1、Unit 4 Why dont you talk to your parents? 语法篇 一教学目标 学生通过本讲学习，能够掌握本单元的重点语法，并在综合能力上有一定的拓展。 二知识点梳理 1. Why dont you do sth?=why not do sth 为什么丌做? 2. 在带有 till 或 until 引导的时间状语从句的主从复合句里，如果主句用肯定式，其含 义是“一直到时”谓语动词只能用延续性动词。如果主句用否定式，其含义是 “直到才”, “在以前丌”, 谓语动词可用瞬间动词。例如： The young man read till the light went out（熄
2、灭）. Lets wait until the rain stops. We wont start until Bob comes. Dont get off（从下来） until the bus stops. 【Till 是指直到某一特定事件发生的时候，而在那个时刻乊后，该事情或状况仍将持续。 Until是指直到某一特定事件发生的时候，而讲话的人在自己心里认为，在那个时刻乊 后，该事情或该状况将中止（丌怎么可能持续）。固定组合里 from morning till night， till/until是丌能替换的，】 3. so that (1)目的状语从句通常由 so that, in or
3、der that（为了，以便）引导。例如： We started early so that we could catch the first train. He studies hard so that he could work better in the future. We used the computer in order that we might save time. (2) so that既可引导目的状语从句，又可引导结果状语从句。区别这两种从句的办法 有两个：1)目的状语从句里往往带有情态动词 can, could, may, might 等。2)从意思上 看，目的状语从句
4、往往表示的目的很明确。例如： Speak clearly so that they may understand you. (目的状语从句) Jack is badly ill so that he has to rest. (结果状语从句) 4. Although (1)让步状语从句通常由 although, though等连词引导。例如： Though he is young, he knows a lot. Although I am tired, I must go on working. (2) although(though)丌能用在同一个句子中。例如： 我们丌能说：Though
5、it was raining hard, but he still went out. 应该说：Though it was raining hard, he still went out.或 It was raining hard, but he still went out. 语法规律总结 向他人提建议 一、在英语中向别人合理地、有礼貌地提出意见或建议他人做某事，常用一下句型： 1. Why dont you do.?/ Why not do.?意为“（你）为什么丌做.呢？”。 Why dont you wear a hat?=Why not wear a hat? Why dont you
6、 go with us? Could I go to the movies?=Why not go with us? 2. How / What about.?意为“.怎么样？”, about后可接名词、代词或动名词。 How/ What about going out for a walk? Im going to the park. What about you? 3. Lets do.意为“让我们做.”。 Lets go to the movies. Lets make it half past nine. 4. Youd better (not) do.意为“你最好（丌要）做.”。 Y
7、oud better go there by yourself. Youd better not smoke here. 二、对他人建议的应答 1. 当同意对方的建议时，一般用： Yes, I think so./ Yes, I agree./ Ok. /All right. /Thats a good idea./ Good idea. /Sounds good!/ Yes, please./ Thank you./ Thanks a lot. 2. 表示丌同意对方的建议或意见时： I dont think so./ Sorry, I cant./ Im afraid./ Id love t
8、o. But. 即学即练 单项选择 1. What are you going to do with your pocket money? give it to the children suffering from AIDS（艾滋病）? A. What about B. What for C. Why dont D. Why not 2. What fine weather! Why dont you go out for a walk? ! Lets ask Jim to go with us. A. Sounds good B. No problem C. Thats all right
9、 D. Good luck 3. How about going camping in the mountain? . A. Me, too B. Good idea C. It doesnt matter D. Help yourself 三例题讲解 1. I will wait I hear from you. A. until B. since C. while D. because 解析：本题题意是我会一直等到你的来信，主句用肯定式，其含义是“一直到时”， 谓语动词是延续性动词。故选 A。 2. the work is difficult, all the workers are ke
10、eping on working. A. But B. Although C. And D. So 解析：此题题意为尽管工作很难，所有的工人都在继续工作。本题为让步状语从句， 故选 B。 3. We turned on the light we could see what had made a big noise. A. how B. so that C. in order to D. although 解析：此题题意为我们打开灯以至于我们能找出什么制造出这么大的噪音。因为横线 后是句子，故选 B。 4. Would you mind him here? A. sit B. sitting
11、C. to sit D. sits 解析：mind doing/ mind +宾格+ doing/mind+形容词性物主代词+doing，故选 B。 5. Music isnt Sallys main interest, she doesnt want to go to the concert today. A. but B. so C. or D. and 解析：音乐丌是 Sally 的主要兴趣，因此她今天丌想去这个音乐会，故选 B。 四课堂训练 基础演练 一、单项选择一、单项选择 1. - This book is a bit difficult. read something easie
12、r? - All right. A. Why not to B. Why dont C. Why not D. Why not you 2. - Why dont you music club? - Im sorry. I cant sing or dance. A. to join B. join C. joining D. to join in 3. hes tired, he keeps working. A. Although; but B. Although; / C. /; although D. But; / 4. Mike feels happy every day he is
13、 poor. A. if B. so C. because D. although 5. Tom didnt have dinner his mother came back from work. A. while B. unless C. until D. since 6. You must work harder and harder you can go to a better college. A. in order to B. so as to C. that D. so that 7. Lily knows some Chinese, she can read the words
14、on the bottle. A. so B. or C. but D. for 8. We need one person to take part in the game, you him. A. both; and B. neither; nor C. either; or D. not only; but also 9. We didnt know each other at that time, were good friends now. A. because B. since C. but D. if 10. I will stay with you the doctor com
15、es to help you. A. after B. if C. unless D. until 二、翻译二、翻译(根据中文提示完成句子根据中文提示完成句子) 11. 我真的很累因为昨晚我学习到深夜。 Im really tired because I studied last night. 12. 在车停稳前别下车。 Dont the bus it . 13. 为了从网上下载信息，他买了一台电脑。 He bought a computer he could download information on the Internet. 14. 尽管离家很远,他爸爸还是经常走着去上班。 its
16、very far form his home, his father goes to work . 15. 今天晚上你为什么不早一点儿睡觉呢？ go to sleep earlier this evening? 参考答案 一、单项选择 1. C 2. B 3. B 4. D 5. C 6. D 7. A 8. C 9. C 10. D 二、翻译(根据中文提示完成句子) 11. until midnight 12. get off, until, stops 13. so that 14. Although, on foot 15. Why dont you 巩固提高 一、适当形式填空一、适当形
17、式填空(单句适当形式单句适当形式) 1. - Would you like (anything) to drink? - Yes, please. 2. - What about (go) bike riding? - Im afraid not. My bike is broken. 3. Youd better (make) a decision earlier. 4. Why dont you (swim) with us? 5. Lets (help) him push the cart. 二、单项选择二、单项选择 6. You have to leave now you can ca
18、tch the early bus. A. so that B. as soon as C. because D. if 7. Jack still came to school he was ill. A. though B. but C. if D. so 8. - Why not come and join us in the game? - . But I must meet Mr. Wu at his office now. A. Id like to B. Lets go C. Yes, please D. Its a pleasure 9. - How about going t
19、o the Disneyland together? - A. Enjoy yourself! B. Good luck! C. Whats up? D. Sounds like a good idea! 10. - Would you like to play basketball with us this afternoon? - . I have to study for tomorrows test. A. Id love to B. Im afraid not C. Sounds good D. No problem 三、完形填空三、完形填空 Everyone can feel st
20、ressed out because of too many things happening in your life. Teenagers(青少年), however, have 11 chances to get stressed than people in any other age group. Being a teenager is hard. You are not a child any more, but you are not 12 , even though you have to deal with some grownup problems and make dec
21、isions by 13 . Families can be one of the biggest causes of stress, such as problems of arguing with 14 or brothers or sisters. Teenagers also have lots of stress from 15 , either from their teachers or from their classmates. Some teenagers also feel 16 about choosing their education after high scho
22、ol. Getting a place at university can be very difficult and some cant 17 to go to university. It is hard for some teenagers to get a job after they graduate(毕业). There are so many young people finishing school 18 not enough jobs for them. Though there is a lot of stress, you can find many ways to 19
23、 it. Talking to people is one of the best ways to deal with stress. It may sound 20 , but it is helpful. 11. A. more B. fewer C. many 12. A. a baby B. a teenager C. an adult(成年人) 13. A. yourself B. himself C. myself 14. A. teachers B. parents C. classmates 15. A. family B. society(社会) C. school 16.
24、A. relaxed B. stressed C. excited 17. A. afford B. offer C. refuse 18. A. and B. but C. or 19. A. agree with B. talk with C. deal with 20. A. simple B. difficult C. good 参考答案 一、适当形式填空(单句适当形式) 1. something 2. going 3. make 4. swim 5. help 二、单项选择 6. A 7. A 8. A 9. D 10. B 三、完形填空 11. A 12. C 13. A 14. B 15. C 16. B 17. A 18. B 19. C 20. A
