1. 情态动词could / should 的用法
You could write him a letter.
Then I think you should get a part-time job.
2. 用Why don't you ...? 结构提出建议
A: My brother plays his CD too loud. What should I do?
B: Why don't you talk to him about it?
play, loud, argue, wrong, could, should, ticket, surprise, okay, either, bake, except, fail, get on, football, until, fit, possible, include, send, compare, crazy, themselves
style, part-time, haircut, upset, complain, adult
tutor, original, pressure, pushy, organized
keep out, call somebody up, on the phone, what's wrong, what's the matter, pay for, out of style, in style, the same as, as ... as, all kinds of, on the one hand, on the other hand