How to Write an Introduction

The introduction is the most important paragraph in your essay. A weak, confusing introduction makes a grader *expect* a bad paper. A strong, clear, and engaging introduction makes them *want* to give you a good grade.

This guide is your resource for how to write an introduction. We teach the 3-part “funnel” structure (Macro Context) and provide a 5-step process, plus 7 types of “hooks” (Micro Context).

A great introduction is part of a great essay structure, and it must end with a perfect thesis statement.

What is an Essay Introduction?

An essay introduction is the first paragraph of your paper. Its purpose is to grab the reader’s attention, provide background on your topic, and present your main argument (the thesis statement).

As the UNC Writing Center notes, the introduction sets the tone and gives the reader a “map” of the paper. It is a critical part of your argument.

The 3 Core Components (The “Funnel” Method)

The best introductions use the “funnel” structure. They start broad and become more specific, leading directly to your thesis.

1. The Hook (Broad): An attention-grabbing sentence.
2. The Context (Medium): 2-3 sentences that provide background and narrow the topic.
3. The Thesis (Narrow): The one-sentence main argument. This is always the *last* sentence of your introduction.

How to Write an Introduction: 5-Step Process

A strong introduction is written *after* you write your body paragraphs. You cannot introduce an argument you haven’t written yet. Follow this 5-step process.

Your introduction is built to lead to your thesis. Before you write your intro, you must have your final, polished thesis statement ready. This sentence will be the *last sentence* of your introduction.

Choose a strategy to grab your reader’s attention. Your hook should be broad but related to your thesis. See our list of 7 hook types in the next section for ideas.

This is the “bridge” from your hook to your thesis. Provide background information your reader needs to understand your thesis. What text are you discussing? What historical period? What key term do you need to define? In scientific writing, this is where you establish the “gap” in the research.

Insert your thesis statement as the last sentence of the paragraph. This is a firm rule in academic writing. The transition from your context sentences to your thesis should be smooth.

Read your introduction aloud. Does the hook flow smoothly to the context? Does the context lead logically to the thesis? Cut every unnecessary word. For help, our editing and proofreading team can polish your intro.

7 Types of Introduction Hooks (with Examples)

The “hook” is the first one or two sentences. Its job is to make the reader want to read the next sentence. Here are 7 types you can use.

1. The Shocking Statistic Hook

This hook uses a surprising number or fact. It is excellent for social science, health, and business papers.

• Weak: “Many people use social media.”
• Strong: “Over 90% of teenagers use social media, and studies link this use to a 50% increase in anxiety rates since 2010.”

2. The Rhetorical Question Hook

This hook asks a question that makes the reader think. Use it carefully to avoid being cliché.

• Weak: “Have you ever wondered why we dream?”
• Strong: “If a machine could create a perfect, painless, and happy life for you, would you plug in?”

3. The Powerful Quote Hook

This hook uses a quote from an expert, a piece of literature, or a public figure. It must be relevant and *not* overused.

• Weak: “Nelson Mandela once said, ‘Education is the most powerful weapon…'” (Overused and too broad).
• Strong: “Novelist George Orwell warned, ‘In a time of universal deceit, telling the truth is a revolutionary act.’ Today, in the age of ‘fake news,’ this warning is more relevant than ever.”

4. The Vivid Anecdote Hook

This is a short (2-3 sentences) story or scene. It is perfect for personal, narrative, or admissions essays.

• Weak: “I learned a lot from my first job.”
• Strong: “My hands were sticky with soda syrup, the register was broken, and a customer was yelling about a coupon. My first day of work was not what I expected, but it was the day I learned what ‘responsibility’ truly means.”

5. The “In Medias Res” Hook

This is an advanced anecdote that starts “in the middle of the action.” It is excellent for narrative or creative papers.

• Weak: “The Civil War battle started on a hot day.”
• Strong: “The sound of the first cannon shot at 4:30 AM on July 1st, 1863, was not just a signal for the Battle of Gettysburg; it was the starting gun for a new, bloodier phase of the Civil War.”

6. The “Define a Key Term” Hook

This is a direct hook for complex, theoretical papers. It defines a key term central to your argument.

• Weak: “Webster’s Dictionary defines ‘justice’ as…” (Cliche).
• Strong: “In political philosophy, ‘justice’ is often defined by two warring concepts: individual liberty and the collective good. This essay will…”

7. The “Common Misconception” Hook

This hook grabs attention by challenging a common belief. It is excellent for argumentative papers.

• Weak: “Many people are wrong about sugar.”
• Strong: “Most people believe that a ‘sugar rush’ makes children hyperactive. However, over a dozen controlled studies have shown this to be a myth, pointing instead to social environment as the cause.”

Introduction Pitfalls to Avoid

Avoid these common mistakes. As writing guides note, these errors signal a weak argument to your professor.