1、I Want To Be With You,There are things that _ be doneThat are not yet begunThings that I _ doWhen I want to be with youAlthough we _ be far apartYou _ be with be in my heartNo one else _ doI just want to be with youI want to be with you _ you hear me?I need you near meI want to be with youI need you
2、 near me, my love,must,must,will,will,will,Cant,The two of us _ be oneMother of my son No one else _ doI just want to be with you I want to be with you_ you hear me?I need you near meI want to be with youI need you near me, my love,will,must,Can,Discovering useful structures - Modal Verbs,Modal verb
3、s,can, couldmay, mightmust/have toneeddarewill/wouldshall/should/ought to,1. 情态动词有一定的意义,表示或暗示某种情绪或态度, 可能、建议、愿望、必要、允许、能力等。2. 没有人称和数的变化.3. 不能独立使用，它和后面的动词构成谓语。4. 情态动词除ought和have外，后面只能接动词原形5. 情态动词没有非谓语形式，即没有不定式，分词等形式。,只作情态动词的 can/could, may/might, ought to, must,可情态可实义的 need, dare,可情态可助动词的shall/should,
4、will/would,相当于情态动词的have to,Features,Functions of Modal Verbs,AbilityAdviceAgreementGuessingPast habitNecessity,PermissionPossibilityPredictionPromiseRequest intention,1. Then usually by lunchtime they would all be sold. 2. What could have happened?3. Nothing could be better 4. Something terrible mus
5、t have happened if 5. He could not believe his eyes.6. Perhaps he should go to the library and find out.7. He couldnt have Yong getting away with telling lies!7. He had better do some research!8. Her customers might get thin after eating the food. 9. They would become tired very quickly.10. he could
6、 win his customers back.,Read and discover,(1)表示能力(ability)Can you speak Japanese?She could play the piano when she was 6. *be able to The girl will be able to speak English well in a few months.I could swim when I was only 6.,1. can /could,(2) 表示允许(许可或请求许可） (permission /request)-Can/ Could I go now
7、?-You can go now, but he cant.,(3)表一时或客观的可能性（肯定句）常用can ”有时会.”It can be quite cold here in winter.Children can be naughty.Tom is a pleasant boy. But he can be tough sometimes.,(4)表推测时can ,could常用在否，疑问句中）A: Someone is coming! Who can it be?B: It cant be John，for he has gone to the airport. C:Well. It
8、couldnt be him.,Conclusion 1,Can/ could(1)表示能力(ability)(2) 表示许可或请求（许可)(3)表示客观上的可能或一时的可能性(肯定句)(4)推测(guessing )（can， could限于否定句，疑问句）,could可表示能力或可能性，多用于过去，也可指现在，通常表示虚拟或作为can的委婉形式。,Tips,1. “cannottoo”“cant. .enough“无论怎么也不（过分）”。You cannot be too careful.You can never be careful enough.你越小心越好。2. “cannot (
9、help) but+ do sth（不带to）” “不得不，只好”。I cannot but admire her determination.我不得不钦佩你的决心。,2. may/ might,(1) 表示请求、许可(request or permission) - May/Might I ask you a question?- Yes, you may. / Yes, you can./ Yes, please.- No, you cant./ No, you mustnt.,(2) 表示愿望 (wish)May you be happy all your life.May God bl
10、ess you!May he succeed.May sb do ()!,(3)表示推测(possibility), 多用于肯定句和否定句,might比may可能性更小It may/ may not be true. 可能不It cant be true.不可能He might/ might not come today.,Conclusion 2,may/ might(1) 表示请求、许可(request or permission) (2) 表示愿望 (wish)(3)表示推测(possibility), 多用于肯定句和否定句，might比may可能性更小Tips may as well或
11、 might (just)as well+do sth” “最好, 倒不如”，相当于“had better”.may well do sth ”很有可能”There is nothing to do, so I may as well go to bed.He may well feel proud of his daughter.,3. will/ would,(1) 表示请求、建议等 (request，advice etc)Will you (please) help me with my English?Would you (please) pass me the book?,(2)表示
12、意愿，决心等。（willingness）will表示现在的意愿，would表示过去的意愿。“会，愿意”Go where you will. She asked if I would go with them.I will never do that again.No matter what I said, he wont listen to me.,(3) 表示习惯, 倾向性, 固有性质。(habit,tendency.常用于肯定句中)will表示现在的习惯，would表示过去的习惯(=used to do)。Oil will float on water. Every day he will
13、 sit there doing nothing. When he was a child, he would often go skiing.*used to do（表对比且不和具体时间状语连用）He used to live in Paris, but now he lives in Beijing.,(4)主语是物,表示能力,功能。“能，行” (多用于否定句中)The door wont open. The pen wont write.It doesnt work.,Conclusion 3,will/ would （一般不表推测）(1) 表示请求、建议等 (request，advic
14、e etc)(2)表示意愿，决心等（willingness) “会，愿意”(3) 表示习惯, 倾向性, 固有性质。will表示现在的习惯，would表示过去的习惯(=used to do)。（肯定句）(4)表示物的能力、属性。“能”,主语通常是物。（否定句）(5) Would 在虚拟语气的使用。(6) would like/love (to do) sth,4. Shall （一般不表推测）,(1)用于第一、第三人称的疑问句，表征求对方意见或请示 (advice，permission)Shall we go out and have a picnic?When shall he be able
15、 to leave the hospital?,(2)用于第二、第三人称的陈述句，表说话人的命令、警告、允诺、威胁等强烈意志和决心 (determination)You shall fail if you dont work harder.He shall have the book when I finish reading.Dont go anywhere else without my permission. You shall go with me.,（3）表示强制，用于法令、条约、规章中， “必须，应该”。. Candidates shall remain in their seat
16、s until all the papers have been collected.,Conclusion 4,shall （不表推测） (1)用于第一、第三人称的疑问句，表征求对方意见或请示 (advice，permission)(2)用于第二、第三人称的陈述句，表说话人的命令、警告、允诺、威胁等语气 (order, warning, promise, threat)（3）*表示强制，用于法令、条约、规章中，意为“必须，应该”。,should,(1)表劝告、建议、命令 (advice，order，duty)（=ought to）You should go to the class righ
17、t now.,(2)表惋惜、忧虑、诧异等感情色彩（emotion）“居然，竟然”Its strange that the monitor should be late today. I dont know why you should think that I did it. 疑问句，感叹句中How should I know?Why should you be so rude today?,(3)表推测,”应该，理应当.,据估计.”Its 5 oclock. The dinner should be ready.They should have arrived by now.,(4)表婉转语
18、气（politeness），与say，think，advise等搭配I should advise you not to do that.I should say your homework is not satisfying enough.,Conclusion 5,Should(1)表劝告、建议、命令 (advice，order, duty)（=ought to）(2)表惋惜、忧虑、诧异等感情色彩（emotion） “居然，竟然”(3)表推测,”应该，理应当”(4)表婉转语气（politeness），与say，think，advise等搭配（5）should在虚拟语气中的使用 （建议，坚持
19、，要求，命令）,5. must,(1)表示“必须，应该”之意(necessity) ，语气比should，ought to 强烈。mustnt表示“不准，不应该，禁止”等Everybody must obey the law.You mustnt drive so fast in the street.,mustnt,- Must I stand here talking to you?- Yes, _- No, _,you must,you neednt / you dont have to,*have toI must do my homework now.I have to do my
20、homework every day.,(2)意为”偏偏“，”非要“，多指令人不快的事The car must break down when everything didnt go well.- How old are you, madam? - If you must know, Im twice my sons age.,(3)表有把握的推测,不用在否定句中。 ”一定，准是”，只用肯定形式must- Listen! The rat must be biting the wall. Now there must be a hole in the wall.- Oh, no! The foo
21、d is missing! The rat must have come into the room!,“应该”，to不能省略。oughtto没有人称和数的变化，可以表示现在、将来或过去将来，由时间状语或上下文决定。Theyoughttocometomorrow. Hethoughtthattheyoughttotakepartinthe design.,6. ought to,Heoughtnottodoit.= Heoughtnttodoit. Oughtwetodoitatonce?Heoughttobehere,shouldnthe?Heoughttobehere,oughtnthe?
22、,(1)意为”应该”， 表示责任、义务、劝告、建议、命令，与should意义相近，但ought to语气强烈。反映客观情况或涉及法律义务和规定时一般用 ought to,Young people should learn how to use computers.,Every citizen ought to obey law.,According to the law, you ought to help him get a good education as you are his father.,(2) 表猜测，“应该”，“理应”He must be home by now. (断定他已
23、到家)He ought to be home by now. (不十分肯定),need和dare情态动词，主要用于否定句和疑问句。实义动词，各种句式。 情态动词 +V原1) need Youneednttelephonehimnow. Need I telephone him now?2) dare Shedarenotgooutaloneatnight. HowdareyousayImunfair?,7. dare & need,Dare you tell her the truth?Yes,_. No,_.,I dare,I darent,用作实义动词 1) need Youdontnee
24、dtodoityourself. Do you need to do it yourself?A job like nursing needs patience and understanding.*need doing = need to be done,2) dare Only a few reporters dared to cover the story.He did not dare (to) look up. (肯定句中dare to do , 否定句中可以省略to)I dare say hell come again. （I dare say为固定习语）,注意对need问句的回答
25、: -Need I finish the work today? -Yes, _. No, _. No, _.,you must,you neednt,you dont have to,neednt 对其它情态动词的回答:-Shall I tell John about it?-No, you _.-No, you _.,-Must we do it now? -No, you _.-No, you _.,neednt,dont have to,neednt,dont have to,情态动词+have done 1-遗憾，责备（虚拟）,1. could/ might have done （限
26、肯定句）本能/可以做却 没有做2. Should (not) have done/ ought (not) to have done3. neednt have done 本不需要做却已经做了4. would (not) have done,1. can/ could (not) have done (疑问句、否定句)2. may/ might (not) have done3. must have done (肯定句）,情态动词+have done 2-推测,表示推测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
27、,cant, couldnt,can, could,+ V. + V. + have done常见must be + be doing,+ 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,Practice,- 我错拿了别人的字典。 -肯定是李磊的。他正在到处找呢。 Katie是一个信守诺言的女孩。她怎么可能把你的秘密告诉被别人呢/你不能把废纸扔在地板上。-你的外教怎么样？ -妈妈说不可能请到更好的了。 长期战争之后必然是贫穷
28、。 失败乃成功之母。你不妨振作起来再试一次。,- Ive taken someones dictionary by mistake. -It must be Lileis. He has been looking for his everywhere. Katie is a girl who keeps her word. How can/could she tell your secret to others. You mustnt leave waste paper on the floor.-How is your foreign teacher? -Mother couldnt hav
29、e asked for a better one. Poverty must follow after a long war. Failure is the mother of success. You may as well cheer up and have another try.,I _ use a clock to wake me up because at six oclock each morning the train comes by my house. A. couldnt B. mustnt C. shouldnt D. neednt2. The new law stat
30、es that people _ drive after drinking alcohol. A. wouldnt B. neednt C. wont D. mustnt,D,D,Practice,3. Its quite warm here; we _ turn the heating on yet. （2012天津高考） A. couldnt B. mustnt C. neednt D. wouldnt4. We _ have bought so much food now that Suzie wont be with us for dinner. （2012江西高考） A. may n
31、ot B. neednt C. cant D. mustnt,C,B,5. You _ your tooth pulled out before it rots completely. A. had better got B. had to get better C. had better to getD. had better get6. When we got to the cinema, the film hasnt started yet, so we _. A. neednt hurry B. didnt need hurry C. neednt to hurry D. neednt
32、 have hurried7. It was really very dangerous; you _ him seriously. A. might have injuredB. could injure C. should have injured D. must injure,D,D,A,8. As he had heart attack, he was told that he _ continue the work. A. neednt B. may not C. mustnt D. cant9. Two eyes _see more than one. A. canB. mayC.
33、 willD. should10. When I got to the cinema, the film had already started; I_ there earlier.A. ought to get B. ought to have got C. must have got D. must get,B,A,C,11. -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
34、be C. mustnt have been D. couldnt have been 12. Its nearly seven oclock. Jack _ be here at any moment. A. must B. need C. should D. could,D,C,13. -Did the train arrive in time? -No. It _ two hours ago. A. must have arrived B. ought to have arrived C. must arrive D. ought to arrive14. -Must I drive to his house and pick up the children? -No, . A. you shouldnt B. you might not C. you neednt D. you mustnt,B,C,Homework,1. Do some exercises about Modal Verbs. 2. Preview Unit 3,
