人教版高一英语Unit14 课件.ppt

,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Unit14,你 去睡一觉。,2.,你 邀请他。,3.,你 照你父母的话办。,4.,你 抽这么多的烟。,Youd better get some sleep.,Youd better not invite him.,You should do what your parents tell you.,You oughtnt to smoke so much.,最好,最好不,应该,不应该,必须,不许,不得不,不必要,You must get some sleep.,You mustnt invite him.,You have to do what your parents tell you.,You havent got to smoke so much.,Model verbs(),must,have to,have got to,must not/mustnt,dont have to,havent got to/hasnt got to,Must sb?,Do/Does sb.have to?,Have/Has sb.got to?,（必须、应当）,（必须、不得不）,表示义务、命令或必要，后接不带,to,的动词不定式。,Soldiers must obey orders.,We must keep our word.,2.must,用在否定句结构中表示,“,不允许、禁止”,He must not leave his room.,You mustnt smoke in the office.,3.must,用在一般疑问句中，肯定回答用,must,，否定回答用,neednt,或,dont have to,Must I hand it in before five?,No,you _.,Yes,you _.,neednt./dont have to,must,must的用法,have to和have got to 的用法,have to,由,have+to,组成。因此具有,have,的各种时态。,He is an invalid and has to have a nurse.,She knew what she had to do.,I shall have to reconsider my position.,He is always having to exercise,judgement,.,2.,在口语中，,have got to,也可以表示义务和需要，与,have to,基本同义。,He has got to go right now.,He hasnt got to go just yet.,must和have to的区别,含义不同：,must,表示说话人的主观思想，强调个人意志和主观的决心。,have to,侧重于客观上的必要，强调客观条件作用的结果。,You must do it now.,I have to go now.,3.,否定含义不同,在否定句中,have to,表示不需要，,must,则表示不允许。,You dont have to go there.,You mustnt go there.,2.,适用时态不同,must,只能用于一般现在时和一般过去时，（在间接引语中）,have to,可用于更多的场合。,She said she must do well in her English.,Exercises,Dont be late again.You _ be here on time.,A.may B.can C.must D.neednt,You _ do it even if you dont want to.,A.cant B.mustnt C.neednt D.have to,3.Must I take a bus?,No,you _.You can walk from here.,A.mustnt B.dont,C.don t have to D.had better not to,4.It is rather cold here.Shall we light a fire?,No,we _,because things here are easy to catch fire.,A.wont B.cant C.mustnt D.neednt,1.When traveling,you _ take care of your health.,2.In some parts of the world,you _ boil the water before drinking it.,3.If you have a stomach pain,you _ drink hot tea.,should/must,must/have to,should/ought to,4.You _ take this medicine,but your head may hurt less if you do so.,5.You_ swim immediately after a heavy meal.,6.You _not wake me up when you come in.,dont have to,should not/ought not to/must not,had better,homework,Page 13 exercise 2.,Page 79 exercise 1,2,3.,1.We _ for her because she never came.,A.neednt waitB.shouldnt have waited,C.mustnt wait D.mustnt have waited,2.Where is my pen?I _ it.,A.might lose B.would have lost,C.should have lost D.must have lost,3.,Janny,_ have kept her word.I wonder why she changed her mind.,A.mustB.should C.need D.would,B,D,B,4.We _ last night,but we went to the concert instead.,A.must have studiedB.might study,C.should have studied D.would study,5.I told Sally how to get here,but perhaps I _ for her.,A.had to write it out B.must have written it out,C.should have written it out,D.ought to write it out,6.Its nearly seven oclock.Jack_ be here at any moment.,A.must B.need C.should D.can,C,C,C,7.When can I come for the photos?I need them tomorrow afternoon.,They _ be ready by 12:00.,A.canB.should C.mightD.need,8.That young man had made so much noise that he _ not have been allowed to attend the concert.,A.could B.must C.would D.should,9,Be quick!They _ for us at the church gate right now.,A.must wait B.must have waited,C.must be waiting D.ought to wait,B,D,C,10.When the teacher speaks,we have to keep quiet,_?,A.havent we B.dont we,C.mustnt we D.oughtnt we,11,_ I go there at once.,No,I dont think you _.,A.Must;have to B.Do;need to,C.Need;must D.May;ought to,12.He _ you more help,even though he was very busy.,A.might have givenB.might give,C.may have givenD.may give,B,A,A,13.Peter _ come with us tonight,but he isnt very sure yet.,A.must B.may C.canD.will,14.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,15.Sorry,Im late.I _ have turned off the alarm clock and gone back to sleep again.,A.might B.should C.canD.will,B,D,A,16.Susan _ written a report like this.,A.can haveB.mustnt have,C.cant haveD.ought to not have,17.You _ walk for miles and miles among the hills without meeting people.,A.must B.may C.need D should,C,B,