山东省泰安市肥城市第三中学高中英语 Unit 2 Healthy eating情态动词语法学案 新人教版必修3.doc

山东省泰安市肥城市第三中学高中英语 Unit 2 Healthy eating情态动词语法学案 新人教版必修3‎ 教学内容 Learning aims: ‎ ‎1 知识与能力：To master some sentence patterns ‎2 过程与方法：To msater the usage of Grammar情态动词 ‎3 情感态度与价值观：Try to pay your attention to the class!‎ Learning key points: To master some sentence patterns Learning difficult points: To master the usage of Grammar情态动词 ‎【学案使用说明】在提前预习的前提下完成 学习指导即时感悟 ‎【回顾复习】‎ Check the home work (have a dictation of the language points)‎ ‎【自主 合作 探究】‎ ‎1. have to ‎ have to 表示客观需要去做的事情，意为“必须，不得不。”‎ e.g. I have to get the station early to catch the first train.‎ ‎ We missed the bus so we had to walk home.‎ have to 有多种时态。常见的有:‎ 一般将来时 We will have to gather at the school gate at 7 tomorrow.‎ 一般现在时 I have to take more money with me because my wife has so much to buy.‎ 一般过去时 Finally, we had to give up our idea to hold a picnic outside as it rained for a whole afternoon.‎ ‎2.dare & need Need I do …? Yes, you must.‎ ‎ No, you needn’t. ‎ ‎ ‎ 情态动词 实义动词 dare 否，疑，条 ‎ dare not do 否,疑don’t dare to do 　　　　 don’t dare do 不用于肯定句 肯：dare to do ‎ need 否，疑 ‎ needn’t do ‎ (don’t) need sth ‎ (don’t) need to do 本单元语法点仍是情态动词的使用 5‎ 肯：must, have to, ought to, should ‎ ‎ 注意对need问句的回答:‎ ‎ --Need I finish the work today?‎ ‎ --Yes, ________________.‎ ‎ No, ________________.‎ ‎ No, ________________.‎ needn’t 对其它情态动词的回答:‎ ‎ --Shall I tell John about it?‎ ‎ --No, you _______‎ ‎ --Must we do it now? ‎ ‎ --No, you __________.‎ ‎ Could I borrow your dictionary?(委婉)‎ ‎ ---- Yes，you can/may. ‎ ‎ Sure. Go ahead. ‎ ‎ Please yourself.‎ May I take this seat?(第一人称疑问句)‎ ‎ Yes, you may. ‎ ‎ No, you mustn’t.‎ ‎3. must +have done 表示对过去已经发生的行为进行推测，意为“想必/准是/一定作了某事”。‎ It must have rained last night, for the road was very muddy.‎ ‎ 昨晚 一定是下雨了， 因为地上很泥泞。‎ We must have learned 2,000 words by the end of last term.‎ ‎ 到上学期为止我们一定学了有两千个单词 。‎ ‎4. can/could+have done表示对过去的行为的怀疑和不肯定，通常用在否定句和疑问句中。‎ ‎ Can they have won the basketball match?‎ 他们可能赢了篮球赛吗？‎ ‎ It couldn’t have been Mr. Green. He has gone to New York.‎ ‎ 那不可能是格林先生的，他已经去北京了。‎ ‎5. may/might+have done表示对过去已发生行为的推测，意为“也许/或许已经…”。一般只用于肯定句和否定句中，不用与疑问句。might比may更委婉、含蓄和不肯定。 ‎ ‎ It’s too late. I think he may have gone to bed.‎ 太晚了，我想他可能已经睡觉了。‎ ‎ He may/might not have finished the work.‎ 他可能没有完成工作。‎ 5‎ ‎6. could(不用can)+have done,在肯定句中表示“本来能够…而没能…”，具有婉转的批评和责备之意。‎ ‎ I could have passed my exam easily, but I made too many stupid mistakes.‎ ‎ 我本来能够轻易通过考试，但我犯了太多不该 犯的错误。‎ You could have reported to me earlier.‎ ‎ 你本该早点告诉我的。‎ ‎7. should/ought to+have done用于肯定句时，表示“本该做某事而实际上没做”，用于否定句时，则表示“不该做的事反而做了”。‎ You should have told him a week ago.‎ 你本来应该在一周前告诉他的。‎ You ought not to have taken the magazine out of the reading room.‎ 他不该、把杂志带出阅览室的。‎ ‎8. might（不用may）+have done表示“本来可能…”，但实际上没有发生的事。另外，还可表示“本来应该或可以做某事”之意，含有轻微的责备语气。‎ You might not have told her.‎ 你本可以不告诉他的。（事实上你告诉他了）‎ ‎ You might have come earlier.‎ 你本可以早点来的。（但没有这样）‎ She needn’t have gone to the station yesterday.‎ 昨天她本不必到火车站去的.（昨天她去了）‎ You needn’t have bought it.‎ 你本可不必买它的。 （你买了）‎ ‎【当堂达标】‎ ‎1. I thought you _____like something to read, so ‎ ‎ I have brought you some books. ‎ ‎ A. may B. might C. would D. must ‎ ‎2. Where is my pen? I ____it. ‎ ‎ A. might lose B. would have lost ‎ ‎ C. should have lost D. must have lost ‎3. I didn’t hear the phone. I ___asleep ‎ A. must be B. must have been ‎ ‎ C. should be D. should have been ‎4. ---There were already five people in the car, ‎ ‎ but they managed to take me as well.‎ ‎ ----It ____a comfortable journey ‎ A. can’t be B. shouldn’t be ‎ ‎ C. mustn’t have been D. couldn’t have been ‎ ‎5. It’s nearly seven o’clock . Jack ___be here at ‎ any moment.‎ 5‎ ‎ A. must B. need C. should D. could ‎【反思提升】‎ ‎1.Oh, I’m not feeling well in the stomach. I ____ so much fried chicken just now.‎ A. shouldn’t eat B. shouldn’t have eaten ‎ C. mustn’t eat D. mustn’t have eaten ‎2.---Why hasn’t Jane arrived yet?‎ ‎ ---She ____ again in the morning?‎ A. shouldn’t have overslept ‎ B. may have turned off the alarm clock C. must have no one t o call her D. should have someone to wake her up ‎3.---Did you go to the movie the day before yesterday?‎ ‎ ----No. We ___, but we decided not to.‎ A.should have gone B. could go ‎ C. should go D. could have gone ‎4.As it turned out to be a small house party, we ____ so formally.‎ A. needn’t dress ‎ B. didn’t have to dress up C. Might not have dressed up ‎ D. needn’t have dressed up ‎5.I’m rather surprised you haven’t reported him to your teacher. In my opinion, you ___ this as soon as you found out he was cheating.‎ A. ‎ must have done B. might have done ‎ C. should have done D. could have done ‎ ‎【拓展延伸】‎ ‎1.---What ____ it be?‎ ‎ ---It ____ be a mail box, for it is moving. It ___ be a car.‎ A. can; can’t; must B. can; can; must C. can; mustn’t; must D. must; mustn’t can ‎ ‎2. ---Isn’t that Ann’s husband over there?‎ ‎ ---No. it ____ be him---I’m sure he doesn’t wear glasses.‎ A.can’t B. must not C. wont D, may not ‎3.---When can I come for the photos? I need them tomorrow afternoon.‎ ‎ ---They ____ be ready by 12:00.‎ A. can B. should C. might D. need ‎4.---are you coming to Jeff’s party?‎ ‎ ---I’m not sure. I ___ go to the concert instead.‎ A. must B. would C. should D. might ‎ 5‎ 5‎