1、You should do sth. 意为“你应该做某事。”
如：You should try to practice English.You should eat less before going to bed.
2、Would you like/love to do sth.? 意为“你愿意做某事吗？”
如：Would you like to come upstairs with us?
3、 Shall I/we … ? 意为“我(们)……好吗？”
如：Shall we go out for a drink?
4、 Let’s do sth. 意为“让我们做某事吧。”该句型后常带附加问句 shall we? 使语气更加委婉。
如：Let’s try something different this time,shall we?
5、You had better (not) do sth. 意为“你最好(不要)做某事”。
如：You’d better tell us why you’re asking these questions.
6、Why not...? 或 Why don’t you/we...? 意为“为什么不……呢？”
如：Why not go for a picnic this weekend?Why don’t we do that until 3:00o’clock?
7、 Will/Would/Could you please do sth.? 意为“请你做某事好吗？”
如：Will you please join me for a drink?
8、What/How about doing sth.? 意为“……怎么样？”
如：What about meeting outside the school gate?
9、 If I were you, I would do sth. 意为“如果我是你，我就……”，这是虚拟语气，用来委婉地表达建议。
如：If I were you, I would go to seehim at once.