What is the main idea in this paragraph? When people write they have in mind a certain audience, or group of people that they write for. The audience or group of people you are writing for influences your writing style. It influences your choice of words. It influences your vocabulary. As a writer you should write so that it is interesting and readers understand what you want to say. So you have to know what your readers or your audience know about the topic that you are going to write about. Your When you write you need to know who you are writing and why you are writing. When you write you need to know as many details about words as possible