Once you have chosen your topic, find the main point of your expository essay. This will be the core feature of what you are exposing in writing an expository essay and your body paragraphs will all focus on different elements of it. Each of your body paragraphs should focus on objectively describing a different element or component of your topic and in writing an expository essay, every body paragraph should make some mention of the thesis. When writing an expository essay, you should also cite your sources regularly and appropriately as you are meant to be writing in an objective fashion. It is also important, when writing an expository essay, to keep track of your sources and where you got your information from. Failing to properly cite a source when writing an expository paper could lead you to be accused of plagiarism.
Finally, an example of an expository essay could be one written on the subject of vinyl records for music. Your core topic or thesis would be the resurgence of vinyl records in the current music industry. In such a case, your first body paragraph would focus on how a vinyl record is made. Your second body paragraph would focus on how the music industry is changing and leading to a renewal of demand for vinyl records. Your third body paragraph would focus on the shortage of vinyl pressing plants and the challenge of producing enough vinyl records to keep up with your demand. In writing the conclusion of your expository essay, you would tied these three elements back to your thesis that there is a resurgence in demand for vinyl, and then conclude writing your expository essay by questioning whether or not the resurgence of vinyl records is a fad a or a new reality. While this is but one example of how an expository essay can be written, it is the general structure that you will use in writing expository essay in an objective manner.