人教版初二（下）英语Unit 3 Could you please clean your room?语法知识点讲解含答案

Unit 3 Could you please clean your room?
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．知识点总结
Could 的用法
Could表示有礼貌地提出请求，征求许可，其用法如下：
1. Could 表示有礼貌地提出请求。Could you (please) do...?表示“请你做...好吗？”或“麻烦你做...行吗？”could you (please) do...?的否定结构是在please 后加not。
Could you (please) set the table for supper?
Could you (please) open the window and close the door?
1. Could表示征求许可，希望得到允许。句型Could I do...?表示“我可以做...吗？”
Could I go to the movies?
1. 回答时应注意几个问题：
（1）对这样的句式作答时，与其它的一般疑问句不同，作肯定回答通常用certainly, sure, of course等。作否定回答时，通常以sorry开头。
（1）回答could引导的问句时要用can或can’t，不能用could。
即学即练用所给词的适当形式填空Could you please give (give) me a piece of cake?Could you please not open (open) the door?

三．例题讲解
1. ——Could I use the phone, Miss Li?
—— ________.
A. Yes, you could B. I’m sorry I can’t
C. Yes, sure D. No, please
解析：此题为could表示委婉请求，其回答不能用could，应为实在的回答，故选C。
2. —— Could you please do the dishes?
—— ________. I’m going to do my homework.
A. Sorry, I can’t B. No, I couldn’t 　C. Yes, you can 　 D. Never
解析：此题为could表示委婉请求，其回答不能用could，而应该用can。同时根据题意可知回答应该为否定，故选A。
3. Would you please _______ the children ______ with the snake?
A. to ask; not to play 　 B. ask; not to play　
C. ask; not play D. ask; don’t play
解析：would you please do/ could you please do的句型中，would you please相当于情态动词，谓语用动词原形；ask sb to do的否定形式为 ask sb not to do，其为动词不定式的否定，故选B。
4. —— Could I look at your picture?
—— Yes, of course you _______.
　A. could B. can C. will D. must
解析：此题为could表示委婉请求，其回答不能用could，而应该用can, 故选B
5. —— Could you please pass me the salt?
—— ________
A. Sure. Here you are. B. Good idea.
C. Thank you. D. I’m sorry to hear that.
解析：此题为could表示委婉请求，其回答不能用could，而应该应为yes，I can/sure 或sorry, I can’t等，故选A
四．课堂训练
基础演练
一、单项选择（共10小题；共10.0分）
1. I'm busy. ? you please help me make the bed?
A. Could B. May C. Must D. Should
2. ? you pass me a pen? I'd like to write down the telephone number.
A. Need B. Could C. Must D. Should
3. --- ? I borrow your English book?
--- Yes, of course you ?.
A. Could; could B. Must; can C. Could; can D. Can; could
4. --- ? you lend me your camera?
--- No problem. Here you are.
A. Might B. Could C. Must D. Should
5. --- Could I go out with my friends tonight?
--- ? But you can't stay out late.
A. No, you can't. B. Yes, you can.
C. Sure, you can't. D. Yes, you could.
6. --- Could I give away my old clothes to the poor children, Mum?
--- Of course, you ?. I'm really happy to hear that.
A. can B. could C. must D. can't
7. You ? eat too many candies. It's bad for your teeth.
A. must B. can C. should D. shouldn't
8. --- Shall I tell him the news after class?
--- You ?. I have told him already.
A. can't B. mustn't C. shouldn't D. needn't
9. --- Would Ann like to sing some songs with me?
--- Sorry, she can't. She ? study math.
A. can B. may C. has to D. have to
10. --- Have you decided when to go to the beach?
--- Not yet. We ? go there this weekend.
A. may B. need C. must D. should
二、翻译(根据中文提示完成句子)（共5小题；共5.0分）
11. 请你告诉我在哪里能买到邮票好吗？
? ? ? ? where I can buy some stamps?
12. 请你倒垃圾好吗？
? you ? take out the rubbish?
13. --- 我能用一下你的钢笔吗？
--- 不，你不能。 我正在写信。
--- ? ? ? your pen?
--- ?, you ?. I'm writing a letter.
14. 但是她能做什么来帮忙呢？
But what ? she do ? ??
15. 请你遛遛狗好吗？
Could you please ? the dog ? ? ??

三、完形填空（共10小题；共15.0分）
A mother planted many kinds of vegetables in her garden. One day, she said to her 16 ?, "Betty, come here. Look at all these little yellow marks on the 17 ? of the cabbages. They are eggs of a kind of insect(虫子). They are very beautiful but very bad for cabbages. This afternoon you must 18 ? all the eggs on the leaves and kill them. In this way, you will help us have 19 ?, greener and bigger cabbages."
Betty didn't want to do it 20 ? and in the end she forgot all about it. The mother fell ill for a few days and 21 ? work in her garden. When she was well, she took Betty with her to the garden to see the cabbages. To 22 ? surprise, the insects had eaten every leaf. When Betty saw this, she began to 23 ?. Then her mother said to her, "We should never put off (推迟) what we have to do today till 24 ?. And you must learn to deal with the bad things while they are small, 25 ? they will turn into big problems."
16 A. father B. mother C. daughter D. son
17 A. trees B. leaves C. grass D. flowers
18 A. find B. eat C. fly D. sell
19 A. worse B. smaller C. thinner D. better
20 A. at most B. at least C. at once D. at last
21 A. mustn't B. couldn't C. need D. should
22 A. my B. your C. his D. their
23 A. cry B. wait C. run D. laugh
24 A. yesterday B. today C. tomorrow D. spring
25 A. but B. so C. and D. or


答案
一、单项选择
1. A 2. B 3. C 4. B 5. B
6. A 7. D 8. D 9. C 10. A
二、翻译(根据中文提示完成句子)
11. Could/Can you tell me
12. Could, please
13. Could I use, No, can't
14. could, to help
15. take, for a walk
三、完形填空
16. C 17. B 18. A 19. D 20. C
21. B 22. D 23. A 24. C 25. D