How to write an essay: thesis, structure, paragraphs and evidence

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Whether it is for school, university or an application, an essay is an argument. You are not just presenting information; you are answering a question and persuading the reader that your answer is sound. Once you see it that way, the structure starts to make sense.

Understand the question

Many weak essays answer a slightly different question from the one asked. Underline the key instruction words:

Discuss or evaluate: weigh both sides and reach a judgement.
Explain: show how or why something happens.
Compare: set out similarities and differences.
To what extent: give a measured answer, not simply yes or no.

Note any limits on the topic, such as a time period or a set text, and the word count.

Research and plan

Gather material before you write, and record where each idea came from so you can cite it later. Then make a plan. Even a short list of points in order saves hours of rewriting. A common approach is to group your notes into three to five main points that support your answer.

Write a strong thesis

The thesis is your answer to the question in one or two sentences. It should be specific and arguable, meaning a sensible person could disagree.

Weak: Social media has advantages and disadvantages.
Stronger: Social media has made political campaigns more responsive to voters, but it has also rewarded outrage over policy detail.

The thesis usually sits at the end of the introduction. It is your promise to the reader, and every paragraph should help keep it.

Structure the essay

The classic shape works because it is easy to follow:

Introduction: context, what the question involves, and your thesis.
Body paragraphs: each one makes one point that supports the thesis.
Conclusion: draws the argument together and answers the question.

Order the body paragraphs so they build. You might move from the strongest point to the weakest, from the simplest to the most complex, or deal with the counter-argument before your final point.

Build each paragraph

A reliable pattern for body paragraphs is point, evidence, explanation, link:

Point: a topic sentence stating the paragraph's claim.
Evidence: a quotation, statistic, example or source that supports it.
Explanation: how the evidence proves the point. This is where marks are usually won or lost, because evidence does not speak for itself.
Link: connect back to the thesis or lead into the next paragraph.

One idea per paragraph keeps the argument clean. If a paragraph runs to a page, it probably contains two points.

Use evidence well

Choose evidence that genuinely supports your point, not just evidence on the same topic.
Keep quotations short and introduce them; do not drop a quotation in unexplained.
Cite sources in the style your teacher or institution asks for, and never present someone else's words or ideas as your own.
Prefer reliable sources: academic books and journals, official statistics and respected publications.

Deal with the other side

Acknowledging a counter-argument makes your essay more convincing, not less. Present the opposing view fairly, then explain why your position still holds, or how it needs to be qualified. This is what separates analysis from a list of opinions.

Introductions and conclusions

Many writers find it easier to write the introduction last, once they know exactly what the essay argues. A good introduction is brief: a sentence or two of context, a sense of the key issue, and the thesis. Avoid sweeping openers such as "Since the dawn of time". The conclusion should not simply repeat the introduction. Summarise how your points answer the question, state your final judgement, and, if it fits, note why it matters or what remains open. Do not introduce major new evidence at the end.

Revise before you submit

Check every paragraph supports the thesis; cut those that do not.
Make sure you have answered the question actually asked.
Read it aloud for clumsy sentences, then proofread separately for spelling and citations.
Leave time for this. A day away from the draft helps you see its problems.

If you are stuck on a particular essay question, post it in the comments below and others can help you sharpen your thesis.