新概念英语第二册Lesson17PPT课件

1、Review What did we learn last week?第1页/共60页Can you answer these questions?1)What does Aunt Jennifer do and how old is she?My aunt Jennifer is an actress and She must be at least thirty-five years old.2) What part does Jennifer often act on the stage? She often appears on the stage as a young girl. 3

2、) What does she think of being grown up? It must be terrible to be grown up第2页/共60页年龄的两种表示方法：数字+yearsold，作表语thirty-fiveyearsold三十五岁数字+-year-old，作定语myfour-year-olddaughterMy aunt Jennifer is an actress. She must be at least thirty-five years old.第3页/共60页以-ess结尾的是女性；以-or、-er结尾的是男性actor 男演员 actress 女演员

3、waiter 男服务员waitress 女服务员prince 王子princess 公主lion 公狮子 lioness 母狮子doctor男医生womandoctor女医生god神goddess女神(God上帝,注意“G”大写) 第4页/共60页must+动词原形不得不,必须；(对现在的)推测Shemustbeamodel.Sheisfifteenyearsold.她五岁了Shemustbefifteenyearsold.她很可能五岁Shemustbeatmostfifteenyearsold.她最多十五岁Shemustbeatleastfifteenyearsold.她至少十五岁atlea

4、st至少,最少Ifyoucantcleanthecar,youcanatleasthelpmetocleanit.atmost最多第5页/共60页In spite of this, she often appears onthe stage as a young girl.inspiteof不管，尽管(“of”为介词,后面一定会加名词、代词或从句)inspiteofthis尽管如此Inspiteofthis,Istilllikeschool.（school前不加“the”表示上学，加“the”只表示学校）Inspiteofwhatyouhavesaidabouther,sheismuchbet

5、terthanMary. 第6页/共60页 in spite of 不顾；不管in spite of + n. =despite(prep. )+n. 尽管in spite of the fact that. . . (同位语从句)=(al)though+从句尽管第7页/共60页We went out in spite of/despite the rain. 尽管天下雨，我们还是出去了。In spite of the fact that doctors have warned that smoking does harm to health, people still keep on smo

6、king. 尽管医生已经警告说吸烟有害健康，人们还是继续吸烟。_ _ _ great efforts we failed to carry our plans through. 尽管我们做出了巨大努力, 我们还是没能完成计划。In spite of第8页/共60页In spite of I worked hard, I still failed. （改错）答案：答案：of后加后加“the fact that”或者把或者把“I worked hard”改为改为“my hard work”。【点津】 in spite of为介词短语，与介词despite及regardless of一样，其后可跟名

7、词、动名词及其他短语，意义基本相同，但regardless of 只有“不管，不顾”之意。though, although也有“虽然，尽管”之意，但它们是连词，后面应接句子。 第9页/共60页Jennifer will have to take part in a new play soon.join 参加了某一种团体 join sb./sth.join the army 参军join the party 入党join us (口语)加入我们(这个团体)中来take part in 参加某一种活动take part in the race 参加比赛take part in a playtake

8、 part in the party第10页/共60页This time, she will be a girl ofseventeen.两种年龄的表达：Sheiseighteenyearsold.Sheisagirlofeighteen.第11页/共60页In the play, she must appear in a bright red dress and long black stockings.in (+颜色、衣服) 穿着样的衣服，用介词短语取代动词，避免了一句话中出现两个动词The boy in green.in a bright red dress 鲜红色的连衣裙第12页/共6

9、0页Last year in another play,she had to wear short socks and a bright, orange-coloured dress.bright, orange-coloured dress 鲜艳的桔黄色衣服 第13页/共60页If anyone ever asks her how old she is, shealways answers, Darling, it must be terrible to be grown up!ever = at any time 任何时候(时间副词)it must be 一定(表示推测)grown-up

10、adj. 成年人be grown-up 作为一个成年人grow up (人)成长当有人问你年龄时，你可以这样回答：It is a secret. / It is privacy.I forget it. 第14页/共60页情态助动词mustMust译为“必须”，可以表示“必要，命令或强制，邀请，决心，不可推卸的责任”等多处含义。它没有时态和人称变化，通常只用于现在时和将来时。在其他时态时，must的有些含义可以用have to或have got to。这三种形式一般可以互换，但用于第一人称时，have to(have got to)强调客观的要求或外在的原因，must则强调主观的要求或表示说话

11、的人认为自己有权做某事。 haveto和havegotto往往可以互换，但与always，sometimes等频度副词连用时，用haveto往往比用havtgotto好。havegotto比haveto更口语化。 第15页/共60页在过去时的句子中,要用haveto来表示“必须”，haveto可以有任意时态Shewillhaveto；Shehadto；Shehas/Ihavehadtohaveto作为实义动词,否定式为donthaveto；willnothaveto；didnthaveto在表达“难道你不能不（做）”时，一般用“Mustyou?”，而不用“Doyouhaveto?”Mustyo

12、uleavenow?难道你非得现在就走吗？Imafraidso.Ihavetostudyforanexam.must可以表示推测，mustdo表示对现在的推测；musthavedone表示对过去的推测Hemustbemad.第16页/共60页在Ithink/hethinks的从句中，一定要用事实说话.(不能说成“Ithinkhemustbeafool.”)mustbe的否定式为cantbe（不可能）：Someonesusingthephone,itmustbeJohn.ItcantbeJohn.Hepromisedmehewouldntuseittoday. 第17页/共60页 情态动词mod

13、alverbs第18页/共60页1.-Is John coming by train? -He should, but he _ not. He likes driving his car. (2002） A. must B. can C. need D. may2.It has been announced that candidates(候选人) _ remain in their seats until all the papers have been collected. (2002） A. can B.will C. may D. shall3.-I heard they went

14、skiing in the mountains last winter. (2002） -It _ true because there was little snow there. A. may not be B. wont be C. couldnt be D. mustnt be第19页/共60页表示推测表示推测情态动词的重要用法情态动词的重要用法. .肯定的推测可能的推测否定的推测疑问的推测must 对将来 对现在 对过去情态动词may, might cant, couldntcan, could + V. + V. + have done常见must be + be doing +

15、V. + V. + have done + be doing 可以用not表示“可能不” +V. + V. + have done + be doing+ V. + V. + have done + be doing第20页/共60页 1. I dont know where she is, she _ be in Wuhan. 2. At this moment, our teacher _ our exam papers. 这时，我们老师想必在批改试卷。 3. The road is wet. It _ last night. (rain) 4. Your mother _ for you

16、.你妈妈一定一直在找你。 maymust be markingmust have rainedmust have been looking第21页/共60页5. Philip _ seriously in the car accident. 菲利普可能在车祸中受了重伤.6. -Linda has gone to work, but her bicycle is still here.-She _ (go) by bus.7. Mike _ his car, for he came to work by bus this morning.迈克一定还没有找回他的车，因为早上他是坐 公共汽车来上班的

17、。may (might) have been hurtmay (might) have gonecant have found第22页/共60页考题: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 lost3. I didnt hear the

18、 phone. I _asleep A. must be B. must have been C. should be D. should have beenB D B 第23页/共60页4. -There were already five people in the car, but they managed to take me as well. -It _a comfortable journey A. cant be B. shouldnt be C. mustnt have been D. couldnt have been 5. Its nearly seven oclock .

19、 Jack _be here at any moment. A. must B. need C. should D. could D D 第24页/共60页请把下列词语组合成句:1. _, ( play, interesting, must, be, new, the ) for the director is so famous.2. See how happy he is today! _ _. ( failed, he, cant, in, the, have, exam )3. Peter isnt in the classroom. _ _. ( may, playing, he,

20、with, be, his, basketball, friends ) The new play must be interesting He cant have failed in the exam He may beplaying basketball with his friends第25页/共60页不同的“肯定”程度可按下列层次排列： He is at home. (事实) He must be at home.（非常肯定的推断） He could be at home.（很可能） He ought to be at home.（很可能） He may be at home.（仅仅可

21、能而已） He might be at home.（或许, 非常不确定） He might not be at home.（也许不在家）He may not be at home. （比might可能） He couldnt be at home.（很可能不在家） He cant be at home.（一定不在家）He isnt at home.（事实） 第26页/共60页在不表示推测的情态动词中, 我们要注意以下考点:1. 表示能力、许可的情态动词的用法。2. 表示否定的情态动词的用法。3. shall 和 will 的多种意义的区别。4. 情态动词短语的使用。5. 虚拟语气中情态动词的使

22、用。第27页/共60页 表示能力: can, could, be able to *be able to 能用于各种时态。 can / could 只能表示现在或过去的能力。 *was / were able to : “设法做成某事” 相当于 managed to do sth. succeeded in doing sth.。1. 表示能力、许可的情态动词的用法。第28页/共60页1. A computer _ think for itself; it must be told what to do. A. cant B. couldnt C. may not D. might not2.

23、 The fire spread through the hotel very quickly but everyone _ get out. A. had to B. would C. could D. was able toA D 第29页/共60页3. They will _ run this machine on theirown in three months.A. can B. could C. may D. be able to4. That big cinema _ seat 2,000 people.A. can B. should C. ought to D. is abl

24、e toD A 第30页/共60页表示许可: may / might, can / could * might, could 比较委婉, 一般多用于疑问句.* can, may 表达的语言比较随便.* 在以could, might 表示征询对方意见 或表示请求时，回答应相应使用can, may.第31页/共60页5. Could I borrow your dictionary? Yes, of course you _. A. might B. will C. can D. should6. Might I watch TV after supper? Yes, you _. A. may

25、B. must C. might D. canC A 第32页/共60页2. 表示否定的情态动词的用法: 部分情态动词的否定式是情态动词中的考点之一。 mustnt 不准, 禁止 neednt 没必要 ( = dont have to )cant 不能; 不可能may not 不可以; 可能不shouldnt 不应该 ( = ought not to )第33页/共60页7. You _ return the book now. You can keep it till next week if you like. A. cant B. mustnt C. neednt D. may not8

26、. Johnny, you _ play with the knife, you _ hurt yourself. A. wont ; cant B. mustnt ; may C. shouldnt ; must D. cant ; shouldntC B 第34页/共60页9. -Will you stay for lunch? -Sorry, _. My brother is coming to see me. A. I mustnt B. I cant C. I neednt D. I wont10. -May I pick a flower in the garden? - _. A

27、. No, you neednt B. Not, please. C. No, you mustnt D. No, you wontB C 第35页/共60页情态动词：shall, will 的多种意义: shall / will+ 动词原形: * shall 可表示必须、命令、 警告或征询意见. * will 可表示意愿、常出现的动作、在疑问句 中表示请求和建议.* 均可表示将来。 过去时为 should, would.3.第36页/共60页11. He _ be punished if he disobeys. 如果他不服从, 就要受到惩罚.12. We are not going to

28、quarrel at all if you _ only let me speak. 只要你让我说话, 我们根本就不会吵架.13. -Sir, _ he go or stay? -Let him go. A. will B. shall C. might D. couldshallwillB 第37页/共60页14. The door _ open. 这门经常打不开.15. Ronald _ stay in his small garden for a long time every day in the past. A. could B. might C. should D. would16

29、. You _ have the book after I read it. 我看完以后一定把这本书给你.wontD shall第38页/共60页4. 情态动词短语的使用:would like to dowould rather dowould rather + 从句would prefer to do.had better do.第39页/共60页改错:1. Would you like having some tea?2. Id prefer going to the lecture this evening.3. Id rather you to go to the meeting.4.

30、 He would rather to die than to give in.5. Youd better to have your hair cut today.Would you like to have some tea?Id prefer to go to . you went to .He would rather die than give in.Youd better have .第40页/共60页情态动词考题:1. Put on more clothes. You be feeling cold with only a shirt on. A. can B. could C.

31、 must D. would2. Must I drive to his house and pick up the children? No, . A. you shouldnt B. you might not C. you neednt D. you mustntC C 第41页/共60页3. We didnt see Tom at the meeting yesterday. He it. A. mustnt have attended B. cannot have attended C. neednt have attended D. would have not attended4

32、. We play chess than bridge. Some of us dont know how to play bridge. A. had better B. would better C. would rather D. had ratherB A 第42页/共60页5. There is someone knocking at the door. it be Tom? A. can B. must C. should D. ought to6. Two year ago, my husband bought me a bicycle. If you live in town,

33、 it is often faster than a car and you worry about parking. A. must not B. may not C. should not D. dont have toA D 第43页/共60页可兼做行为动词的情态动词：need 、 dare 情态动词 (+动词原形)行为动词 .needdare 1.1.无人称和数的变化无人称和数的变化; 2.2.尤其用于：尤其用于：* *否定句及疑问句中否定句及疑问句中; ;* *在在if/whetherif/whether之后之后; ;* *或与或与hardlyhardly, , nevernever

34、, , no oneno one, , nobodynobody连用连用; ; 3. 3.常以常以neednneednt t 和和darendarent t 的形式出现的形式出现; ;4.dare4.dare有其过去时有其过去时dareddared. . 多用于肯定句; (sb.) need to do dare to do(sth.) need to be done (sth.) need doing 第44页/共60页I darent ask her for a rise. 我不敢请求她加薪.How did you dare to tell her that? I wonder wheth

35、er he dare stand up in public. I dont know how she dares to wear that dress. Do you need any help?I wonder whether he need send it immediately.I need hardly tell you that the work is dangerous.The garden doesnt need watering at the moment.You neednt finish that work today.第45页/共60页判断正误: How dare you

36、 say such a thing? How dare you to say such a thing?He darent to speak English before such a crowd, did he?He darent speak English before such a crowd, dare he?第46页/共60页Nobody need to be afraid of catching the disease.Nobody need be afraid of catching the disease.These dishes need be cleaned careful

37、ly.These dishes need to be cleaned carefully.These dishes need cleaning carefully.第47页/共60页注意对need问句的回答: -Need I finish the work today? -Yes, _. No, _. No, _.you mustyou needntyou dont have to第48页/共60页neednt 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 _. neednt

38、(dont have to) neednt(dont have to)第49页/共60页表示推测表示推测情态动词的重要用法情态动词的重要用法. .1. You must be Mr Smith-I was told to expect you here.2. He must have known what we wanted.3. We may have read the same report.4. He cant have slept through all that noise.5. Theres someone outside-who can it be?6. What can the

39、y be doing?7. These pills might help to cure your disease.8. You could be right, I suppose.第50页/共60页 Exercises 1. A leftluggage office is a place where bags _be left for a short time, especially at a railway station.A. should B. can C. must D. will2. How _ you say that you really understand the whol

40、e story if you have covered only part of the article?A. can B. must C. need D. may3. - The room is so dirty._ we clean it? - Of course.A. Will B. Shall C. Would D. Do第51页/共60页4. My English-Chinese dictionary has disappeared. Who _ have taken it? A. should B. must C. could D. would5. - Is John coming

41、 by train? -He should, but he _ not. He likes driving his car.A. must B. can C. need D. may6. - I heard they went skiing in the mountains last winter. - It _ true because there was little snow there.A. may not be B. wont beC. couldnt be D. mustnt be第52页/共60页7. It has been announced that candidates _

42、 remain in their seats until all the paper have been collected.A. can B. will C. may D. shall8. - I hear youve got a set of valuable Australian coins._ I have a look? - Yes, certainly.A. Do B. May C. Shall D. Should9. Oh, Im not feeling well in the stomach, I _ so much fried chicken just now.A. shou

43、ldnt eat B. mustnt have eatenC. shouldnt have eaten D. mustnt eat第53页/共60页10.I was really anxious about you. You _ home without a word.A. mustnt leave B. shouldnt have leftC. couldnt have left D. neednt leave11. You cant imagine that a well-behaved gentlemen _ be so rude to a lady.A. might B. need C

44、. should D. would12. - Write to me when you get home. - _.A.I must B.I should C.I will D.I can13. Mr. Bush is on time for everything. How _it be that he was late for the opening ceremony?A. can B. should C. may D. must 第54页/共60页14. - Are you coming to Jeffs party? - Im not sure. I _ go to the concert instead.A. must