Let’s say you’re writing a five-paragraph essay about the environmental impacts of dietary choices. Here are three examples of topic sentences you could use for each of the three body paragraphs:
Research has shown that the meat industry has severe environmental impacts.
However, many plant-based foods are also produced in environmentally damaging ways.
It’s important to consider not only what type of diet we eat, but where our food comes from and how it is produced.
Each of these sentences expresses one main idea – by listing them in order, we can see the overall structure of the essay at a glance. Each paragraph will expand on the topic sentence with relevant detail, evidence, and arguments.