重庆大学版必修2Unit2 Learning from Helen Keller grammar(共39张PPT)

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名称 重庆大学版必修2Unit2 Learning from Helen Keller grammar(共39张PPT)
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更新时间 2015-03-20 22:03:16

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课件39张PPT。Modal Verbs (Ⅱ) Modal Verb + have doneGrammar语法讲解建议采用归纳法,如尽可能多的呈现一些相关例句,或可让学生从已学课文中找相应例句,引导学生试着从所观察到的语言现象中总结出语言规则和语法规律。A: Why is the road so wet?
B: It must have rained last night.
2) A: Where are the girls? Can they have
gone home?
B: No, they can’t have gone home. It’s
so early.Sentences from this unit:3) A; The lights are off in their room.
B: Where have they gone?
A: They might have gone to the
cinema.
4) A: Here’s a doll for your daughter.
B: Thank you so much. It’s
beautiful. But you needn’t have
bought it. You have bought so
many for her.
to test your sense of observation
to test your ability of short-term memory
to test your ability to highlight the language pointsGuessing Game A: Why is the road so wet?
B: It _______________(rain) last night.
2) A: Where are the girls? Can they have
gone home?
B: No, they ______________(go) home. It’s so early.Fill in the blanks.must have rainedcan’t have gone3) A; The lights are off in their room.
B: Where have they gone?
A: They _______________(go) to the
cinema.
4) A: Here’s a doll for your daughter.
B: Thank you so much. It’s
beautiful. But you __________________ (bring) it. You have bought so many for her.
needn’t have broughtmight have gonePractise1. According to the air traffic rules, you
______ switch off your mobile phone
boarding. (2008上海)
A. may B. can
C. would D. should
2. Thank you for all your hard work last
week. I don’t think we ______ it
without you. (2008山东)
A. can manage B. could have managed
C. could manage D. can have managed3. But for their help, we _________ the
program in time. (2009安徽)
A. can not finish
B. will not finish
C. had not finished
D. could not have finished
4. The doctor recommended that you
_______ swim after eating a large meal.
(2009浙江)
A. wouldn't B. couldn't
C. needn't D. shouldn't 5. — It’s the office! So you _______ know
eating is not allowed here.   
— Oh, sorry. (2009湖南)
  A. must B. will
C. may D. need
6. The traffic is heavy this day. I _______
arrive a bit late, so could you save
me a place? (2009辽宁)
A. can B. must
C. need D. might 以上我们已经通过归纳总结和练习对本课的语法内容有了一定的了解,下面就让我们根据
之前练习的考察情
况进一步选择讲解
该语法项的重难点。一、 “must+have+done”表示对过去事情的肯定推测,译成“一定做过某事”,该结构只用于肯定句。
1. The river is rising. It must have rained last night.
2. She looks very happy. She must have passed the exam.情态动词+have+done是历年高考的重点和难点之一,现将其用法总结归纳如下:二、 “can’t+have+done”表示对过去事情的否定推测,译成“不可能做过某事”。
—— I saw Mary in the library yesterday.
—— You can’t have seen her. She’s been abroad.
2. —— Do you know where David is? I couldn’t find him anywhere.
——Well, he can’t have gone far. His coat is still there.三、 “can+have+done”表示对过去行为的怀疑,用于疑问句,译成“可能做过……吗?”。
1. There is no light in the room. Can they have gone out?
屋里没有灯,他们可能出去了吗?
2. There is nowhere to find them. Where can they have gone?
到处找不到他们,他们可能到什么地方去呢?四、 “could+have+done”是虚拟语气,表示对过去事情的假设,意思是本来能够做某事而没有做。
1. Thank you for all your hard work last week. We don’t think we could have managed it without you.
2. Given more attention, the trees could have grown better.
五、 “may+have+done”表示对发生过的事情的推测,意思是“可能已经”或“也许已经”,用于肯定句中。
— What has happened to George?
— I don't know. He may have got lost.
— 乔治发生了什么事?
— 我不知道,他可能迷路了。
六、 “might+have+done”表示对过去事情的推测,might与may意思相同,但可能性更小。多用于虚拟语气结构中。
1. He might have given you more help, even though he was busy. (MET90)
他或许会多给你一些帮助,即使他很忙。
2. Mary might have learned some Chinese before.
 七、 “would+have+done”虚拟语气,表示对过去事情的假设,意思是“本来会做”。
1. I would have told you all about the boy's story, but you didn't ask me.
我本来会告诉你这个小男孩的故事,但是你没有问我。
2. Without your help, I wouldn't have achieved so much.
没有你的帮助,我是不会取得如此大的成绩。  八、 “should+have+done”意思是“本来应该做某事,而实际没做。” “shouldn’t+have+done”表示本来不应该做某事,而实际做了。含有指责对方或自责的含意。
1. You should have told her the truth earlier.
2. With so much work at hand, you shouldn’t have gone to the film last night.
手头有这么多工作要做,昨晚你本不该去看电影。  九、 “ought to+have+done”表示过去应该做而实际并没有做,译成“理应做……”,往往表示遗憾。与“should+have+done”用法基本一样。
1. I ought to have gone home last Sunday.
我理应上星期日回家。
2. You ought not to have given him more help.
你不应该帮助他那么多。十、 “need+have+done”表示本来需要做某事而没有做。“needn’t+have+done”则表示“本来不需要做某事而做了”。
There was plenty of time. She needn’t have worried.
有充足的时间,她没必要那么着急。
2. He need have hurried to the station. In that case, be wouldn't have missed the train.
他本来需要快点去车站,那样的话,他就不会误了火车。注:另附word文档,点此链接1. What do you mean, there are only ten
tickets? There _____ be twelve.
(2009全国I)
A. should B. would
C. will D. shall
2. — Hi, Tom. Any idea where Jane is?  
— She ________ in the classroom. I
saw her there just now. (2009重庆)
A. shall be B. should have been
C. must be D. might have been 3. Just be patient. You _____ expect the
world to change so soon. (2010全国I)
A. can’t B. needn’t
C. may not D. will not
4. — I haven’t got the reference book yet,
but I’ll have a test on the subject next
month.
— Don’t worry. You ______ have it by
Friday. (2010江苏)
A. could B. shall
C. must D. may 5. The weather turned out to be fine
yesterday. I _____ the trouble to carry
my umbrella with me. (2011 江西)
A should have taken
B could have taken
C needn’t have taken
D mustn’t have taken6. ——Why didn’t you come to Simon’s party last night?
—— I want to ,but my mom simply _________ not let me out so late at night.
(2011重庆)
A. could B. might
C. would D. should7. I told your friend how to get to the hotel, but perhaps I _____ have driven her there. (2010 陕西)
A. could B. must
C. night D. should8. It _____ have been Tom that parked the car here, as he is the only one with a car. (2009上海)
A. may B. can C. must D. should
9. But for their help, we _____ the program in time. (2009安徽)
A. can not finish
B. will not finish
C. had not finished
D. could not have finished10. We ______ the difficulty together, but why didn’t you tell me? (2012 北京)
A. should face B. might face
C. could have faced D. must have faced11. — Happy birthday!
— Thank you! It’s the best present I _______ for. (2012 江苏)
should have wished
B. must have wished
C. may have wished
D. could have wished 12. Since nobody gave him any help, he _____ have done the research on his own. (2013 新课标II)
A. can B. must C. would D. need13. Harry is feeling uncomfortable. He _______too much at the party last night. (2013 辽宁)
could drink
B. should drink
C. would have drunk
D. must have drunk14. The children lost in the woods; otherwise, they would have been at the lakeside camp as scheduled. (2013 陕西)
A. must have got B. must get C. should have got D. should get15. — Why are your eyes so red? You _______ have slept well last night.
— Yeah, I stayed up late writing a report. (2013 四川)
can’t B. mustn’t
C. needn’t D. won’t I _______________ (得接受) your
suggestion.
2. You _________________ (你不能来这儿)
without permission.
3. You _________________ (应当去照顾)
your brother.
4. I think you _________________ (应当去
看) the doctor. II. 汉译英。have to acceptmustn’t come hereshould take care ofought to go to see5. The teacher told the students that they
____________________________________
(不应该在课堂上沉默不语) all the time.
6. You ______________________ (就得不到
我的支持) if you do such a thing.
7. — I waited for the train for two hours at
the station this morning.
— Well, you ________________________
(本来没有必要那么早去的).
8. “You _____________________ (你千万不
要再喝酒了),” the doctor warned him.mustn’t drink any moreought not to / shouldn’t keep silent in classshall not get my supportneedn’t have set off so earlyReview“must+have+done”表示对过去事情的肯定推测
“can’t+have+done”表示对过去事情的否定推测
“could+have+done”是虚拟语气,本来能够做某事而没有做。“might+have+done”表示对过去事情的推测,多用于虚拟语气结构中
“would + have + done”虚拟语气,表示对过去事情的假设
“should+ have + done”意思是“本来应该做某事,而实际没做。
“needn’t+ have + done”则表示“本来不需要做某事而做了
Do the exercises on P19 in the book.HomeworkThank you!