1、Unit 3 Could you please clean your room?語法篇一.教學目標學生通過本講學習，能夠掌握本單元的重點語法，并在綜合能力上有一定的拓展。二.知識點總結Could的用法Could表示有禮貌地提出請求，征求許可，其用法如下：1. Could 表示有禮貌地提出請求。Could you (please) do？表示"請你做 好嗎？”或“麻煩你做 行嗎？" could you (please) do？的否定結構是在 please 后力口 not。Could you (please) set the table for supper?Could you

2、 (please) open the window and close the door?2. Could表示征求許可，希望得到允許。句型 Could I do.?表示“我可以做 嗎？”Could I go to the movies?3. 回答時應注意幾個問題：(1)對這樣的句式作答時，與其它的一般疑問句不同，作肯定回答通常用 certainly, sure, of course 等。作否定回答時，通常以 sorry 開頭。(2)回答could引導的問句時要用 can或can ' t ,不能地ould 。即學即練用所給詞的適當形式填空1. Could you please give

3、(give) me a piece of cake?2. Could you please not open (open) the door?三.例題講解1. Could I use the phone, Miss Li?A. Yes, you couldB. I ' m sorry I can ' tC. Yes, sureD. No, please解析：此題為could表示委婉請求，其回答不能用 could ,應為實在的回答, 故選Co2. Could you please do the dishes?I ' m going to do my homework.A.

4、 Sorry, I can ' t B. No, I couldn C. Yes, ydu canD. Never解析：此題為could表示委婉請求，其回答不能用 could ,而應該用can。同 時根據題意可知回答應該為否定，故選Ao3. Would you please the children with the snake?A. to ask; not to playB. ask; not to playC. ask; not playD. ask; don ' t play解析： would you please do/ could you please do的句型中,

5、 would you4.please相當于情態動詞，謂語用動詞原形； ask sb to do 的否定形式為ask sb not to do ,其為動詞不定式的否定，故選 B。Could I look at your picture?Yes, of course you.A. couldB. canC. willD. must解析：此題為could表示委婉請求，其回答不能用 could ,而應該用can,故選B5. Could you please pass me the salt?A. Sure. Here you are.B. Good idea.C. Thank you.D. I 

6、9; m sorry to hear that.解析：此題為could表示委婉請求，其回答不能用 could ,而應該應為yes, I can/sure 或 sorry, I can ' t 等，故選 A四.課堂訓練基礎演練一、單項選擇（共10小題；共10.0分）1. I'm busy. you please help me make the bed?A. CouldB. MayC. MustD. Should2. you pass me a pen? I'd like to write down the telephonenumber.A. NeedB. CouldC

7、. MustD. Should3. - Lborrow your English book?-Yes, of course youA.mayB. needC. mustD. shouldA. Could;couldB. Must; canC. Could; canD. Can; could4. - you lend me your camera?-No problem. Here you are.A. MightB. CouldC. MustD.5. - Could I go out with my friends tonight?- But you can't stay out la

8、te.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.canB.couldC.mustD.7. You eat too many candies. It's bad for your teeth.A.mustB.canC.shouldD.8. - Shall

9、 I tell him the news after class?-You . I have told him already.A. can'tB. mustn't C. shouldn't D.9. - Would Ann like to sing some songs with me?-Sorry, she can't. She study math.A. canB. mayC. has toD.10. - Have you decided when to go to the beach?Shouldcan'tshouldn'tneedn&#

10、39;thave to-Not yet. Wego there this weekend.二、翻譯（根據中文提示完成句子）（共5小題；共5.0分）11 .請你告訴我在哪里能買到郵票好嗎？where I can buy some stamps?12 .請你倒垃圾好嗎？you take out the rubbish?13 .-我能用一下你的鋼筆嗎？-不，你不能。我正在寫信。-your pen?- ,you .I'm writing a letter.14 .但是她能做什么來幫忙呢？But what she do?15 .請你遛遛狗好嗎？Could you please the dog?三

11、、完形填空（共10小題；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 littleyellow marks on the 17 of the cabbages. They are eggs of a kind of insect（ 蟲子）.They are very beautiful but very bad for cabbages. This afternoon yo

12、u must 18 all the eggs on the leaves and kill them. In this way, you will help us have 19, greener andbigger cabbages."Betty didn't want to do it 20 and in the end she forgot all about it. The mother fell 川 for a few days and 21 work in her garden. When she was well, she took Betty with her

13、 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 mothersaid to her, "We should never put off （ 推遲）what we have to do today till 24. And you must learn to deal with the bad things whilethey are small,25they will

14、turn into big problems."16A.fatherB.motherC.daughterD.son17A.treesB.leavesC.grassD.flowers18A.findB.eatC.flyD.sell19A.worseB.smallerC.thinnerD.better20A.at mostB.at leastC.at onceD.at last21A.mustn'tB.couldn'tC.needD.should22A.myB.yourC.hisD.their23A.cryB.waitC.runD.laugh24A.yesterdayB.todayC.tomorrowD.spring25A.butB.soC.andD.or答案 一、單項選擇1. A2.