New Headway Pronunciation Course Upper Intermediate

In the last section, you learned what a main idea is. Often, writers express their main idea in a clearly defined sentence known as a topic sentence. Topic sentences are usually found at the beginning of a paragraph in order to immediately establish the main idea. But this is not always the case—topic sentences can be found anywhere in a paragraph, and sometimes, the author chooses not to use one at all. Still, looking for the topic sentence is a good skill to have when ferreting out the meaning of a reading passage....