make a proposal
make a suggestion
give advice
口语中习惯用why not
如：Why not try it again? 为什么不再试试呢？
1、Shall we … ? 例：Shall we go skating tomorrow?
2、You'd better (not) do sth 例：You'd better not climb that tree, or you'll hurt yourself one day.
3、I advise you (not) to do sth. 例：He's not a good boy. I advise you to keep away from him.
4、I suggest (that) you (should) do sth.例：I suggest you eat less food and take more exercise.
5、why not ...？为什不呢？
6、You'd better (not) do sth. 你最好（不）做某事。
7、why don't you do sth? 你为什么不？
8、advise *** (not) to do sth 劝告某人（不）做某事。
9、Let *** do sth .让某人做某事
10、What do oyu think of doing sth? 你认为做某事？
11、shall we do sth?让我们一起做吧。
