How to Write an Essay Introduction That Earns the Second Sentence
What a reader actually does in the first thirty seconds of your essay, the four introductions that lose them, and one shape that works for almost any assignment. With three versions of the same opening, from limp to sharp.
At a glance
- Good for
- any essay with a thesis argumentative, analytical, expository, most college assignments
- Length of an introduction
- 5 to 10 percent of the essay one paragraph for anything under 2,000 words
- Time
- 20 minutes, after the draft write it last; the section below explains why
- What you leave with
- a three-move opening and a thesis you can defend
- Level
- high school through college
The short version
- A reader decides in the first two or three sentences whether to read carefully or skim. The introduction's only job is to win that decision.
- Four openings lose it reliably: the dictionary, the dawn of time, the question nobody asked, and the announcement. All four are habits, not choices.
- One shape works almost everywhere: a specific first sentence, two or three sentences of context the reader needs, and a thesis that someone could disagree with.
Here is what happens when I pick up a student essay. I read the first sentence. If it tells me something, I read the second. If the second tells me something too, I settle in and read the way the writer hoped I would, slowly, giving the argument the benefit of the doubt. If the first two sentences tell me nothing, I do something I am not proud of: I skip to the end of the paragraph, find the thesis, and skim the rest looking for evidence that the writer can think.
Every instructor does a version of this. Every admissions reader does it. Every editor does it. Nobody announces it, and most readers would deny it, but the decision about how to read your essay is made in the first thirty seconds, and it is made on the strength of two or three sentences.
That is the whole case for caring about introductions. Not because they are graded separately, but because they decide how the rest of the essay gets graded.
Four openings that lose the reader
I could list twenty, but four account for most of what crosses my desk. Each one is a habit rather than a decision. Students do not choose them; they reach for them because the blank page is frightening and these are what the hand does on its own.
The dictionary. “Merriam-Webster defines justice as…” The reader knows what justice is. What they do not know is what you think about it, and the definition delays that by a sentence while suggesting you needed a dictionary to begin. It is the writing equivalent of clearing your throat. Cut it and start with the sentence that came after it.
The dawn of time. “Since the beginning of human civilization, people have wondered…” This opening has appeared above essays on every subject ever assigned, and it fits all of them because it says nothing about any of them. It is a sign that the writer has not yet found the specific thing this essay is about. The fix is not to write a better version of the sentence. The fix is to find that specific thing and start there.
The question nobody asked. “Have you ever wondered what makes a leader great?” No. And even if the reader had, the question does not move the essay forward; it just restates the assignment with a question mark. A rhetorical question at the top of an essay is a request for the reader to supply the interest that the writer has not yet earned.
The announcement. “In this essay, I will discuss the causes of the French Revolution.” This is honest and organized and it belongs in an outline, not in the essay. It tells the reader what is coming without giving them a reason to want it. Compare it with the sentence a good writer would put there instead, which is the actual first cause, stated as a claim.
Notice that all four share one flaw. They are general. They could open a different essay. That is the test I want you to carry away from this page: if your first sentence could sit on top of someone else’s paper, it is not yet your first sentence.
One shape that works almost everywhere
There is no single correct introduction, but there is a shape that holds up across nearly every academic assignment, and it has three moves. I will describe them in order and then show all three in one paragraph.
The first move is a specific sentence. Not a hook in the sense of a trick, but a sentence with a fact, a scene, a number, or a claim in it that is narrower than the topic. If the essay is about the French Revolution, the first sentence is not about revolutions; it is about the price of bread in Paris in the spring of 1789, or about one decision the king made, or about a single pamphlet. Specificity does the work that drama is usually asked to do, and it does it without making the reader suspicious.
The second move is context, and this is the one students get backwards. Context is not everything the reader might need to know about the subject. It is only what the reader needs in order to understand your thesis when they reach it. Two or three sentences, sometimes one. If you find yourself writing a fourth sentence of background, ask whether the thesis actually depends on it. Usually it does not, and the sentence belongs in the body, or nowhere.
The third move is the thesis, and it has exactly one requirement: a reasonable person could disagree with it. “The French Revolution had many causes” is not a thesis, because nobody would argue the other side. “The French Revolution was a fiscal crisis before it was a political one, and the political story we tell obscures that” is a thesis, because a historian could push back, and the essay now has a job.
Put the three moves together and an introduction is a paragraph that goes from a particular to a claim, with just enough road between them for the reader to follow.
The same opening, three times
Say the assignment is a five-page essay on whether remote work has been good for productivity. Here is a first draft of the introduction, the kind I see most often.
Ever since the pandemic, remote work has become a hot topic. Many people believe that working from home is more productive, while others believe that it is less productive. There are many factors to consider. In this essay, I will examine both sides and argue that remote work has both benefits and drawbacks.
Nothing here is wrong. Nothing here is anything. The first sentence could open a thousand essays. The thesis says the essay will argue that a thing has pros and cons, which is not an argument, it is a shrug. A reader who reaches the end of this paragraph knows exactly as much as they did before, and now has to decide whether to trust the writer for four more pages.
Second draft, after we talked about specificity.
In 2023, a large tech company ordered its employees back to the office three days a week, citing productivity. The company’s own internal data, leaked a few months later, showed no measurable difference in output between remote and in-office teams. This gap between what managers believe about remote work and what the numbers show is the subject of this essay. I will argue that the productivity case against remote work is weaker than it looks.
Better. There is a fact in the first sentence, a tension by the second, and a thesis that takes a side. But the second and third sentences are still doing the announcing, and the thesis is hedged: weaker than it looks, compared to what? The writer knows what they think and is not quite saying it.
Third draft.
When a large tech company ordered employees back to the office three days a week in 2023, it cited productivity. Its own data, leaked that autumn, showed none of the difference it had promised. The company was not lying; it was measuring the wrong thing. Managers who oppose remote work are usually counting hours they can see, and this essay argues that visible hours are a poor proxy for output, that the best available studies find remote work neutral to slightly positive for measured productivity, and that the real cost of remote work is to something else entirely: the training of junior employees, which no productivity metric captures.
That is a long introduction, and for a five-page essay it is about the right length. It has a scene, a turn, and a thesis with three parts the essay can now spend a page and a half on each. A reader who finishes this paragraph knows what the writer thinks and why it might be true, and they have a reason to keep reading: the last clause promised a cost nobody talks about, and they want to know what it is.
Notice what did not change between drafts. The topic, the assignment, the writer’s actual opinion. What changed is that the opinion got sharper each time, and the introduction got more specific, and those two things turned out to be the same thing.
Write it last
Every student I have ever taught has drafted the introduction first, and I understand why. It comes first on the page, and writing it feels like making progress. But an introduction is a promise about what follows, and you cannot make an accurate promise about an essay that does not exist yet. What actually happens is that the student writes the introduction to the essay they plan to write, then writes a different and usually better essay, then submits the two stapled together.
Draft the body with a single working sentence at the top: your best guess at the thesis, ugly and provisional. When the body is done, read it and ask what you actually argued. That is your thesis. Now write the introduction to that essay, in twenty minutes, using the three moves above. It will be better than anything you could have written on day one, because now you know what you are introducing.
Then cut the first sentence. Not always, but check. In more than half the drafts I see, the real introduction begins at sentence two, and sentence one was the writer warming up. If the paragraph reads cleanly without it, it was never load-bearing.
The check
Before you submit, read your introduction against these, and be honest about each.
- Could the first sentence sit on top of a different essay? If so, it is not specific enough.
- Is every sentence of context something the thesis actually needs? If a sentence is only there because it is true, move it.
- Could a smart person disagree with the thesis? If everyone would nod, you have a topic, not an argument.
- Does the thesis come last in the paragraph? Readers look for it there.
- Does the paragraph promise anything the body does not deliver? If yes, fix the promise, not the body.
An introduction that passes all five will not win a prize on its own. It will do something more useful: it will make the reader take the next four pages seriously, which is the only thing an introduction is for.
Questions
how long should an essay introduction be
Roughly five to ten percent of the whole piece. For a 1,000-word essay that is 50 to 100 words, a single paragraph. For a 3,000-word paper it can stretch to two paragraphs, and a thesis-length work gets a full section. The common mistake runs the other way: an introduction that takes a fifth of the essay to arrive at the point, usually because it is doing the thinking the writer should have done before drafting.
should i write the introduction first or last
Last, or at least last before revision. An introduction promises what the essay delivers, and you cannot promise accurately until the essay exists. Most writers who draft the introduction first end up with an opening that describes the essay they planned, not the one they wrote. Draft the body with a one-line working thesis at the top, then come back and write the real introduction in twenty minutes.
what is a hook in an essay
The first sentence, and the word has done a lot of damage. Students hear hook and reach for a shocking statistic, a famous quotation, or a rhetorical question, which are three of the weakest openings in academic writing. What the first sentence needs to do is be specific: a concrete fact, a scene, a claim narrower than the topic. Specificity is what makes a reader keep going; drama usually makes them suspicious.
can an introduction start with a question
It can, and it almost never should. A question at the top of an essay asks the reader to do work you have not done yet, and the answer is usually obvious or the question is fake. The exception is a genuinely open question the essay will then answer with evidence, phrased so precisely that it could not have opened a different essay. If your question would fit above three other papers, cut it.
where does the thesis statement go in the introduction
At the end of the introductory paragraph, in most academic essays written in the United States. Readers and instructors are trained to look there. The thesis should be the last one or two sentences, so that everything before it reads as a runway and everything after it reads as proof. Burying it in the middle, or saving it for the conclusion, costs you the reader who was skimming to find out what you are arguing.