An essay has a generic structure of four parts- an introduction , main body, conclusion and references, and each part has a clear role and content. You should never start to write an essay before ...

a) An essay consists of an introduction and conclusion only. b) An essay has three parts: introduction, main body and conclusion. c) An essay is three paragraphs long. When writing an essay it is ...

These ideas are then explored in more detail in the rest of the essay and this in turn leads to your conclusion. An introduction will ... expand on this in the main body of the essay.