Unit 4 Why don't you talk to your parents?本单元讨论的主题是“人际交往”,其功能是“谈论问题和“提建议”。
学会用should+v..., Why don't you+v..?等句型来提建议并学会连词until, so that,although的用法。
一、观察例句，总结规律You could write him a letter.You should call him up.You really should talk to him.Maybe you could go to his house.规律：都含有could/should+动词原形。
也就是我们今天要学习的提出建议的句型。
二、提出建议的句型类别1.情态动词should，could等可以用来提出建议。
should+v ...“应该做”，shouldn't+v...“不应该做”，常用来提出请求和建议。
e.g. You should stay at home for a few days.They shouldn't be always very strict.could “可以”也可用来给出建议。
e.g. You could call up your teachers and tell them your opinion(看法)．注意区别：could 和should都可以表示建议，但could表示比 should更加委婉的建议，意思是“可以”。
should语气比较强烈，意思是“应该”。
2. Why don't you +v.?Why not +v.? 为什么不......呢？e.g. Why don't you talk to your parents?你为什么不和你的父母谈谈呢？=Why not talk to your parents?3.What about doing sth ?=How about doing sth?...…怎么样？e.g. How/ What about going out for a walk?出去散步怎么样呢?I'm going to the park. What about you?我打算去公园，那么你呢？4. Let's +v...意为“让我们做......”。
e.g. Let's go to the movies. 让我们去看电影吧。
5.You'd better (not) +v...意为“你最好（不要）做......”。
e.g. You'd better go there by yourself.你最好自己去那里。
You'd better not smoke here.你最好不要在这里吸烟。
6. Will/Would you please do sth 请你做…...好吗？e.g. Would you please go with me?请你和我一起去好吗？7.Shall we +v ...?我们做…...好吗？e.g. Shall we go to the park?我们去公园好吗？8. Would you like to do sth? 你想去做某事吗？e.g. Would you like to watch TV?你想看电视吗？9.Would you mind doing sth？你介意做某事吗？e.g. Would you mind opening the window?你介意打开窗户吗？三、如何回答提出建议的句型(1)、同意对方的建议时，一般用:Good idea. / That's a good idea. 好主意。
OK./ All right. / Great. 好/ 行/太好了。
Yes, please. / I'd love to. 是的/ 我愿意。
I agree with you. 我同意你的看法。
No problem .没问题。
Sure./ Of course./ Certainly. 当然可以。
Yes, I think so. 对，我也这样想。
Sounds good ! 听起来很好！(2)、对对方的帮助或要求表示委婉谢绝时，一般用：I don't think so .我认为不是这样。
Sorry, I can't. 对不起，我不能。
I'd love to, but I'm afraid…我愿意，但恐怕……四、连词until, so that, although引导状语从句的用法1)、until：在带有till或until引导的时间状语从句里，如果主句是肯定句，其含义是“一直到…...时”，谓语动词只能用延续性动词。
如：live, wait , last, love, like, stay, work, continue 等。
如果主句是否定句，其含义是“直到…...才…...”, 谓语动词可用瞬间动词。
e.g. He lived with his parents until he got married.他与父母住在一起直到结婚为止。
e.g. Don't get off until the bus stops.直到公共汽车停下来你才能下车。
注意：until后面的从句中不能用一般将来时，应该用一般现在时代替。
所谓的“主将从现”。
e.g. He will stay here until his mother comes back.他将待在这儿直到他的妈妈回来。
2)、so that是连词，意为“为的是，以便”，引导目的状语从句。
从句中常用can(could)，will (would)，may (might)等情态动词。
注意so that, in order that和in order to在用法上的区别。
e.g.①He studies hard so that he can work better in the future.他努力学习以便将来能更好地工作。
②He studies hard in order that he can work better in the future.③He studies hard in order to work better in the future.注意：so…that又可引导结果状语从句。
e.g. Jack is so badly ill that he has to rest.杰克病地如此严重以致于他必须休息。
(结果状语从句)3)、although引导的状语从句although的用法、意思相当于though（尽管，虽然），用来引导让步状语从句。
它所引导的从句不能与并列连词but，and，so等连用，但可以和yet，still 等词连用。
e.g. Although the book was old, we decided to buy it.尽管这本书很旧，我们还是决定买。
Although he was tired, he went on working.尽管他很累，但是他继续工作。
注意：although(though)不能与but用在同一个句子中。
例如：我们不能说：Though it was raining hard, but he stillwent out.(×) 尽管雨下地很大，但是他仍然出去了。
应该说：Though it was raining hard, he still went out.(√)或It was raining hard, but he still went out.(√)五、总结本单元重点短语1. look through 快速查看;浏览2. work out 解决;成功地发展3. get on with 和睦相处;关系良好4. communicate with 与…...交流5. in the future 在将来6. make sth clear 把某件事弄清楚7. compete with 与…...竞争8. cut out 删除;删去9. compare...with 比较;对比10. keep on doing sth. 坚持做某事六、当堂检测1.—Why not ________ to the park now?—Good idea！Let's go.A．go B．to go C．goes D. going2.—Why don't you ask your friends for help?—________.I'll call them.A．I don't agree B．Good ideaC．I hope so D．I don't like it3.—Peter，let's go out and play games.—Oh，Mike.I won't go out and play games __ I finish my homework.A．after B．when C．until D．if4.—When shall we start?—Let's wait ________ the rain stops.A．if B．as C．until D．since5.—________ Mr.Smith was very tired，he stayed up late to finish his work.—How hard－working he is!A.Because B．Unless C．When D．Although。
