Introductions can be a big, inefficient, waste of time and space at the start of an essay, especially if it’s quite a short answer. Avoid that by writing your introduction at the end of the writing process – don’t forget to leave a space for it, or to go back and do it, though! Once you’ve already written the body of the answer, it’s much easier to go back and write a couple of sentences summarising what you’re going to say.
Students often don’t realise how valuable a good introduction can be: your examiner is tired, they’re reading a lot of essays on the same subject, and they’re probably seeing the same mistakes over and over again. So make their job easier: tell them right at the top, very clearly, what you are going to say and what your overall conclusion is going to be. Don’t leave them hanging or guessing – that’s a rhetorical device that works in some places, but doesn’t belong in most essays. If you can give the reader that information quickly and clearly at the start, they’re going to be filled with confidence that you know what you’re doing as they go into reading the rest of the answer. And repeat it at the end, too: a conclusion should summarise what you have said clearly and briefly, and never introduce new information. It seems repetitive, but it’s about emphasising what you’re saying so the reader knows what’s really important.
Similarly, use paragraphs and, if they’re allowed, sub-headings to break up your text and signpost your arguments. A new paragraph or heading can help to make it clear that you’re done with one point and you’re moving onto a new one. And for a good structure, each paragraph should make a point, with evidence, and explain/analyse that point. A good structure is another thing which helps the examiner to see that you have thought about your answer, you know what you’re talking about, and you are going to help them to give you a nice, high, grade.
That brings us to the classic ‘Point, Evidence, Explanation’ structure. It works, use it!
For example, in this Philosophy A Level question:
‘Explain what Aristotle means by ‘virtue’ and whether his definition is circular.’
You could say:
‘Aristotle says that virtue is a thing that a virtuous person does, and that is circular.’
But that’s not very clear. With the PEE structure, it’s better:
‘Aristotle’s definition of ‘virtue’ is circular. [Point] Aristotle says that a virtuous act is an act which a virtuous person would commit in the circumstances. [Evidence] This is circular because the definition of ‘virtue’ depends on knowing who a virtuous person is, and a person can only be virtuous if they do virtuous things. [Explanation].’
This works for a range of subjects, but especially English, Philosophy, and History style essays.