The topic sentence is a sentence that is used at the beginning of a paragraph to tell the reader what it is that you are going to be talking about in that paragraph. It’s very similar to the thesis statement that you may have learned about if you took an English composition class, except on a much smaller scale. (On a side note, make sure you check out Udemy’s college writing essentials course if you’re a student in need of a little refresher).
The topic sentence is important because it leads the reader into the points that you are trying to make, without leaving them confused. It also helps to prevent any miscommunication on your part.