Thansitional expressions for listing ideas (e.g., first, second, another idea,finally) are often used in the topic sentence to indicate both the order of the main ideas, and to indicate the beginning of a new parageaph.
In the model essay, the body paragraphs are in the same order as the main ideas in the thesis statement, and they begin with transitional words.
Thesis states go to university for a variety of reasons: academic interest (A), future career (B), or cocial life (C).
Body paragraph 1 topic sentence:
First, many students attend university to study a study a particular subject in depth.
Body paragraph 2 topic sentence:
Another common reason for going to university is that a college education often leads to a better career in the future.
Body paragraph 3 topic sentence:
Finally, for some students, making friends and enjoying an active social life can be a sufficient reason to stay in school for another four years.