In Chapters 1 and 2, you learned the two basic parts of anything you read: a main idea and the supporting details that explain and develop that idea. As you have seen, the main idea may be clearly stated in one sentence of a selection.
However, sometimes the main idea is implied—only suggested by the supporting details and not clearly stated
in one sentence. The reader must figure out such an
implied main idea by considering the supporting details.
![](https://i.ytimg.com/vi/1IilfIagSko/mqdefault.jpg)