use this list as a model for the format of your own reference list, as it may not match the citation style you are using. For guidance on formatting citations, please see the UNC Libraries citation tutorial . We revise these tips periodically and welcome feedback.

Lunsford, Andrea. 2008. The St. Martin’s Handbook: Annotated Instructor’s Edition , 6th ed. New York: St. Martin’s.

Rosen, Leonard J., and Laurence Behrens. 2003. The Allyn & Bacon Handbook , 5th ed. New York: Longman.

You may reproduce it for non-commercial use if you use the entire handout and attribute the source: The Writing Center, University of North Carolina at Chapel Hill

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26 Planning a Discursive Essay

Discursive essay – description.

A discursive essay is a form of critical essay that attempts to provide the reader with a balanced argument on a topic, supported by evidence. It requires critical thinking, as well as sound and valid arguments (see Chapter 25) that acknowledge and analyse arguments both for and against any given topic, plus discursive essay writing appeals to reason, not emotions or opinions. While it may draw some tentative conclusions, based on evidence, the main aim of a discursive essay is to inform the reader of the key arguments and allow them to arrive at their own conclusion.

The writer needs to research the topic thoroughly to present more than one perspective and should check their own biases and assumptions through critical reflection (see Chapter 30).

Unlike persuasive writing, the writer does not need to have knowledge of the audience, though should write using academic tone and language (see Chapter 20).

Choose Your Topic Carefully

A basic guide to choosing an assignment topic is available in Chapter 23, however choosing a topic for a discursive essay means considering more than one perspective. Not only do you need to find information about the topic via academic sources, you need to be able to construct a worthwhile discussion, moving from idea to idea. Therefore, more forward planning is required. The following are decisions that need to be considered when choosing a discursive essay topic:

• These will become the controlling ideas for your three body paragraphs (some essays may require more). Each controlling idea will need arguments both for and against.
• For example, if my topic is “renewable energy” and my three main (controlling) ideas are “cost”, “storage”, “environmental impact”, then I will need to consider arguments both for and against each of these three concepts. I will also need to have good academic sources with examples or evidence to support my claim and counter claim for each controlling idea (More about this in Chapter 27).
• Am I able to write a thesis statement about this topic based on the available research? In other words, do my own ideas align with the available research, or am I going to be struggling to support my own ideas due to a lack of academic sources or research? You need to be smart about your topic choice. Do not make it harder than it has to be. Writing a discursive essay is challenging enough without struggling to find appropriate sources.
• For example, perhaps I find a great academic journal article about the uptake of solar panel installation in suburban Australia and how this household decision is cost-effective long-term, locally stored, and has minimal, even beneficial environmental impact due to the lowering of carbon emissions. Seems too good to be true, yet it is perfect for my assignment. I would have to then find arguments AGAINST everything in the article that supports transitioning suburbs to solar power. I would have to challenge the cost-effectiveness, the storage, and the environmental impact study. Now, all of a sudden my task just became much more challenging.
• There may be vast numbers of journal articles written about your topic, but consider how relevant they may be to your tentative thesis statement. It takes a great deal of time to search for appropriate academic sources. Do you have a good internet connection at home or will you need to spend some quality time at the library? Setting time aside to complete your essay research is crucial for success.

It is only through complete forward planning about the shape and content of your essay that you may be able to choose the topic that best suits your interests, academic ability and time management. Consider how you will approach the overall project, not only the next step.

Research Your Topic

When completing a library search for online peer reviewed journal articles, do not forget to use Boolean Operators to refine or narrow your search field. Standard Boolean Operators are (capitalized) AND, OR and NOT. While using OR will expand your search, AND and NOT will reduce the scope of your search. For example, if I want information on ageism and care giving, but I only want it to relate to the elderly, I might use the following to search a database: ageism AND care NOT children. Remember to keep track of your search strings (like the one just used) and then you’ll know what worked and what didn’t as you come and go from your academic research.

The UQ Library provides an excellent step-by-step guide to searching databases:

Searching in databases – Library – University of Queensland (uq.edu.au)

Did you know that you can also link the UQ Library to Google Scholar? This link tells you how:

Google Scholar – Library – University of Queensland (uq.edu.au)

Write the Thesis Statement

The concept of a thesis statement was introduced in Chapter 21. The information below relates specifically to a discursive essay thesis statement.

As noted in the introduction to this chapter, the discursive essay should not take a stance and therefore the thesis statement must also impartially indicate more than one perspective. The goal is to present both sides of an argument equally and allow the reader to make an informed and well-reasoned choice after providing supporting evidence for each side of the argument.

Sample thesis statements: Solar energy is a cost -effective solution to burning fossil fuels for electricity , however lower income families cannot afford the installation costs .

Some studies indicate that teacher comments written in red may have no effect on students’ emotions , however other studies suggest that seeing red ink on papers could cause some students unnecessary stress. [1]

According to social justice principles, education should be available to all , yet historically, the intellectually and physically impaired may have been exempt from participation due to their supposed inability to learn. [2]

This is where your pros and cons list comes into play. For each pro, or positive statement you make, about your topic, create an equivalent con, or negative statement and this will enable you to arrive at two opposing assertions – the claim and counter claim.

While there may be multiple arguments or perspectives related to your essay topic, it is important that you match each claim with a counter-claim. This applies to the thesis statement and each supporting argument within the body paragraphs of the essay.

It is not just a matter of agreeing or disagreeing. A neutral tone is crucial. Do not include positive or negative leading statements, such as “It is undeniable that…” or “One should not accept the view that…”. You are NOT attempting to persuade the reader to choose one viewpoint over another.

Leading statements / language will be discussed further, in class, within term three of the Academic English course.

Thesis Structure:

• Note the two sides (indicated in green and orange)
• Note the use of tentative language: “Some studies”, “may have”, “could cause”, “some students”
• As the thesis is yet to be discussed in-depth, and you are not an expert in the field, do not use definitive language
• The statement is also one sentence, with a “pivot point” in the middle, with a comma and signposting to indicate a contradictory perspective (in black). Other examples include, nevertheless, though, although, regardless, yet, albeit. DO NOT use the word “but” as it lacks academic tone. Some signposts (e.g., although, though, while) may be placed at the start of the two clauses rather than in the middle – just remember the comma, for example, “While some studies suggest solar energy is cost-effective, other critical research questions its affordability.”
• Also note that it is based on preliminary research and not opinion: “some studies”, “other studies”, “according to social justice principles”, “critical research”.

Claims and Counter Claims

NOTE: Please do not confuse the words ‘claim’ and ‘counter-claim’ with moral or value judgements about right/wrong, good/bad, successful/unsuccessful, or the like. The term ‘claim’ simply refers to the first position or argument you put forward (whether for or against), and ‘counter-claim’ is the alternate position or argument.

In a discursive essay the goal is to present both sides equally and then draw some tentative conclusions based on the evidence presented.

• To formulate your claims and counter claims, write a list of pros and cons.
• For each pro there should be a corresponding con.
• Three sets of pros and cons will be required for your discursive essay. One set for each body paragraph. These become your claims and counter claims.
• For a longer essay, you would need further claims and counter claims.
• Some instructors prefer students to keep the pros and cons in the same order across the body paragraphs. Each paragraph would then have a pro followed by a con or else a con followed by a pro. The order should align with your thesis; if the thesis gives a pro view of the topic followed by a negative view (con) then the paragraphs should also start with the pro and follow with the con, or else vice versa. If not aligned and consistent, the reader may easily become confused as the argument proceeds. Ask your teacher if this is a requirement for your assessment.

Use previous chapters to explore your chosen topic through concept mapping (Chapter 18) and essay outlining (Chapter 19), with one variance; you must include your proposed claims and counter claims in your proposed paragraph structures. What follows is a generic model for a discursive essay. The following Chapter 27 will examine this in further details.

Sample Discursive Essay Outline 

The paragraphs are continuous; the dot-points are only meant to indicate content.

Introduction

• Thesis statement
• Essay outline (including 3 controlling ideas)

Body Paragraphs X 3 (Elaboration and evidence will be more than one sentence, though the topic, claim and counter claim should be succinct)

• T opic sentence, including 1/3 controlling ideas (the topic remains the same throughout the entire essay; it is the controlling idea that changes)
• A claim/assertion about the controlling idea
• E laboration – more information about the claim
• E vidence -academic research (Don’t forget to tell the reader how / why the evidence supports the claim. Be explicit in your E valuation rather than assuming the connection is obvious to the reader)
• A counter claim (remember it must be COUNTER to the claim you made, not about something different)
• E laboration – more information about the counter claim
• E vidence – academic research (Don’t forget to tell the reader how / why the evidence supports the claim. Be explicit in your E valuation rather than assuming the connection is obvious to the reader)
• Concluding sentence – L inks back to the topic and/or the next controlling idea in the following paragraph

Mirror the introduction. The essay outline should have stated the plan for the essay – “This essay will discuss…”, therefore the conclusion should identify that this has been fulfilled, “This essay has discussed…”, plus summarise the controlling ideas and key arguments. ONLY draw tentative conclusions BOTH for and against, allowing the reader to make up their own mind about the topic. Also remember to re-state the thesis in the conclusion. If it is part of the marking criteria, you should also include a recommendation or prediction about the future use or cost/benefit of the chosen topic/concept.

A word of warning, many students fall into the generic realm of stating that there should be further research on their topic or in the field of study. This is a gross statement of the obvious as all academia is ongoing. Try to be more practical with your recommendations and also think about who would instigate them and where the funding might come from.

This chapter gives an overview of what a discursive essay is and a few things to consider when choosing your topic. It also provides a generic outline for a discursive essay structure. The following chapter examines the structure in further detail.

• Inez, S. M. (2018, September 10). What is a discursive essay, and how do you write a good one? Kibin. ↵
• Hale, A., & Basides, H. (2013). The keys to academic English. Palgrave ↵

researched, reliable, written by academics and published by reputable publishers; often, but not always peer reviewed

assertion, maintain as fact

The term ‘claim’ simply refers to the first position or argument you put forward (whether for or against), and ‘counter-claim’ is the alternate position or argument.

Academic Writing Skills Copyright © 2021 by Patricia Williamson is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License , except where otherwise noted.

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Using the handout provided, analyze the requirements of a controlling idea and introductory paragraph. Then, compose your own.

Scoring Guide

Work Meets or Exceeds Expectations if:

• The writer establishes a strong controlling idea with a very clear purpose that addresses the task prompt
• The introductory paragraph has a good hook that grabs the reader’s attention, states the main topics of the essay, and introduces the main points of each body paragraph.

Work Approaches Expectations if:

• The writer establishes a controlling idea with a general purpose
• The controlling idea addresses only part of the task prompt
• The introductory paragraph has a hook that is weak
• The introductory paragraph may not contain the main points that will be discussed in the body paragraphs

Work Needs Improvement if:

• The writer attempts to establish a controlling idea but lacks a clear purpose.
• The controlling idea does not address the task prompt
• The introductory paragraph lacks a hook and does not present the ideas that will be discussed in the body paragraphs

Instructional Strategies

Assign partners prior to facilitating this lesson. Provide each student with a copy of the Controlling Idea handout.

Controlling idea:

You are going to establish your controlling idea (AKA thesis). We will be using the Controlling Idea handout for this task. Independently read the top portion of the handout that defines and gives examples of controlling ideas. As you read, circle words and phrases that are important to understanding what a controlling idea is. (5 minutes)

With a partner, compare the words that you circled and explain your reasoning behind your choices. Together, discuss why each of the examples is a good controlling idea. Also discuss how the examples could be stronger. (10 minutes)

Independently and using your notes and annotations from the texts you previously read, practice writing the controlling idea for your essay at least twice. (10-20 minutes)

Exchange controlling ideas with your partner and use the Controlling Idea Feedback form to provide feedback to each other, making sure to respond to each question on the form. Sign the bottom of the form and give the completed form to your partner. (10 minutes)

Take the time to read the feedback from your partner. Using his or her feedback, revise your controlling idea. (10-20 minutes)

Additional support: Students may require you to come up with a class definition of controlling idea along with a list of requirements.  They may also need a few additional examples/ non examples, or for you to think aloud as you develop your own controlling idea.  This will provide additional support to students who might struggle to write their own controlling idea.   Preferential peer partnering is also an option.

Introductory paragraph:

Independently read the information about introductory paragraphs. As you read, circle words and phrases that are important to remember when writing introductory paragraphs. (5 minutes)

With a partner, compare the words that you circled and explain your reasoning behind your choices. Together, discuss why each of the example is a good introductory paragraph. Also discuss how the example could be stronger. (10 minutes)

Independently and using your controlling idea and notes and annotations from your readings, use the organizer to write a draft of your introductory paragraph. (20-30 minutes)

Additional support: Students may require you to come up with a class definition of introduction paragraph along with a list of requirements. They may also need a few additional examples/ non examples, or for you to think aloud as you develop your own introductory paragraph. This will provide additional support to students who might struggle to write their own introduction. Preferential peer partnering is also an option.

Attachments

Student handouts.

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Teacher Resources

Student work samples.

Writing the Perfect Controlling Idea for Film and TV: The ULTIMATE Guide

Writing the Perfect Controlling Idea for Film and TV: The Ultimate Guide

A controlling idea is a foundation. Writing a screenplay is a lot like building a house. It is done piece by piece, each step builds upon another, and the final project must be structurally sound to last.

Also, just like a house, your screenplay needs a strong foundation before any other step can truly be complete.

This is where a controlling idea comes in.

Developing a tight and original controlling idea is an essential part of the writing process . For something so simple and short, it does a lot of the heavy work defining and guiding your story’s central focus.

Without it in mind, it’s all too easy for your script to become ineffective and aimless.

With that all said though, defining a controlling idea, knowing how best to use it, and figuring out how to write a great one is easier said than done. Read on to discover some of our essential tips.

Defining the Controlling Idea

Firstly, what is a controlling idea?

the controlling idea is a one-sentence statement of the story’s ultimate meaning expressed through the action and aesthetic emotion of the last act’s climax .

More specifically, a controlling idea:

• Is the main takeaway from the film or show, expressed through the action and aesthetic emotion of the last act’s climax.
• Encompasses the how and why of the change that takes place throughout the story.
• Essentially declares your ending from the very beginning and helps inform the steps you need to get there.
• This identifies the positive or negative charge of the story’s critical value at the last act’s climax. It also identifies the chief reason that this value has changed to its final state.
• Value and cause together expresses the core meaning of the story

Note:  ‘Premise’ and ‘controlling idea’ are not completely interchangeable. While they are very closely related, premise deals heavier with “physical situations” while controlling idea deals more with thematic ones.

Starting at the End

One of the best and easiest ways to determine your controlling idea is to work backwards from your story’s end goal.

When doing this, it’s best to ask yourself “What do I want the end takeaway to be?”

You will need to take into consideration:

• What are you wanting to do practically? What’s going to happen in the setting, to the characters, etc?
• What do you want to do thematically? Is this a movie/show about family, love, violence, trust, fear, or something else?
• Do you want an overall message that is positive, negative, or neutral?
• Are you wanting the message to be painfully obvious, vague, or somewhere in between?
• What do characters learn from or add to the ending?
• How do you want the takeaway to be communicated with the audience?

Asking all of these questions will steer your end message in a certain direction and in turn, make figuring out the value of your project all the easier.

Go Big with the Value

Now that you have a general direction for where you need to go, you need to determine the value of your story. What’s the value? In simplified terms…

the value of your controlling idea is the primary positive or negative shift that occurs by the end of your story.

When deciding on this value, go big or go home. We are not looking for a small-scale claim, nor are we looking for an action-based or generally weak one either. Rather, you need your value to be a big, universal claim that will speak to the human experience.

A good starting point when formulating this is, of course, considering your movie or television show’s theme .

What exactly are you dealing with?

• Does your show or movie revolve around justice or injustice or perhaps are you more focused on love and hate?
• Are you exploring the concepts of greed and selflessness or change and stagnation?
• Are you exploring the role of family, relationships, pain, happiness, or the search for meaning?

Or maybe you’re looking at something else entirely. Either way, starting with large emotional themes sets you up on the right path. Then, all you need to do is determine what you want to say about this large emotional theme .

At the end of the day, what do you want the audience to take away or reflect on?

• Does justice or injustice prevail?
• Does love conquer all or not?
• Are our differences good or bad?

All of these are potentially great starting points that you could consider.

Finding the Why

Once you have your value, you still have the important job of figuring out the other half of your controlling idea: the cause.

The cause is basically the ‘how’ or ‘why’ behind your value . It essentially takes care of the practical reasons behind your claim and is crucial for your controlling idea.

Just a value and no cause is like a thesis statement with no evidence. As such, it’s important to give a compelling reason why your value/claim happens.

If you’ve already gone into your project with a cause in mind, this step should be easy. However, if you have not, there’s a kind of rule of thumb you can follow to acquire a good one. Often, a cause can be broken down into a few main types including:

• Cause of Character: Where a cause occurs due to the actions of a protagonist against an antagonizing force
• Traditional Cause/Effect: Where a cause logically follows the value.
• Value-Based: Where a cause occurs because it is seen as more morally superior or more natural than the antagonizing force (Eg. Love wins because love is stronger than hate).

While these are certainly not the only types you can use, they’re a great starting point if you’re stuck!

Regardless of what type you choose, always make sure it is a compelling cause that makes sense for your story and for your audience.

Don’t Over-Complicate

At the end of the day, your controlling idea should feel big and important, but it should also feel effortless and relatable. Don’t strain too hard to make something overly intellectual or complex!

The closer you can get to simple truths or experiences, the better. Why? Because the audience can always appreciate a message that gets to who we are as people.

• This is why messages about love, meaning, connection, and fear are always huge hits. They are timeless, relatable, and meaningful.

Your audience is looking for that. Even if they’re watching your movie or show mainly for entertainment, everyone always loves a good moral of the story they can put to use.

Additionally, an over-complicated controlling idea can put a real damper on your writing!

Remember, it is the foundation for everything else that is coming. If your foundation is unwieldy and too ambitious, then everything you build on top of it will be as well. Eventually, the Jenga tower always starts to lean if the base is off-kilter.

Even if your controlling idea is good, if it has too many moving parts, it will still make writing your script rather difficult.

You don’t want to constantly feel like you need to “live up” to your message. It will either overwhelm and paralyze you from actually writing or it will make your film feel disingenuous.

Controlling Idea Examples

Still unsure about writing your own controlling idea? Here are some great examples of outstanding controlling ideas.

Sometimes the best way to learn is by observing!

Thought of another film or show with a great controlling idea? Comment below on any other movies/shows and their controlling ideas you think should be added to the list!

• Se7en and Chinatown : “Injustice prevails because the antagonist is overwhelmingly ruthless and powerful”
• The Godfather : “A systemization of corruption yields a diminishing sense of guilt” OR “Family is sacred”
• Dirty Harry : “Justice triumphs because the protagonist is more violent than the criminals.”
• Columbo : “Justice is restored because the protagonist is cleverer than the criminal.”
• Death Wish : “Justice triumphs when citizens take the law into their own hands and kill the people who need killing.”
• In The Heat of the Night : “Justice is restored because a perceptive black outsider sees the truth of white perversion.”
• Groundhog Day : “Happiness fills our lives when we learn to love unconditionally.”
• Dangerous Liaisons : “Hatred destroys us when we fear the opposite sex.”
• What did you think of this article?  Share it ,  Like it , give it a rating, and let us know your thoughts in the comments box further down…
• Struggling with a script? Story analysis is what we do, all day, every day…check out or range of services for writers & filmmakers  here .

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3 thoughts on “Writing the Perfect Controlling Idea for Film and TV: The ULTIMATE Guide”

Nicely worded statement. Essential for any good story.

Thanks Peter!

Is my outline in the best order—chronological order, spatial order, or order of importance—for me to present my main points? Will this order help me get my main point across?

Leave a Comment Cancel reply

Single Controlling Idea that Ties Back to the Thesis Statement

The first thing a solid body paragraph needs to do is focus on one controlling idea, one that directly ties back to the thesis statement of the paper. While the basic paragraph only requires a controlling idea specific to that paragraph’s content, any body paragraph in an essay must always take into account what the thesis statement (or controlling idea of the essay) is. It must also take into account what role the controlling idea of that specific paragraph will play within its context.

To illustrate, let’s look at an example prompt question:

Based on that prompt, a potential thesis statement could be the following:

This thesis statement only mentions one thing the writer can do to overcome a specific thinking error (that of giving up). The writer suggests paying more attention to the circumstances in which the thinking error tends to occur. This means that the writer will only need one body paragraph to explain this step he or she intends to take. In other words, since the thesis statement, or controlling idea of the whole essay, only has one idea in it, the essay only needs one body paragraph to discuss that one idea.

Not all essay prompts are that simple though. In the future, it is very likely that you will be asked a prompt question that will require you to share two or even three ideas instead of just the one. This would mean you would need more than one body paragraph to answer the prompt question. Look at the following example:

Ponder and Record

How might the controlling idea of this body paragraph (or even the number of body paragraphs) be different if the thesis statement were the following instead:

Three things I could do to overcome the thinking error of giving up would be to pay more attention to the conditions in which the thinking error tends to occur, act to immediately change my physical and mental state so I can stop the thinking error, and then consistently reflect and evaluate how successful I was in stopping the thinking error.

• How many controlling ideas are outlined in this thesis example?
• How many body paragraphs would this essay need since each body paragraph should contain no more than one controlling idea?

In the Ponder and Record exercise above, you probably deduced that the thesis statement outlines three controlling ideas. They are the following:

• Pay more attention to the conditions in which the thinking error occurs.
• Act immediately to change physical and mental state to stop the thinking error.
• Reflect and evaluate how successful efforts to stop the thinking error were.

This means that, according to this thesis, this particular essay would have three body paragraphs—one focused on each of the three controlling ideas.

Moving forward, as you examine your prompt questions and create thesis statements, allow the number of controlling ideas you outline to be your guide. This will help you determine how many body paragraphs you will have and what each of those body paragraphs will focus on.

Topic Sentence

The basic paragraph lessons teach that the purpose of the topic sentence is to indicate what controlling idea that paragraph is going to explore . With the body paragraph, the purpose of the topic sentence is no different.

As mentioned in the section above, the only thing that changes in the body paragraph is the fact that its controlling idea (the idea shared in the topic sentence of that paragraph) must tie back to the thesis statement of the paper. All while still serving its purpose of showing what the controlling idea of that particular paragraph will be.

Let’s return to our example thesis statement to illustrate this idea:

With this as the thesis statement of the introductory paragraph, the topic sentence of the body paragraph might be something like the following:

Notice how the topic sentence strengthens the thesis statement while also creating the controlling idea and supporting details for that body paragraph? It is clear that increased awareness of the conditions in which thinking errors occur will be the controlling idea of this paragraph (as illustrated by the thesis). But it is also clear that this controlling idea will be supported by details centered on the expert testimony (if the first topic sentence example is used) or with personal experience (if the second topic sentence example is used).

• How does the topic sentence above support the thesis while also clearly creating the controlling idea of that specific paragraph?
• How does the topic sentence effectively outline the type of supporting details that will be shared in that body paragraph?

Supporting Detail

You’ll remember from your lessons on the basic paragraph that there are four basic types of supporting details you could use to support the controlling idea of your paragraph:

• Expert testimony
• Personal experiences

The body paragraph is no different. The same types of supporting details will work. Much like with your basic paragraph assignment, your Basic Essay assignment also requires you to use supporting details in your body paragraph that directly support your controlling idea. The only difference is instead of integrating two supporting details, you only need to integrate one. If you are unsure of what that might look like, let’s return to our example topic sentences:

The first topic sentence example (Example 1) indicates that an expert testimony will serve as the supporting detail for the body paragraph. So what might this look like in practice?

• Many experts in the field of psychology have highlighted the importance of not only correctly identifying the thinking errors we suffer from, but also the conditions in which they tend to occur most frequently in our lives. As Dr. John M. Grohol explained in his article “10 Proven Methods for Fixing Cognitive Distortions,” “Much like a judge overseeing a trial, [you] must remove yourself from the emotionality of the episode of irrational thinking in order to examine the evidence more objectively. A thorough examination of an experience allows you to identify the basis for your distorted thoughts.” In other words, before a thinking error can be successfully overcome, it must first be analyzed as objectively as possible so the cause of the thinking error (and the conditions that tend to cause it) can be identified and modified.

The second topic sentence example (Example 2) indicates that a personal experience will serve as the supporting detail for the body paragraph. What might that look like in practice?

• Because one of my thinking errors is a tendency to want to give up and quit, I made the decision to actually keep a record of my thinking patterns over the course of a week. Anytime I had the thought to give up on a task, big or small, I would open up my notebook and write it down. I would describe what I was doing when the thought occurred and how it made me feel. By the end of the week, I realized that a lot of the time, my desire to give up happened during times of stress. In other words, I could handle a lot more (and avoid the thinking error of giving up) when I kept my stress level down. This discovery has helped me realize an important connection that I can now work toward resolving in order to lessen this thinking error’s impact on my life.
• How do the supporting detail examples above support the controlling idea established by the example topic sentence?
• What could your topic sentence and accompanying supporting details be for your own essay?

Don’t forget , if you choose to use a personal experience as a supporting detail, make sure it is based on a specific experience . It is not enough to reflect on a principle as it relates to your life in general.

The Concluding and the Transition Sentence

The final sentence of the body paragraph is the concluding and transition sentence. While similar to the simple concluding sentence of the basic paragraph, the concluding and transition sentence not only serves the purpose of providing closure for the controlling idea shared throughout the paragraph, but also the purpose of transitioning the reader to the next paragraph (whether it be another body paragraph or the concluding paragraph).

In the basic paragraph this sentence should not be a simple restatement of the topic sentence. Rather, it should be a brief summary of how the supporting details shared throughout the paragraph support the controlling idea of that paragraph. The same is true of the concluding and transition sentence in the body paragraph with this small addition—this sentence can also serve as a link back to the thesis statement (the controlling idea of the essay) as well.

Let’s return to our example to illustrate. Based on all of the example sentences shared in this lesson so far, the body paragraph for this particular essay prompt (with its topic sentence and supporting detail) might look like the following:

Based on the paragraph above, a possible concluding and transition sentence might be the following:

Notice how this sentence provides a sense of completion in terms of the controlling idea and supporting details shared throughout the paragraph? Do you also see how the sentence transitions the reader from the controlling idea of that paragraph back to the controlling idea—or thesis statement—of the entire essay?

• How could you avoid making your concluding and transition sentence a simple restatement of your topic sentence?
• What might your own concluding and transition sentence be based on the topic sentence and supporting details you plan to share?

Need More Help?

• Study other Writing Lessons in the Resource Center.
• Visit the Online Tutoring Resources in the Resource Center.
• Contact your Instructor.
• If you still need help, Schedule a Tutor .

Developing a Thesis Statement

Many papers you write require developing a thesis statement. In this section you’ll learn what a thesis statement is and how to write one.

Keep in mind that not all papers require thesis statements . If in doubt, please consult your instructor for assistance.

What is a thesis statement?

A thesis statement . . .

• Makes an argumentative assertion about a topic; it states the conclusions that you have reached about your topic.
• Makes a promise to the reader about the scope, purpose, and direction of your paper.
• Is focused and specific enough to be “proven” within the boundaries of your paper.
• Is generally located near the end of the introduction ; sometimes, in a long paper, the thesis will be expressed in several sentences or in an entire paragraph.
• Identifies the relationships between the pieces of evidence that you are using to support your argument.

Not all papers require thesis statements! Ask your instructor if you’re in doubt whether you need one.

Identify a topic

Your topic is the subject about which you will write. Your assignment may suggest several ways of looking at a topic; or it may name a fairly general concept that you will explore or analyze in your paper.

Consider what your assignment asks you to do

Inform yourself about your topic, focus on one aspect of your topic, ask yourself whether your topic is worthy of your efforts, generate a topic from an assignment.

Below are some possible topics based on sample assignments.

Sample assignment 1

Analyze Spain’s neutrality in World War II.

Identified topic

Franco’s role in the diplomatic relationships between the Allies and the Axis

This topic avoids generalities such as “Spain” and “World War II,” addressing instead on Franco’s role (a specific aspect of “Spain”) and the diplomatic relations between the Allies and Axis (a specific aspect of World War II).

Sample assignment 2

Analyze one of Homer’s epic similes in the Iliad.

The relationship between the portrayal of warfare and the epic simile about Simoisius at 4.547-64.

This topic focuses on a single simile and relates it to a single aspect of the Iliad ( warfare being a major theme in that work).

Developing a Thesis Statement–Additional information

Your assignment may suggest several ways of looking at a topic, or it may name a fairly general concept that you will explore or analyze in your paper. You’ll want to read your assignment carefully, looking for key terms that you can use to focus your topic.

Sample assignment: Analyze Spain’s neutrality in World War II Key terms: analyze, Spain’s neutrality, World War II

After you’ve identified the key words in your topic, the next step is to read about them in several sources, or generate as much information as possible through an analysis of your topic. Obviously, the more material or knowledge you have, the more possibilities will be available for a strong argument. For the sample assignment above, you’ll want to look at books and articles on World War II in general, and Spain’s neutrality in particular.

As you consider your options, you must decide to focus on one aspect of your topic. This means that you cannot include everything you’ve learned about your topic, nor should you go off in several directions. If you end up covering too many different aspects of a topic, your paper will sprawl and be unconvincing in its argument, and it most likely will not fulfull the assignment requirements.

For the sample assignment above, both Spain’s neutrality and World War II are topics far too broad to explore in a paper. You may instead decide to focus on Franco’s role in the diplomatic relationships between the Allies and the Axis , which narrows down what aspects of Spain’s neutrality and World War II you want to discuss, as well as establishes a specific link between those two aspects.

Before you go too far, however, ask yourself whether your topic is worthy of your efforts. Try to avoid topics that already have too much written about them (i.e., “eating disorders and body image among adolescent women”) or that simply are not important (i.e. “why I like ice cream”). These topics may lead to a thesis that is either dry fact or a weird claim that cannot be supported. A good thesis falls somewhere between the two extremes. To arrive at this point, ask yourself what is new, interesting, contestable, or controversial about your topic.

As you work on your thesis, remember to keep the rest of your paper in mind at all times . Sometimes your thesis needs to evolve as you develop new insights, find new evidence, or take a different approach to your topic.

Derive a main point from topic

Once you have a topic, you will have to decide what the main point of your paper will be. This point, the “controlling idea,” becomes the core of your argument (thesis statement) and it is the unifying idea to which you will relate all your sub-theses. You can then turn this “controlling idea” into a purpose statement about what you intend to do in your paper.

Look for patterns in your evidence

Compose a purpose statement.

Consult the examples below for suggestions on how to look for patterns in your evidence and construct a purpose statement.

• Franco first tried to negotiate with the Axis
• Franco turned to the Allies when he couldn’t get some concessions that he wanted from the Axis

Possible conclusion:

Spain’s neutrality in WWII occurred for an entirely personal reason: Franco’s desire to preserve his own (and Spain’s) power.

Purpose statement

This paper will analyze Franco’s diplomacy during World War II to see how it contributed to Spain’s neutrality.

• The simile compares Simoisius to a tree, which is a peaceful, natural image.
• The tree in the simile is chopped down to make wheels for a chariot, which is an object used in warfare.

At first, the simile seems to take the reader away from the world of warfare, but we end up back in that world by the end.

This paper will analyze the way the simile about Simoisius at 4.547-64 moves in and out of the world of warfare.

Derive purpose statement from topic

To find out what your “controlling idea” is, you have to examine and evaluate your evidence . As you consider your evidence, you may notice patterns emerging, data repeated in more than one source, or facts that favor one view more than another. These patterns or data may then lead you to some conclusions about your topic and suggest that you can successfully argue for one idea better than another.

For instance, you might find out that Franco first tried to negotiate with the Axis, but when he couldn’t get some concessions that he wanted from them, he turned to the Allies. As you read more about Franco’s decisions, you may conclude that Spain’s neutrality in WWII occurred for an entirely personal reason: his desire to preserve his own (and Spain’s) power. Based on this conclusion, you can then write a trial thesis statement to help you decide what material belongs in your paper.

Sometimes you won’t be able to find a focus or identify your “spin” or specific argument immediately. Like some writers, you might begin with a purpose statement just to get yourself going. A purpose statement is one or more sentences that announce your topic and indicate the structure of the paper but do not state the conclusions you have drawn . Thus, you might begin with something like this:

• This paper will look at modern language to see if it reflects male dominance or female oppression.
• I plan to analyze anger and derision in offensive language to see if they represent a challenge of society’s authority.

At some point, you can turn a purpose statement into a thesis statement. As you think and write about your topic, you can restrict, clarify, and refine your argument, crafting your thesis statement to reflect your thinking.

As you work on your thesis, remember to keep the rest of your paper in mind at all times. Sometimes your thesis needs to evolve as you develop new insights, find new evidence, or take a different approach to your topic.

Compose a draft thesis statement

If you are writing a paper that will have an argumentative thesis and are having trouble getting started, the techniques in the table below may help you develop a temporary or “working” thesis statement.

Begin with a purpose statement that you will later turn into a thesis statement.

Assignment: Discuss the history of the Reform Party and explain its influence on the 1990 presidential and Congressional election.

Purpose Statement: This paper briefly sketches the history of the grassroots, conservative, Perot-led Reform Party and analyzes how it influenced the economic and social ideologies of the two mainstream parties.

Question-to-Assertion

If your assignment asks a specific question(s), turn the question(s) into an assertion and give reasons why it is true or reasons for your opinion.

Assignment : What do Aylmer and Rappaccini have to be proud of? Why aren’t they satisfied with these things? How does pride, as demonstrated in “The Birthmark” and “Rappaccini’s Daughter,” lead to unexpected problems?

Beginning thesis statement: Alymer and Rappaccinni are proud of their great knowledge; however, they are also very greedy and are driven to use their knowledge to alter some aspect of nature as a test of their ability. Evil results when they try to “play God.”

Write a sentence that summarizes the main idea of the essay you plan to write.

Main idea: The reason some toys succeed in the market is that they appeal to the consumers’ sense of the ridiculous and their basic desire to laugh at themselves.

Make a list of the ideas that you want to include; consider the ideas and try to group them.

• nature = peaceful
• war matériel = violent (competes with 1?)
• need for time and space to mourn the dead
• war is inescapable (competes with 3?)

Use a formula to arrive at a working thesis statement (you will revise this later).

• although most readers of _______ have argued that _______, closer examination shows that _______.
• _______ uses _______ and _____ to prove that ________.
• phenomenon x is a result of the combination of __________, __________, and _________.

What to keep in mind as you draft an initial thesis statement

Beginning statements obtained through the methods illustrated above can serve as a framework for planning or drafting your paper, but remember they’re not yet the specific, argumentative thesis you want for the final version of your paper. In fact, in its first stages, a thesis statement usually is ill-formed or rough and serves only as a planning tool.

As you write, you may discover evidence that does not fit your temporary or “working” thesis. Or you may reach deeper insights about your topic as you do more research, and you will find that your thesis statement has to be more complicated to match the evidence that you want to use.

You must be willing to reject or omit some evidence in order to keep your paper cohesive and your reader focused. Or you may have to revise your thesis to match the evidence and insights that you want to discuss. Read your draft carefully, noting the conclusions you have drawn and the major ideas which support or prove those conclusions. These will be the elements of your final thesis statement.

Sometimes you will not be able to identify these elements in your early drafts, but as you consider how your argument is developing and how your evidence supports your main idea, ask yourself, “ What is the main point that I want to prove/discuss? ” and “ How will I convince the reader that this is true? ” When you can answer these questions, then you can begin to refine the thesis statement.

Refine and polish the thesis statement

To get to your final thesis, you’ll need to refine your draft thesis so that it’s specific and arguable.

• Ask if your draft thesis addresses the assignment
• Question each part of your draft thesis
• Clarify vague phrases and assertions
• Investigate alternatives to your draft thesis

Consult the example below for suggestions on how to refine your draft thesis statement.

Sample Assignment

Choose an activity and define it as a symbol of American culture. Your essay should cause the reader to think critically about the society which produces and enjoys that activity.

• Ask The phenomenon of drive-in facilities is an interesting symbol of american culture, and these facilities demonstrate significant characteristics of our society.This statement does not fulfill the assignment because it does not require the reader to think critically about society.

Drive-ins are an interesting symbol of American culture because they represent Americans’ significant creativity and business ingenuity.

Among the types of drive-in facilities familiar during the twentieth century, drive-in movie theaters best represent American creativity, not merely because they were the forerunner of later drive-ins and drive-throughs, but because of their impact on our culture: they changed our relationship to the automobile, changed the way people experienced movies, and changed movie-going into a family activity.

While drive-in facilities such as those at fast-food establishments, banks, pharmacies, and dry cleaners symbolize America’s economic ingenuity, they also have affected our personal standards.

While drive-in facilities such as those at fast- food restaurants, banks, pharmacies, and dry cleaners symbolize (1) Americans’ business ingenuity, they also have contributed (2) to an increasing homogenization of our culture, (3) a willingness to depersonalize relationships with others, and (4) a tendency to sacrifice quality for convenience.

This statement is now specific and fulfills all parts of the assignment. This version, like any good thesis, is not self-evident; its points, 1-4, will have to be proven with evidence in the body of the paper. The numbers in this statement indicate the order in which the points will be presented. Depending on the length of the paper, there could be one paragraph for each numbered item or there could be blocks of paragraph for even pages for each one.

Complete the final thesis statement

The bottom line.

As you move through the process of crafting a thesis, you’ll need to remember four things:

• Context matters! Think about your course materials and lectures. Try to relate your thesis to the ideas your instructor is discussing.
• As you go through the process described in this section, always keep your assignment in mind . You will be more successful when your thesis (and paper) responds to the assignment than if it argues a semi-related idea.
• Your thesis statement should be precise, focused, and contestable ; it should predict the sub-theses or blocks of information that you will use to prove your argument.
• Make sure that you keep the rest of your paper in mind at all times. Change your thesis as your paper evolves, because you do not want your thesis to promise more than your paper actually delivers.

In the beginning, the thesis statement was a tool to help you sharpen your focus, limit material and establish the paper’s purpose. When your paper is finished, however, the thesis statement becomes a tool for your reader. It tells the reader what you have learned about your topic and what evidence led you to your conclusion. It keeps the reader on track–well able to understand and appreciate your argument.

Writing Process and Structure

This is an accordion element with a series of buttons that open and close related content panels.

Getting Started with Your Paper

Interpreting Writing Assignments from Your Courses

Generating Ideas for

Creating an Argument

Thesis vs. Purpose Statements

Architecture of Arguments

Working with Sources

Quoting and Paraphrasing Sources

Using Literary Quotations

Citing Sources in Your Paper

Drafting Your Paper

Generating Ideas for Your Paper

Introductions

Paragraphing

Developing Strategic Transitions

Conclusions

Revising Your Paper

Peer Reviews

Reverse Outlines

Revising an Argumentative Paper

Revision Strategies for Longer Projects

Finishing Your Paper

Twelve Common Errors: An Editing Checklist

How to Proofread your Paper

Writing Collaboratively

Collaborative and Group Writing

Paragraph Development

Writers use words to compose sentences that develop ideas. A group of related sentences that develops a particular idea is organized in a unit called a paragraph. Understanding the basic concept of “paragraph” is easy enough, but applying that understanding—that is, writing strong, focused paragraphs—can pose challenges for writers of all levels of accomplishment. The discussion that follows will help you understand effective paragraphing and reinforce good writing habits. Keep in mind that writing is a process, and producing good writing, paragraph by paragraph, takes time. Learning to write effective paragraphs will help you communicate ideas clearly to an audience and help you achieve the purpose of the writing.

THE PURPOSE OF THE PARAGRAPH

Paragraphs are the basic units of a piece of writing. Whether informative, persuasive, expository/explanatory, or another mode of writing, paragraphs express the beginning, middle, and end of a discussion in the form of an introduction, body, and conclusion. Each of these parts can be one or more paragraphs long, and the paragraphs in each part have a different purpose. The focus of this tutorial is on body paragraphs. The purpose of body paragraphs is twofold: 1) body paragraphs work together to develop a discussion about a topic within the scope of the thesis or main idea about that topic, and 2) each body paragraph works individually to develop one point of the discussion with supporting details and language that connects the paragraph to the rest of the paper.

THE QUALITIES OF AN EFFECTIVE PARAGRAPH

Unity, Coherence, and Development

An effective paragraph will have unity, coherence, and development. Unity means that each sentence provides information that relates to the established focus of the paragraph. Coherence means each sentence logically leads to the next sentence, and the writer has provided transitions and guidewords to make the movement fluid for the reader and the different ideas come together cohesively. Lastly, development refers to sustaining and building the discussion by providing enough supporting details that the point of the paragraph is clearly communicated to an audience. While paragraph length can vary, effective paragraphs contain enough substantive content that readers do not have lingering questions.

Example Paragraph

One major contributor to the opioid epidemic has been the aggressive marketing of prescription painkillers by pharmaceutical manufacturers. Perez-Pena (2017) concluded that while the healthcare industry was attempting to effectively and efficiently treat patients with chronic pain, pharmaceutical companies were providing funding to prominent doctors, medical societies, and patient advocacy groups in order to win support for a particular drug’s adoption and usage. In fact, pharmaceutical companies continue to spend millions on promotional activities and materials that deny or trivialize any risks of opioid use while at the same time overstating each drug’s benefit (Perez-Pina, 2017). Although aggressive marketing by pharmaceutical companies has played a large role in opioid addiction, patients also play a role in the problem when they take advantage of holes in the healthcare provider system in order to remedy their addiction.

Perez-Pina, R. (2017, May 31). Ohio sues drug makers, saying they aided opioid epidemic. The New York Times . https://www.nytimes.com/2017/05/31/us/ohio-sues-pharmaceuticaldrug-opioid-epidemic-mike-dewine.html?_r=1

The example paragraph is unified on one topic: the opioid epidemic. It is cohesive; the ideas move from fact to evidence to example and include guiding words such as “one,” “while,” “in order to,” “in fact,” and “although,” which lead the reader from one sentence to the next. The paragraph is well-developed as it sustains discussion on the opioid epidemic and builds it with a new point about a contributing factor, which is presented with evidence from research and supporting details. It also uses language (e.g. “although”) that connects the paragraph topic, the role that pharmaceutical companies play, to the topic that will be discussed in the next paragraph, the role that patients play.

CONSIDERATIONS FOR WRITING AN EFFECTIVE PARAGRAPH

Limit the Focus to One Distinct Idea

The sentences in a paragraph work together to develop one distinct idea by sharing the same focus. One way that writers establish this focus is with a topic sentence at the beginning of the paragraph. The topic sentence not only expresses the topic of discussion for the paragraph but also asserts a controlling idea that limits the focus of that topic. To create this limited focus, writers provide facts, opinions, definitions, examples, anecdotes, and descriptions, for example, support or explain the controlling idea.

Develop Paragraphs With the Audience and Purpose in Mind

The information given in the paragraph will also depend on the audience and purpose of the writing. To develop a paragraph with the audience in mind, the writer needs to consider what the audience already knows. Discussions are generally developed by adding new information to known information. The same topic would be discussed differently to an audience that does not know anything about the topic versus an audience who are already very familiar with it. The writer must also consider the purpose of the writing. An informative paragraph, for example, seeks to enlighten or educate the reader about the topic whereas a persuasive paragraph seeks to change the reader’s mind or behavior through the discussion of the topic.

Critics have argued that technology will dehumanize education; in fact, technology can actually personalize education. For example, once a print textbook is adopted, schools will stay with the curriculum until the next textbook adoption cycle. However, as Minnesota’s Byron Independent School District (ISD) realized when they designed their own online curriculum, teachers can adapt an online curriculum as needed to individually personalize a student’s educational experience. For example, Byron’s teachers made real-time adjustments to a particular math unit if a particular student was struggling to master an intended learning objective (Fulton, 2013). The Byron ISD experiment suggested technology, combined with a thoughtful pedagogy, can have a lasting, personal and positive impact on student learning.

Fulton, K. (2013, September 1). Byron’s flipped classrooms. Education Digest , 79(1), 22-26. https://search.proquest.com/openview/49d7ee537168e132960671e4bef70582/1.pdf?pqorigsite=gscholar&cbl=25066

The example paragraph is limited in focus on one idea about the topic—that technology provides opportunities to personalize education. Each sentence works to support this idea in the form of facts, examples, and anecdotes. The paragraph is also tailored to a specific audience and purpose. The writer begins with an opposing viewpoint to appeal to readers who may be critical of educational technology. The purpose of this paragraph is to persuade, so by presenting the opposing viewpoint then counterarguing it with research-based examples, the reader is more likely to see the writer’s viewpoint as logical and change their own opinion about the topic.

Use Various Rhetorical Modes for Developing and Organizing Paragraphs

Rhetorical modes refer to the patterns of development available to the writer. In other words, modes are the particular manner in which writers develop their thoughts, and quite typically the mode comes to us naturally depending on what we are trying to accomplish. If someone is talking to an auto mechanic about a problem with their car, they are describing. If a person is telling a story about their seven-year-old daughter, they are narrating. If one is talking about the types of books they like to read, they use examples. Whatever a person is trying to convey, they will do so with one or more patterns of development or rhetorical modes.

Types of modes include description, narration, comparison and contrast, example, definition, cause and effect, analogy, and analysis. Usually, the focus of the paragraph lends itself to the use of one primary mode, but even so, most paragraphs utilize more than one pattern of development. For example, if a student is taking a United States history course, they may be asked to compare and contrast the South before and after the Civil War. While the predominant rhetorical mode used in paragraphs will be comparison and contrast, the student will also probably use examples, include description, and offer analysis as you compare the old South to the new South.

Rhetorical modes help writers think about their topic and organize their ideas. These rhetorical modes also show writers the options available to them when composing paragraphs.

When to Begin a New Paragraph

Paragraph length is dictated first by content and purpose. A new paragraph signals a pause in thought and a change in topic, directing readers to anticipate what is to follow or allowing them a moment to digest the material in the preceding paragraph. Reasons to begin a new paragraph include

• beginning a new idea,
• emphasizing a particular point,
• changing speakers in dialogue,
• allowing readers to pause, and
• breaking up lengthy text, usually moving to a subtopic.

Transitions and Signal Words

A paragraph needs to be developed in a logical manner, and readers need to be guided through that development. Writers need to help readers by using transitional expressions and other appropriate words to guide them through the development of the paragraph. Transitional expressions function like glue—they hold a piece of writing together and give it order.

Paragraph Length

Long paragraphs of as much as a page or more often lack a well-defined focus. They do not allow readers an opportunity to assimilate one point before another is made. Long paragraphs can be divided and reorganized into two or more focused paragraphs.

By contrast, short paragraphs can seem choppy and undeveloped. They often leave the reader craving more information. The writer must think carefully of the needs of their audience and the purpose for the writing, and develop each point accordingly. For example, a paper with a persuasive purpose, written for an audience that does not share the writer’s view may need more development in each paragraph in order to present a convincing case. Depending on the audience and purpose, a writer may need to include more or less information. Ideally, paragraph lengths should invite readers in, neither seeming too daunting to read through nor appearing incomplete.

PIE METHOD OF PARAGRAPH DEVELOPMENT

One good way to go about developing paragraphs is to use the PIE method: The writer makes a strong point as expressed in the topic sentence; illustrates the point with supporting details and evidence; then explains how the evidence supports the point of the paragraph and relates to the thesis. The bold and italic formatting in the following example shows the PIE method at work:

P – Point

I – Illustrate

E – Explain

Despite preservation efforts, barns are in jeopardy, a reflection not only of economics but also of the fading family farm. To make matters worse, razing an old barn is often easier than saving it. Many people who own an unused barn are reluctant to spend money on keeping the building standing, and if the barn is already in rough shape, they usually neglect it until it falls down or is taken down. Preservationists say that in the majority of cases, ailing barns simply need to be stabilized by replacing the sills around the perimeter of the structure. But even this is too costly for a structure that barn owners consider functionally obsolete. Despite using them as big garages, barns tend to be taken down rather than repaired. Even carpenters who make a livelihood in construction lack the skills and equipment required for barn preservation.

Take-Aways for Writing an Effective Paragraph

• Focus limited to one distinct idea
• Paragraphs developed with audience and purpose in mind
• Various rhetorical modes considered for developing and organizing paragraphs
• Transitions and guidewords connecting parts
• Content developed and organized by PIE

When Revising Paragraphs, Consider the Following Questions

• What is the topic and controlling idea?
• What should readers understand after reading the paragraph?
• Is the topic sentence clear and limited in focus?
• Are all of the supporting details unified on the controlling idea?
• Will readers understand the relationship of the supporting details to the point of the paragraph and the larger point of the essay?
• Is the content organized in a logical, easy-to-understand manner?
• Is the development sufficient for the audience and purpose?
• Does anything need to be added or deleted?

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Topic Sentence

Every paragraph should include a topic sentence that identifies the main idea of the paragraph. A topic sentence also states the point the writer wishes to make about that subject. Generally, the topic sentence appears at the beginning of the paragraph. It is often the paragraph’s very first sentence. A paragraph’s topic sentence must be general enough to express the paragraph’s overall subject. However, it should be specific enough that the reader can understand the paragraph’s main subject and point.

• The topic sentence should identify the main idea and point of the paragraph. To choose an appropriate topic sentence, read the paragraph and think about its main idea and point.
• The supporting details in the paragraph (the sentences other than the topic sentence) will develop or explain the topic sentence. Read all the supporting details in the paragraph and think about the ideas they discuss.
• The topic sentence should not be too general or too specific. When considering the options, look for a topic sentence that is general enough to show the paragraph’s main idea instead of just one of its details. The answer should be specific enough that the reader understands the main idea of the paragraph.

More About the Topic Sentence

A topic sentence is the most important sentence in a paragraph. Sometimes referred to as a focus sentence, the topic sentence helps organize the paragraph by summarizing the information in the paragraph. In academic writing, the topic sentence is usually the first sentence in a paragraph (although it does not have to be).

Purpose of the Topic Sentence

A topic sentence essentially tells readers about the rest of the paragraph. All sentences after it have to give more information about that sentence, prove it by offering facts about it, or describe it in more detail. For example, if the topic sentence concerns the types of endangered species that live in the ocean, then every sentence after that needs to expands on that subject.

Topic sentences also need to relate back to the thesis of the essay. The thesis statement is like a road map that will tell the reader or listener where you are going with this information or how you are treating it.

Topic Sentences and Controlling Ideas

Every topic sentence will have a topic and a controlling idea. The controlling idea shows the direction the paragraph will take.

Examples of a Topic Sentence

Topic Sentence: There are many reasons why pollution in ABC Town is the worst in the world.

The topic is "pollution in ABC Town is the worst in the world" and the controlling idea is "many reasons."

Topic Sentence: To be an effective CEO requires certain characteristics.

The topic is "To be an effective CEO" and the controlling idea is "certain characteristics."

Topic Sentence: There are many possible contributing factors to global warming.

The topic is "global warming" and the controlling idea is "contributing factors."

Topic Sentence: Fortune hunters encounter many difficulties when exploring a shipwreck.

The topic is "exploring a shipwreck" and the controlling idea is "many difficulties."

Topic Sentence: Dogs make wonderful pets because they help you to live longer.

The topic is "dogs make wonderful pets" and the controlling idea is "because they help you

to live longer."

Topic Sentence: Crime in poverty-stricken areas occurs because of a systemic discrimination.

The topic is "crime in poverty stricken areas" and the controlling idea is "systemic discrimination."

Topic Sentence: Teen pregnancy may be prevented by improved education.

The topic is "teen pregnancy may be prevented" and the controlling idea is "improved education."

Topic Sentence: Cooking requires a number of different skills.

The topic is "cooking" and the controlling idea is "many different skills."

Topic Sentence: It is important to be ready before buying a house.

The topic is "buying a house" and the controlling idea is “it is important to be ready."

Topic Sentence: Graduating from high school is important for many different reasons.

The topic is "graduating from high school" and the controlling idea is "many different reasons."

Topic Sentence: Having a first child is difficult because of the significant adjustments in your life.

The topic is "having a first child" and the controlling idea is "significant adjustments in your life."

Topic Sentence: Remodeling a kitchen successfully requires research and a good eye.

The topic is "remodeling a kitchen" and the controlling idea is "requires research and a good eye."

Topic Sentence Exercise

Write a topic sentence for the following paragraph. During the 1990s, I really enjoyed watching Friends on television every Thursday night. I really wanted Rachel’s haircut—I think every girl wanted Rachel’s haircut back then! Rachel’s haircut went really well with the Guess Jeans that were so popular in the 1990s. I remember all the advertisements for Guess and Calvin Klein Jeans that were in each month’s Sassy magazine. I do not think Sassy magazine exists anymore, but it was one of the most popular magazines for young women in the 1990s.

Topic Sentences Exercise Answer

The bold sentence is one possible topic sentence for the example paragraph.

Note: This is just one possible topic sentence—you may have thought of others that are also appropriate.

Thinking about the 1990s brings back fond memories for me about fashion and popular culture. During the 1990s, I really enjoyed watching Friends on television every Thursday night. I really wanted Rachel’s haircut—I think every girl wanted Rachel’s haircut back then! Rachel’s haircut went really well with the Guess Jeans that were so popular in the 1990s. I remember all the advertisements for Guess and Calvin Klein Jeans that were in each month’s Sassy magazine. I do not think Sassy magazine exists anymore, but it was one of the most popular magazines for young women in the 1990s.

*Source: Purdue OWL

Paragraph Structure - Controlling Ideas

Guided Practice

The following topic sentences have controlling ideas.

Click on the underlined segment of the topic sentence that contains the controlling idea.

Tennis racquets have changed greatly in the last ten years.

INCORRECT. TRY AGAIN.

CORRECT! The controlling idea is have changed greatly

People from many different cultures live in Boston.

CORRECT! The controlling idea is different cultures

Cats are better pets than dogs for many reasons.

CORRECT! The controlling idea is better pets than dogs

Yesterday was the worst day of my life.

CORRECT! The controlling idea is worst day of my life

Oral presentations make me very nervous.

CORRECT! The controlling idea is make me very nervous

The oldest child in the family is often the most independent.

CORRECT! The controlling idea is most independent

Tools for left-handed people are sometimes poorly designed.

CORRECT! The controlling idea is poorly designed

Wendy's now offers the most nutritious selection of all the fast food restaurants.

CORRECT! The controlling idea is most nutritious selection

Computer skills are a requirement for many office jobs.

CORRECT! The controlling idea is requirement for many office jobs

Hardwood flooring is a better buy than carpetng.

CORRECT! The controlling idea is better buy than carpeting

Return to Paragraph Structure

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Paragraphs & topic sentences.

A paragraph is a series of sentences that are organized and coherent, and are all related to a single topic. Almost every piece of writing you do that is longer than a few sentences should be organized into paragraphs. This is because paragraphs show a reader where the subdivisions of an essay begin and end, and thus help the reader see the organization of the essay and grasp its main points.

Paragraphs can contain many different kinds of information. A paragraph could contain a series of brief examples or a single long illustration of a general point. It might describe a place, character, or process; narrate a series of events; compare or contrast two or more things; classify items into categories; or describe causes and effects. Regardless of the kind of information they contain, all paragraphs share certain characteristics. One of the most important of these is a topic sentence.

TOPIC SENTENCES

A well-organized paragraph supports or develops a single controlling idea, which is expressed in a sentence called the topic sentence. A topic sentence has several important functions: it substantiates or supports an essay’s thesis statement; it unifies the content of a paragraph and directs the order of the sentences; and it advises the reader of the subject to be discussed and how the paragraph will discuss it. Readers generally look to the first few sentences in a paragraph to determine the subject and perspective of the paragraph. That’s why it’s often best to put the topic sentence at the very beginning of the paragraph. In some cases, however, it’s more effective to place another sentence before the topic sentence—for example, a sentence linking the current paragraph to the previous one, or one providing background information.

Although most paragraphs should have a topic sentence, there are a few situations when a paragraph might not need a topic sentence. For example, you might be able to omit a topic sentence in a paragraph that narrates a series of events, if a paragraph continues developing an idea that you introduced (with a topic sentence) in the previous paragraph, or if all the sentences and details in a paragraph clearly refer—perhaps indirectly—to a main point. The vast majority of your paragraphs, however, should have a topic sentence.

PARAGRAPH STRUCTURE

Most paragraphs in an essay have a three-part structure—introduction, body, and conclusion. You can see this structure in paragraphs whether they are narrating, describing, comparing, contrasting, or analyzing information. Each part of the paragraph plays an important role in communicating your meaning to your reader.

Introduction : the first section of a paragraph; should include the topic sentence and any other sentences at the beginning of the paragraph that give background information or provide a transition.

Body : follows the introduction; discusses the controlling idea, using facts, arguments, analysis, examples, and other information.

Conclusion : the final section; summarizes the connections between the information discussed in the body of the paragraph and the paragraph’s controlling idea.

The following paragraph illustrates this pattern of organization. In this paragraph the topic sentence and concluding sentence (CAPITALIZED) both help the reader keep the paragraph’s main point in mind.

SCIENTISTS HAVE LEARNED TO SUPPLEMENT THE SENSE OF SIGHT IN NUMEROUS WAYS. In front of the tiny pupil of the eye they put , on Mount Palomar, a great monocle 200 inches in diameter, and with it see 2000 times farther into the depths of space. Or they look through a small pair of lenses arranged as a microscope into a drop of water or blood, and magnify by as much as 2000 diameters the living creatures there, many of which are among man’s most dangerous enemies. Or , if we want to see distant happenings on earth, they use some of the previously wasted electromagnetic waves to carry television images which they re-create as light by whipping tiny crystals on a screen with electrons in a vacuum. Or they can bring happenings of long ago and far away as colored motion pictures, by arranging silver atoms and color-absorbing molecules to force light waves into the patterns of original reality. Or if we want to see into the center of a steel casting or the chest of an injured child, they send the information on a beam of penetrating short-wave X rays, and then convert it back into images we can see on a screen or photograph. THUS ALMOST EVERY TYPE OF ELECTROMAGNETIC RADIATION YET DISCOVERED HAS BEEN USED TO EXTEND OUR SENSE OF SIGHT IN SOME WAY. George Harrison, “Faith and the Scientist”

In a coherent paragraph, each sentence relates clearly to the topic sentence or controlling idea, but there is more to coherence than this. If a paragraph is coherent, each sentence flows smoothly into the next without obvious shifts or jumps. A coherent paragraph also highlights the ties between old information and new information to make the structure of ideas or arguments clear to the reader.

Along with the smooth flow of sentences, a paragraph’s coherence may also be related to its length. If you have written a very long paragraph, one that fills a double-spaced typed page, for example, you should check it carefully to see if it should start a new paragraph where the original paragraph wanders from its controlling idea. On the other hand, if a paragraph is very short (only one or two sentences, perhaps), you may need to develop its controlling idea more thoroughly, or combine it with another paragraph.

A number of other techniques that you can use to establish coherence in paragraphs are described below.

Repeat key words or phrases. Particularly in paragraphs in which you define or identify an important idea or theory, be consistent in how you refer to it. This consistency and repetition will bind the paragraph together and help your reader understand your definition or description.

Create parallel structures. Parallel structures are created by constructing two or more phrases or sentences that have the same grammatical structure and use the same parts of speech. By creating parallel structures you make your sentences clearer and easier to read. In addition, repeating a pattern in a series of consecutive sentences helps your reader see the connections between ideas. In the paragraph above about scientists and the sense of sight, several sentences in the body of the paragraph have been constructed in a parallel way. The parallel structures (which have been emphasized ) help the reader see that the paragraph is organized as a set of examples of a general statement.

Be consistent in point of view, verb tense, and number. Consistency in point of view, verb tense, and number is a subtle but important aspect of coherence. If you shift from the more personal "you" to the impersonal “one,” from past to present tense, or from “a man” to “they,” for example, you make your paragraph less coherent. Such inconsistencies can also confuse your reader and make your argument more difficult to follow.

Use transition words or phrases between sentences and between paragraphs. Transitional expressions emphasize the relationships between ideas, so they help readers follow your train of thought or see connections that they might otherwise miss or misunderstand. The following paragraph shows how carefully chosen transitions (CAPITALIZED) lead the reader smoothly from the introduction to the conclusion of the paragraph.

I don’t wish to deny that the flattened, minuscule head of the large-bodied "stegosaurus" houses little brain from our subjective, top-heavy perspective, BUT I do wish to assert that we should not expect more of the beast. FIRST OF ALL, large animals have relatively smaller brains than related, small animals. The correlation of brain size with body size among kindred animals (all reptiles, all mammals, FOR EXAMPLE) is remarkably regular. AS we move from small to large animals, from mice to elephants or small lizards to Komodo dragons, brain size increases, BUT not so fast as body size. IN OTHER WORDS, bodies grow faster than brains, AND large animals have low ratios of brain weight to body weight. IN FACT, brains grow only about two-thirds as fast as bodies. SINCE we have no reason to believe that large animals are consistently stupider than their smaller relatives, we must conclude that large animals require relatively less brain to do as well as smaller animals. IF we do not recognize this relationship, we are likely to underestimate the mental power of very large animals, dinosaurs in particular. Stephen Jay Gould, “Were Dinosaurs Dumb?”

SOME USEFUL TRANSITIONS

(modified from Diana Hacker, A Writer’s Reference )

Produced by Writing Tutorial Services, Indiana University, Bloomington, IN

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• Literary Terms

Topic Sentence

I. what is a topic sentence.

A topic sentence in a paragraph is like the GPS in a car. It shows you (and others) where you are going and explains the point of the paragraph. Everything else is used as supporting details. The topic sentence contains two parts: the topic and a controlling idea. The topic is WHAT the paragraph is going to be about, and the controlling idea explains WHY the paragraph is being written. The topic sentence helps your reader understand the purpose of your paragraph.

II. Examples of a Topic Sentence

The purpose of your paragraph will be made clear in your topic sentence. The most common reasons for writing are to persuade, to inform, and to entertain. It is also possible that a sentence could do more than one of these.

You will often use a persuasive topic sentence when writing for school, such as in literary essays .

The character Pip in the novel Great Expectations learns the importance of loyalty through his        interactions with the convict Abel Magwitch.

An informative topic sentence is often found in scientific articles.

White blood cells help fight infections by attacking bacteria, viruses and germs that invade the         body.

Topic sentences that entertain are sometimes found in magazines or other less formal writing.

It’s not hard to raise a bad child if you follow these simple instructions.

III. Parts of a Topic Sentence

There are just two parts in a topic sentence, the topic and the controlling idea. The topic is WHAT the paragraph is about, and the controlling idea explains WHY you are writing the paragraph. In the examples below, the topic is in orange and the controlling idea is in green .

Joseph loves to spend time with his friends .

What/who is this paragraph about? Joseph. Why is this paragraph being written? To explain something that Joseph loves to do.

Disneyland is the happiest place on Earth .

What/who is this paragraph about? Disneyland. Why is it being written? To show why Disneyland is the happiest place on Earth.

IV. Placement of Topic Sentences

A. initial placement.

The most common place for a topic sentence is at the beginning of the paragraph because it explains what the paragraph is going to discuss. The initial placement helps the writer organize the paragraph and tells the reader what to expect right in the beginning.

The best things in life are free . Although most people work hard to buy a good home or a nice car, those are not the things that they care about the most. At the end of their lives, they don’t want to hug their cars, or the walls of their fine houses. They want to be surrounded by the people they care about and who care about them. Kindness is free. Love is free. Friendship is free (or at least it should be!). Of course it is important to make money to survive, but love is important to live happily.

b. Final Placement

Sometimes the topic sentence is at the end of the paragraph, especially when the paragraph is a narrative or a mysterious story. Placing it at the end creates suspense or sometimes works to tell the point of the story.

The wealthy man was dying. He called for his friends and family to be near him and placed a hand on each one’s shoulder. They cried because they would miss him, and he cried because he had no more time to share with them. The beautiful things that he’d purchased over the years held no meaning. He didn’t care about his diamonds or his yacht or his large home. He cared for his children and the love they shared. They were here with him now and held his hands. He was glad he’d learned the most important lesson in life: the best things in life are free .

c. Medial Placement

The last place, the least common place for a topic sentence, is in the middle of the paragraph. The medial topic sentence usually functions as a transition between two ideas or details.  This works when you want to show that there are two (sometimes opposite) points to an issue, but the one you are arguing, the second point, is stronger, more specific, or more important. This topic sentence is generally introduced with a transition signal.

You can’t survive on love alone. People need money for basic necessities: food, shelter and clothing. Without money, life would be uncomfortable and difficult. However, time and energy should not be completely spent on making money because the best things in life are free . Having fun with friends and family is more important and more satisfying than buying a new car or nice clothes. People provide warmth, affection, understanding, and most of all, love. Money can’t love you back, and it does not guarantee happiness. Some of the richest people in the world are miserable, while some of the poorest people in the world are happy because they have the simple joy of loving people in their lives.  

V. How to Write a Topic Sentence

A. the best way to write your topic sentence is to consider why you are writing the paragraph.

• Decide on your reason for writing the paragraph
• After you have figured that out, write down the important details you want to include and see what they all have in common.
• Summarize the details into one sentence.

For example, if you want to write about your favorite movie, think about all the reasons that you like it. Is it funny? Exciting? Dramatic? Romantic? Be sure not to include too many things or else you will end up with an essay instead of a simple sentence. Once you have decided on your details, you are ready to write the topic sentence.

Here’s an example, the topic will be in orange and the controlling idea will be in green :

The best movie ever made was “Star Wars: the Force Awakens” because it was exciting and surprising .

An important point to remember is that the topic sentence should contain all relevant information that’s going to be in the paragraph. There should be no information about romance or comedy. It should only talk about what made the movie exciting.

b. Mistakes to Avoid

One of the biggest problems students face is keeping a paragraph or essay on topic. Sometimes they will write a good topic sentence but halfway through the paragraph, they think of another good idea and follow that. Without revision and editing, the topic sentence will not serve its purpose in the paragraph.

The best vacation I ever had was in Hawaii. The beaches were so beautiful and clean that swimming in them was like a dream . I especially loved the Waikiki beach. At night, there were free shows with dancers and live music. The music was so good that it made me want to dance. Dancing is my favorite thing to do in the world. When I was young, I studied ballet and tap dance. I’m thinking about taking it back up again. I might even study hip-hop!

The paragraph started out with Hawaii and end up with hip-hop dancing. You can see how the writer’s train of thought began to wander in the seventh sentence. With a different topic sentence, it would be possible to save this paragraph. Consider how different the direction would be with the following topic sentence.

The best vacation I ever had was in Hawaii. I especially loved the Waikiki beach. At night, there were free shows with dancers and live music. The music was so good that it made me want to dance and reminded me that dancing is my favorite activity in the world. In fact, when I was young, I studied ballet and tap dance. The dancing that I saw in Hawaii inspired me to get back into dancing . I might even study hip-hop!

With this new topic sentence, the second sentence would have to be eliminated or changed a bit. You can see how easy it is to get off-topic, but with a good topic sentence, and constant reference back to it, you are less likely to have that problem.

VI. So remember

• A topic sentence needs to contain the topic of your paragraph and a controlling idea.
• Everything in the paragraph should be connected to the topic sentence.
• The placement of the topic sentence depends on the type of paragraph.

VII. Exercises

Each of the paragraphs in this exercise has three possible topic sentences following it. Choose the best one and make sure that it includes the main idea of the paragraph.

1. _____________________________________________. In fact, he usually shows up five minutes early everywhere he goes. Because he’s so considerate, he hates to keep people waiting. He also believes that being early creates a better expereince. One time, when we were going to a movie together, John arrived thirty minutes earlier just so he could get the best seats in the theatre. I’m glad to have such a punctual friend.

a. John loves going to the movies.

b. John is always on time.

c. John hates to be kept waiting.

2. _________________________________________. The place is never crowded, but the service is still terrible. It seems like the staff has better things to do than wait on customers. Once I waited ten minutes just to buy a slice of pizza, and I was the only person in the whole store! I recommend staying away from Billy Bob’s Pizzeria.

a. Billy Bob’s Pizzeria has the worst pizza.

b. Billy Bob’s Pizzeria is an unpopular place to eat.

c. Billy Bob’s Pizzeria has terrible customer service.

3. I walked slowly down the dark path, afraid of my own shadow. But the tug on the leash propelled me forward. Buck, my golden retriever, was determined to take the most deserted trails through the forest. I could hear unfamiliar noises on all sides and urged Buck to do his business quickly. Oh, why couldn’t he be toilet trained? That would be better for everyone! _____________________________________.

a. Buck is an inconsiderate dog.

b. I hate walking my dog at night.

c. The forest is a dangerous place to walk at night.

4. Generally speaking, zoos these days are losing popularity. Many people feel that it’s unfair to lock up wild animals to entertain humans. ________________________________ . Some zoos go to great lengths to build a good environment for its animals. The good zoos treat their animals well and provide opportunities for the public to learn about the natural world. The best zoos protect endangered species and raise awareness about animals and their habitats.

a. Zoos perform a valuable service to society and should be part of every person’s childhood memory.

b. Zoos are horrible places that should be shut down because it’s not humane to lock up wild animals.

c. Zoos that do their best to make a pleasant habitat for the animals can be a pleasant place to visit.

List of Terms

• Alliteration
• Amplification
• Anachronism
• Anthropomorphism
• Antonomasia
• APA Citation
• Aposiopesis
• Autobiography
• Bildungsroman
• Characterization
• Circumlocution
• Cliffhanger
• Comic Relief
• Connotation
• Deus ex machina
• Deuteragonist
• Doppelganger
• Double Entendre
• Dramatic irony
• Equivocation
• Extended Metaphor
• Figures of Speech
• Flash-forward
• Foreshadowing
• Intertextuality
• Juxtaposition
• Literary Device
• Malapropism
• Onomatopoeia
• Parallelism
• Pathetic Fallacy
• Personification
• Point of View
• Polysyndeton
• Protagonist
• Red Herring
• Rhetorical Device
• Rhetorical Question
• Science Fiction
• Self-Fulfilling Prophecy
• Synesthesia
• Turning Point
• Understatement
• Urban Legend
• Verisimilitude
• Essay Guide
• Cite This Website

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• What is the writing process?
• Understanding the title
• Brainstorming
• Researching
• First draft
• Proofreading
• Report writing
• Compare & contrast
• Cause & effect
• Problem-solution
• Classification
• Essay structure
• Introduction
• Literature review
• Book review
• Research proposal
• Thesis/dissertation
• What is cohesion?
• Cohesion vs coherence
• Transition signals
• What are references?
• In-text citations
• Reference sections
• Reporting verbs
• Band descriptors

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Main body How to write a good essay paragraph

As the name suggests, the main body is the main part of your essay. It is a collection of paragraphs related to your topic, and in order to understand how to write a good main body, you need to understand how to write good paragraphs. This section will help you understand the three main structural components of any good paragraph: the topic sentence , supporting sentences , and the concluding sentence . An example essay has been given to help you understand all of these, and there is a checklist at the end which you can use for editing your main body.

The topic sentence

The topic sentence is the most important sentence in a paragraph. It is usually the first sentence, though may sometimes also be placed at the end. It indicates what the paragraph is going to discuss, and thus serves as a useful guide both for the writer and the reader; the writer can have a clear idea what information to include (and what information to exclude), while the reader will have a clear idea of what the paragraph will discuss, which will aid in understanding.

The topic sentence comprises two separate parts: the topic of the paragraph, and the controlling idea, which limits the topic to one or two areas that can be discussed fully in one paragraph.

Consider the following topic sentence (from the example essay below):

The most striking advantage of the car is its convenience .

The topic of this short essay is the advantages and disadvantages of cars, as a result of which each paragraph has either the advantages or the disadvantages of cars as its topic. In this case, the topic is the advantage of cars . The controlling idea is convenience , which limits the discussion of advantages of cars to this one idea. This paragraph will therefore give supporting ideas (reasons, facts, etc.) to show why convenience is an advantage of cars.

Here is another topic sentence from the same example essay :

Despite this advantage, cars have many significant disadvantages , the most important of which is the pollution they cause.

The topic of this paragraph is the disadvantage of cars . The controlling idea is pollution . This paragraph will therefore give supporting ideas (reasons, facts, etc.) to show why pollution is a disadvantage of cars.

Here is the final topic sentence from the same example essay :

A further disadvantage is the traffic problems that they cause in many cities and towns of the world.

The topic of this paragraph is again the disadvantage of cars . The controlling idea this time is traffic problems . This paragraph will therefore give supporting ideas (reasons, facts, etc.) to show why traffic congestion is a disadvantage of cars.

The following are key points to remember about the topic sentence:

• it should be a complete sentence
• it should contain both a topic and a controlling idea
• it is the most general statement in the paragraph, because it gives only the main idea with any supporting details

Supporting sentences

Supporting sentences develop the topic sentence. They are more specific than the topic sentence, giving reasons, examples, facts, statistics, and citations in support of the main idea of the paragraph.

Below is the whole paragraph for the second topic sentence above. The supporting sentences are in bold.

Despite this advantage, cars have many significant disadvantages, the most important of which is the pollution they cause. Almost all cars run either on petrol or diesel fuel, both of which are fossil fuels. Burning these fuels causes the car to emit serious pollutants, such as carbon dioxide, carbon monoxide, and nitrous oxide. Not only are these gases harmful for health, causing respiratory disease and other illnesses, they also contribute to global warming, an increasing problem in the modern world. According to the Union of Concerned Scientists (2013), transportation in the US accounts for 30% of all carbon dioxide production in that country, with 60% of these emissions coming from cars and small trucks. In short, pollution is a major drawback of cars.

The paragraph above has the following support:

• burning fuels (petrol and diesel) in car engines emits pollutants - fact
• cars emit carbon dioxide, carbon monoxide, nitrous oxide - examples (of pollutants)
• the pollutants are harmful for health - fact
• the pollutants cause respiratory disease - example (of how they harm our health)
• the pollutants contribute to global warming - fact
• 30% of carbon dioxide in the US comes from transport - statistic
• 60% of the these emissions come from cars and small trucks - statistic
• this information comes from Union of Concerned Scientists (2013) - citation

The concluding sentence

The concluding sentence is an optional component of a paragraph. In other words, it is not absolutely necessary. It most useful for especially long paragraphs, as it will help the reader to remember of the main ideas of the paragraph.

Below is the concluding sentence from the paragraph above:

In short, the harm to our health and to the environment means that pollution from cars is a major drawback.

Here the concluding sentence not only repeats the controlling idea of the topic sentence , that cars cause pollution, but also summarises the information of the paragraph, which is that the pollution from cars is harmful to both our health and the environment.

The following are useful transition signals to use for the concluding sentence:

• In conclusion...
• In summary...
• In brief...
• Therefore...
• In short...
• These examples show that...
• This evidence strongly suggests that...

Example essay

Below is a discussion essay which looks at the advantages and disadvantages of car ownership. This essay is used throughout the essay writing section to help you understand different aspects of essay writing. Here it focuses on topic sentences and controlling ideas (mentioned on this page), the thesis statement and general statements of the introduction, and the summary and final comment of the conclusion. Click on the different areas (in the shaded boxes to the right) to highlight the different structural aspects in this essay.

Although they were invented almost a hundred years ago, for decades cars were only owned by the rich. Since the 60s and 70s they have become increasingly affordable, and now most families in developed nations, and a growing number in developing countries, own a car. While cars have undoubted advantages , of which their convenience is the most apparent, they have significant drawbacks , most notably pollution and traffic problems . The most striking advantage of the car is its convenience. When travelling long distance, there may be only one choice of bus or train per day, which may be at an unsuitable time. The car, however, allows people to travel at any time they wish, and to almost any destination they choose. Despite this advantage, cars have many significant disadvantages , the most important of which is the pollution they cause. Almost all cars run either on petrol or diesel fuel, both of which are fossil fuels. Burning these fuels causes the car to emit serious pollutants, such as carbon dioxide, carbon monoxide, and nitrous oxide. Not only are these gases harmful for health, causing respiratory disease and other illnesses, they also contribute to global warming, an increasing problem in the modern world. According to the Union of Concerned Scientists (2013), transportation in the US accounts for 30% of all carbon dioxide production in that country, with 60% of these emissions coming from cars and small trucks. In short, pollution is a major drawback of cars. A further disadvantage is the traffic problems that they cause in many cities and towns of the world. While car ownership is increasing in almost all countries of the world, especially in developing countries, the amount of available roadway in cities is not increasing at an equal pace. This can lead to traffic congestion, in particular during the morning and evening rush hour. In some cities, this congestion can be severe, and delays of several hours can be a common occurrence. Such congestion can also affect those people who travel out of cities at the weekend. Spending hours sitting in an idle car means that this form of transport can in fact be less convenient than trains or aeroplanes or other forms of public transport. In conclusion, while the car is advantageous for its convenience , it has some important disadvantages , in particular the pollution it causes and the rise of traffic jams . If countries can invest in the development of technology for green fuels, and if car owners can think of alternatives such as car sharing, then some of these problems can be lessened. References

Union of Concerned Scientists (2013). Car Emissions and Global Warming. www.ucsusa.org/clean vehicles/why-clean-cars/global-warming/ (Access date: 8 August, 2013)

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Below is a checklist for the main body of an essay. Use it to check your own writing, or get a peer (another student) to help you.

Next section

Find out how to structure the conclusion of an essay in the next section.

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Go back to the previous section about the essay introduction .

Author: Sheldon Smith    ‖    Last modified: 26 January 2022.

Sheldon Smith is the founder and editor of EAPFoundation.com. He has been teaching English for Academic Purposes since 2004. Find out more about him in the about section and connect with him on Twitter , Facebook and LinkedIn .

Compare & contrast essays examine the similarities of two or more objects, and the differences.

Cause & effect essays consider the reasons (or causes) for something, then discuss the results (or effects).

Discussion essays require you to examine both sides of a situation and to conclude by saying which side you favour.

Problem-solution essays are a sub-type of SPSE essays (Situation, Problem, Solution, Evaluation).

Transition signals are useful in achieving good cohesion and coherence in your writing.

Reporting verbs are used to link your in-text citations to the information cited.