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1、單擊此處編輯母版標題樣式,單擊此處編輯母版文本樣式,第二級,第三級,第四級,第五級,*,單擊此處編輯母版標題樣式,單擊此處編輯母版文本樣式,第二級,第三級,第四級,第五級,*,單擊此處編輯母版標題樣式,單擊此處編輯母版文本樣式,第二級,第三級,第四級,第五級,*,單擊此處編輯母版文本樣式,第二級,第三級,第四級,第五級,*,單擊此處編輯母版標題樣式,單擊此處編輯母版標題樣式,單擊此處編輯母版文本樣式,第二級,第三級,第四級,第五級,*,Grammar,Modal verbs,情態(tài)動詞,主要情態(tài)動詞,Can,could,May,might,Must/have to,Need,Dare,Will/

2、would,Shall/should/ought to,What,modal verbs,have you learned?,情態(tài)動詞的語法特征,1,）情態(tài)動詞不能單獨做謂語，除,ought,外，后面只能接不帶,to,的不定式。,2,）情態(tài)動詞沒有人稱，數(shù)的變化，但有些情態(tài)動詞，如,can,、,will,也有一般式和過去式的變化。,3,）情態(tài)動詞的“時態(tài)”形式并不是時間區(qū)別的主要標志，不少情況下，情態(tài)動詞的現(xiàn)在式形式和過去式形式都可用來表示現(xiàn)在時間、過去時間和將來時間。,1)Some of us can use the computer now,but we couldnt last year

3、.,2)The new-built theatre can seat 1500 people.,3)Can she be in the computer center?,4)I think what he said can not be true.,5)Can/Could I use your dictionary?,6)Could you lend me a hand?,1.,表能力,3.,表示“請求”“允許”,(,表請求時，口語中常用,could,代替,can,使語氣更委婉，回答時用,can),2.,表示推測，意為“可能”“或許”，用于疑問句或否定句,1.can,與,could,4.,表示

4、“許可”，可與,may,換用。,You can go home now.,5.can,用于疑問句或否定句中時，表驚異、,不相信等，意思是“可能、能夠”。,How can you say that you really understand the whole,story if you have covered only part of the article?,6.cant/couldnt+have+done,表示對過去,情況的否定推測,Susan cant have written a report like this.,could+have+done 表示對過去能做而,未做的事情感到惋惜，

5、遺憾;常譯為本可以,Its a pity.Your class could have got the first prize.,Michael _ be a policeman,for hes much too short.,A.neednt B.cant C.should D.may,2.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,3.-I stayed at a hotel while in New Y

6、ork.,-Oh,did you?You _ with Barbara.,A.could have stayed B.could stay,C.would stay D.must have stayed,My sister met him at the Grand Theater yesterday,afternoon,so he _ your lecture.,A.couldnt have attended B.neednt have attended,C.mustnt have attended D.shouldnt have attended,B,A,A,A,2.may,與,might,

7、1.表示“許可”或“請求”，有“可以”的意思，口語中,常用 might 代 may,表示委婉語氣。,否定回答時用,“,must not/can not”表“禁止，阻止”，,不用,“,may not,”,.“may not”表示“可能不”。,Eg:1)-May I watch TV after supper?,-Yes,you may./No,you mustnt.,2)Today is Sunday.She may not be in her office now.,2.,表示可能性。意為“或許，可能”,might,比,may,可能性小。,Eg:1)It might be true.,2)Th

8、ey may be in the library now.,3.May you+動詞原形 表“希望、祝愿、祈求”,“祝你”,Eg:May you success.,1.Sorry Im late.I _ have turned off,the alarm clock and gone back to sleep again.,A.might B.should,C.can D.will,2.Peter _ come with us tonight,but he isnt very sure yet.,A.must B.may,C.can D.will,3.Some people who dont

9、 like to talk much are not necessarily shy,；,they,just be quiet people.,A.must B.may,C.should D.would,3.will,與,would,1.,表“請求、建議”等，用,would,比用,will,委婉，客氣些,Eg:1)Will you lend me your book?,2)Would you like a cup of tea?,2.,用于表示意志或意愿。,will,指現(xiàn)在，,而,would,指 過去。,Eg:1)Ill never do that again.,2)They said tha

10、t they would help us.,3),No matter what I said,he wont listen to me.,3.,表示習慣性動作。譯作“總是、慣于”,will,指現(xiàn)在，,would,指過去。,Eg:1)He will often read all night.,2)Fish will die without water.,3)Every evening,she would sit by window,deep in thought.,4.,表示功能，譯作“能、行”,Eg:1)That will be all right.,2)This door wont open

11、.,1.The way the guests _ in the hotel influenced their evaluation of the service,treated B.were treated,C.would treat D.would be treated,What a pity.Considering his ability and experience,he _ better.,A.need have done B.must have done,C.can have done D.might have done,Liza _ well not want to go on t

12、he trip-she hates traveling.,A.will B.can C.must D.may,Although this _ sound like a simple task,great care is needed.,A.must B.may C.shall D.should,D,D,B,D,4.should,1.,用于表勸告、建議。意為”應該、應當”。,Eg:You should keep your promise.,2.,用于表推測。意為“可能、該,”,Eg:1)Its 7 oclock,he should be at home.,2)They should have a

13、rrived by now.,3.,用于第一人稱，表示說話人的謙遜、客氣的語氣,I should advise you not to do that.,1.I dont care what people think.,Well,you _,A.could B.would C.should D.might,2.What do you mean,there are only ten tickets?There_,be twelve.,A.should B.would,C.will D.shall,C,A,5.must,1.,表示義務或強烈的勸告，意為“必須”“應該”，,其否定式表示“不應該”“不許

14、可”“不準”“禁止”。,Eg:1)You must finish your homework first.,2)Children mustnt speak like that to their parents.,2.,回答,must,所在的一般疑問句時，否定回答用,“neednt”“dont have to”.,Eg:-Must we finish the work tomorrow?,-No,you neednt/dont have to,but you must,finish it in three days.,3.,表推測，用于肯定句，意為“一定”“務必”。,Eg:1)Betty mus

15、t be in the next room.,2)He must be watering the flowers in his garden.,Complete the following sentences using modal verbs.,Youve been working all day.You _ be very tired.,2.I wonder who that is.It _ be Lisa.Shes in the library at this time.,3.It is a long time since we met last time.You _ come and

16、see us more often.,4.I havent decided where Im going for my holidays.I _ go to Australia.,must,cant,should,may,5.-Who was the man talking with your,teacher?,-Im not sure.It _ be her brother.,6.I dont know when the guests be here.They,_ arrive at any time.,might,will/could,As he had heart attack,he was told that he,_ continue the work.A.neednt B.may not C.mustnt D.cant,2.I _ like to make a suggestion.,A.could B.would C.must D.might,3.I know things are hard with you,but you _ try to get over the d