introduction in an essay definition

If you are writing in a new discipline, you should always make sure to ask about conventions and expectations for introductions, just as you would for any other aspect of the essay. For example, while it may be acceptable to write a two-paragraph (or longer) introduction for your papers in some courses, instructors in other disciplines, such as those in some Government courses, may expect a shorter introduction that includes a preview of the argument that will follow.
In some disciplines (Government, Economics, and others), it’s common to offer an overview in the introduction of what points you will make in your essay. In other disciplines, you will not be expected to provide this overview in your introduction.
Avoid writing a very general opening sentence. While it may be true that “Since the dawn of time, people have been telling love stories,” it won’t help you explain what’s interesting about your topic.
Avoid writing a “funnel” introduction in which you begin with a very broad statement about a topic and move to a narrow statement about that topic. Broad generalizations about a topic will not add to your readers’ understanding of your specific essay topic.
Avoid beginning with a dictionary definition of a term or concept you will be writing about. If the concept is complicated or unfamiliar to your readers, you will need to define it in detail later in your essay. If it’s not complicated, you can assume your readers already know the definition.
Avoid offering too much detail in your introduction that a reader could better understand later in the paper.
picture_as_pdf Introductions

Literary Terms

Essay Introduction

I. what is an introduction.

An introduction is the opening of an essay. Its purpose is to inform your audience about the topic of your essay, and to state your opinion or stance (if any) about the stated topic. Your introduction is your essay’s ‘first impression’ on your audience, and as such, it is very important!

II. Examples of Introductions

This section provides three models of successful introductions. We will be using these models to provide examples of the parts of an introduction, which are defined in section III.

We all have had enough of environmental disasters. From oil spills to coal mine explosions, our use of fossil fuels has cost us and our natural world too much. Fortunately, many companies are turning to other energy sources. I support this trend whole-heartedly because I know that using solar, wind, or tidal power instead of fossil fuels means we will have a cleaner environment. However, I am concerned that people are putting too much hope in one of these sources: solar energy. The fact is, solar energy is too slow and too unpredictable to do what many people think it can do. After examining its drawbacks, I am sure you will agree that solar power is not the answer to our energy needs.

There I was, an ant among elephants, knowing I was about to be stepped on. It was August, 2015, and I was at my first day of high school football tryouts. I was a skinny freshman about to take my first run through a line of enormous varsity players. I knew I was small, but I was also fast and I like to win. The next two weeks were the hardest of my life, but when they were over every player on the team knew my name.

Choosing the right source of clean energy is essential for every large business in the 21 st century. Many companies are investing in other energy sources in order to minimize their impact on the environment. Investing in new sources of energy can cost millions of dollars; it is therefore essential that business owners choose the right kind of energy for their companies. Currently, the best choices are solar, wind, and tidal energy. In order to choose the best energy source, a company must compare the benefits and costs for each of these energy sources. Knowing the right source of energy means more money saved and less impact on the environment.

III. Parts of Introduction

Sometimes known as a ‘hook’ or a ‘lead’, the purpose of an opening is to get your reader’s interest and have them connect to the content of the essay. A strong opening may be surprising, vivid, or thought-provoking. It’s really important because it helps the audience decide whether they want to keep reading. In most cases, the more interesting or relatable the opening is, the more likely the rest of your essay will be read, so make it good!

Example 1 (model 1)

“We all have had enough of environmental disasters.”

This is a successful opening because it makes a statement that is easy for readers to connect to.

Example 2 (model 2)

“There I was, an ant among elephants, knowing I was about to be stepped on.”

This opening is effective because it creates a vivid image through use of a metaphor. By comparing himself to an ant, the narrator helps the audience imagine his experience, which also helps the audience connect to the essay.

b. Statement of topic

An essential job of the introduction is to identify the topic for the reader. The topic may be a single sentence or a clause in a larger sentence.

“Fortunately, many companies are turning to other energy sources.”

The topic here is clearly stated for the reader. The reader can expect to read more about companies switching to other energy sources.

“I was at my first day of high school football tryouts.”

This example lets the reader know that the topic of the narrative is the writer’s experience at football tryouts.

c. Thesis (opinion or stance)

The thesis is a statement that is supported or proven in the body of the essay. An introduction must include a thesis. It is often placed at the beginning or end of the introduction.

“I am sure you will agree that solar power is not the answer to our energy needs.”

The thesis statement here makes it clear that the writer is taking a stance against solar power. It is placed at the end of the introduction after the writer has given the audience “context” for the essay (explained below).

Example 2 (model 3)

“Choosing the right source of clean energy is essential for every large business in the 21 st century.”

This thesis lets the reader know that the author believes that businesses need to choose their sources of energy carefully. Placed at the beginning of the introduction, this thesis informs readers what the opinion is right from the start.

d. Context or purpose

An introduction needs to help the reader understand why the topic is important. The introduction must give enough information for the audience to make a connection and create interest.

“From oil spills to coal mine explosions, our use of fossil fuels has cost us and our natural world too much. [. . . ] I know that using solar, wind, or tidal power instead of fossil fuels means we will have a cleaner environment.”

This introduction puts the topic of energy sources in the context of safety and environmental protection. Safety and environmental protection are interesting to most people, and something that connects to nearly everyone’s lives.

“In order to choose the best energy source, a company must compare the benefits and costs for each of these energy sources. Knowing the right source of energy means more money saved and less impact on the environment.”

The context in this introduction lets business owners know that the topic involves profit (money earned) and minimizing the effects or harm to the environment – two reasons for the audience to be interested in the essay.

e. Identification of Main Points

A detailed introduction will include information that helps the reader anticipate or predict the main ideas in the essay. This is often accomplished by listing subtopics, reasons, or evidence that will be explained in the body paragraphs.

Example (model 1)

“The fact is, solar energy is too slow and too unpredictable to do what many people think it can do.”

Based on this information in the introduction, the reader can expect the essay’s main points to discuss why solar energy is too slow and unpredictable.

Example (model 3)

“Currently, the best choices are solar, wind, and tidal energy.”

This example is a simple list that introduces three kinds of energy sources. Readers can expect to find details about these three main ideas in the body of the essay.

IV. How to Write an Introduction

Know your topic.

You must do adequate research before writing your introduction. Organize your thoughts until you have a detailed picture of what you want to write about. You need to know enough about your topic for you to define it clearly for your audience.

Set the tone

The tone of a piece sets how formal or informal it will be.

If you are introducing formal writing (such as for academics, business, or law), the tone should be polite and unemotional. Information is the focus, not emotion. Careful attention to grammar and writing conventions is essential.
On the other hand, If you are writing an introduction for an informal piece (such as for friends, a personal blog, or a journal entry), the tone will have more emotion. You may use fewer ‘fancy’ words, and choose slang or figures of speech instead.

The tone of an introduction also shows the kind of relationship between the writer and the reader. If the writer and the reader know each other personally, an informal tone works well. However, if the writer is not already on close terms with the reader, then an informal tone is best.

For example, model 3 has a formal tone. The introduction is focused on determining facts. In contrast, Model 1 has informal tone. The introduction focuses on the emotions of the author and the audience.

State your purpose and provide context

A strong introduction provides context and direction for the reader. It must include why you are writing about the topic, and what you are going to focus on. Provide information that tells the reader why the essay is important or interesting enough to read.

Take a clear point of view

An introduction must express the relationship between you (the writer) and the topic. You must state what you think, or how you feel about the topic. A clear introduction does this in a single sentence: the thesis. (See section III, part 3). It’s a good idea to put your thesis statement at either the beginning or the end of the introduction; readers tend to focus on these parts of a paragraph.

Lead the reader

Let the reader know what to expect in the body of your essay. State your main ideas in the introduction so that the reader can look for them in your following paragraphs. You may also encourage them to agree with your point of view.