高中情态动词用法课件

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,*,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,*,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,*,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,*,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,*,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,*,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,*,*,Grammar,_ _,Grammar_ _,1,First wealth is health.,Q1:What,should/shouldnt,we do to keep healthy?,Q2:What kind of food,must,we eat to be strong?,Q3:What,ought,we,to,eat to stay slim?,First wealth is heal,2,主要情态动词,Can,could,May,might,Must/have to,Need,Dare,Will/would,Shall/should/ought to,What,modal verbs,have you learned?,主要情态动词Can,could What modal ve,3,1.,情态动词有一定的意义，只表示,期待,或,估计,某事的发生，不能表示正在发生或已经发生的事情。,2.,没有人称和数的变化,，即情态动词第三人称单数不加,-s,。,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,will/would,相当于情态动词的,have to,情态动词的语法特征,1.情态动词有一定的意义，只表示期待或估计某事的发生，不能,4,情态动词,含义,否定式,注意点,must,表必要,“必须”,neednt,“不必”,(,区别,have to),有时表“,偏要,”,表推测,“一定”,cant,“不可能,”,只能,用于,肯定,句，,不能,用于,否定、疑问句,1.,must,&need&have to,情态动词含义否定式注意点表必要neednt(区别 hav,5,注意：,1)m,ust,表示推测时，只能用于,肯定句。,must do,对,一般时,的肯定推测,must have done,对,过去发生的事情,作出的肯定判断,must be doing,对,现在的动作,进行肯定推测,e.g.,他们买了一辆新车。他们一定很有钱,They have bought a new car.They,must have,a lot of money.,他现在一定在看小说,He,must be reading,novels now.,路是湿的。昨天晚上一定下雨了。,The road is wet.It,must have rained,last night.,注意：must do,6,-,Need,he start from the beginning?-Yes,he must.-No,he,neednt,/doesnt have to.,1.,作,情态动词,时,仅用于否定或疑问句,后接动词原形,表“需要”,2),need,You,neednt,return the book now,.,2.neednt have done,表示做了本不必要做的事情,意为“本不必要,”,Our color TV set is still good enough.You,neednt have bought,a new one.,3.,作,实义动词,时,表示“需要”，有人称、时态、和数的变化,He,needs,to finish it this evening.,The classroom,needs,cleaning.,-Need he start from the beg,7,4,注意对,need,问句的回答,:,-,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,4 注意对need问句的回答:you mustyou nee,8,情态动词,含义,否定式,注意点,can/could,表能力,“能/会”,cant,“不会，不能”,区别,be able to,表许可,“可以”,cant,“不可以，不许”,代替,may,表推测,“可能”,cant,“不可能”,主要用于,否定,/疑问句,中,1,表示某人通过努力克服困难做成某事,要用,was/were able to.,2,could,might,would,表委婉语气用于疑问句,答语仍须用,can,may,will.,3,can,用于肯定句中,可表示”,有时可能,”,2.,can/could,情态动词含义否定式 注意点表能力cant区别,9,4,.,can/could have done,“,本可以，本可能做某事,”用于,肯定句,中，表示对,过去发生的事情,做出的判断。,你本来可以考的更好。,You could have had a better mark.,5,.can/could not have done,对,过去发生,行为进行推测,:,不可能做某事,1),刚才我还看见他了，所以他不可能出国的。,I saw him just now so he couldnt have gone abroad.,2),门是锁着的，所以她不可能在家。,The door was locked,，,so she couldnt have been,at home.,4.can/could have done“本可以，本可,10,情态动词,含义,否定式,注 意 点,may/,might,表许可,“可以”,mustnt,“不许，严禁”,口语中也可用,cant,表推测,“可能”,cant,“不可能”,主要用于,肯定,句，,不能用在,疑问,句,（,may not 可能不）,3.,may/might,情态动词含义否定式 注 意 点表许可mus,11,注意：,might/may have done,表示对,过去发生的动作,进行可能性推测，,1,）他可能去医务室了。,He may have gone to the clinic.,2,）他可能已经从报纸上知道这个消息了。,He might have read about the news in the newspaper.,注意：1）他可能去医务室了。He may have gone,12,1.-,May,I use your pencil?,-Yes,you,may,./No,you,mustnt,.,2.She,may,not be working now.,3.John,might,be at home now.,4.Helen,may,go on the trip with us,but she isnt very,sure yet.,5,.,She,may/might have read,it in the paper.,6.He,may not have finished,reading the book.,1.-May I use your pencil?2.,13,情态动词,用 法,will,表请求,(第二人称),表意志,意愿,表某种倾向或习惯,would,更客气的,请求,过去的意志（愿）,过去的倾向或习惯,4.,will/would,情态动词 用 法wi,14,情态动词,用 法,shall,征求对方意见,(第一,三人称),表示命令,警告,威胁或允诺(第二,三人称),should/,ought to,表示劝告,建议,命令或责任,“应该,必须”,表示推测,“理应,估计,大概,可望”,should,还可表示,“竟然”,5.shall,should,和,ought to,情态动词 用 法shall,15,You,shall,do as I say.(,命令,),1.,在陈述句中,shall,用于二、三人称表示允诺、警告、命令、决心等。,Shall,I open the window for you,？（征求意见）,2.,在疑问句中,用于一、三人称，用来表示请求或征求意见。,注意：,Tell him that he,shall,have the book tomorrow.(,允诺,),Nothing,shall,stop me doing it.(,决心,),Shall,he fetch some water for you,？（请求）,You shall do as I say.(命令)1.,16,Young people,should,learn how to use computers.,3.should,常表示劝告、建议、命令，与,ought to,意义相近，但,ought to,多表示责任、义务，语气强烈。,Every citizen,ought to,obey law.,You,ought not to,go.,You,should/ought to have told,her the truth earlier,.,She,shouldnt have left,without saying a word,.,4.,should/ought to have done,表示责备或批评,意为“本应该,但”,ought to,的语气更强烈,用于否定则表示“本不该,但”,5.Should,用于可能性推测时,表“应该，很可能”,They left at 5:30.They,should,get there now.,Young people should learn how,17,1.,作为,情态动词,用，常用在,否定句,和,疑问句,中,。,Dare(need)+S+V,S+darent(neednt)+V,I darent walk through the forest at night.,Dare you walk through the forest at night?,You neednt return the book now.,Need he go yesterday?,6,.,可兼做行为动词的情态动词：,need,、,dare,1.作为情态动词用，常用在否定句和疑问句中。Dare(ne,18,判断正误,:,How,dare you 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?,判断正误:How dare you say,19,Nobody need to be,afraid of catching the disease.,Nobody need be,afraid of catching the disease,.,Nobody need to be afraid of ca,20,2.,作,实义动词,用，常用在,肯定句,中,有人称、时态、和数的变化,He needs to go there himself.,He has grown up,so,we dont need to worry about him.,3.Sth(sb)need(want,request)+doing/to be done,The house needs cleaning/to be cleaned,The boy needs sending to the hospital at once.,2.作实义动词用，常用在肯定句中,有人称、时态、和数的变化,21,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,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,表示推测情态动词的重要用法肯定的推测must,22,Exercises,Exercises,23,I.Try to explain the meanings of the modal verbs in the following sentences.,1.He,can,speak English well.,2.You,can,go home now.,3.That,cant,be true.,4.,Could,you please show me the way to Beihai Park?,5.They hunters are lost.They,could,starve.,6.,May,I come in?,7.He,may,give you some help?,ability,permission,guessing,request,possibility,permission,possibility,I.Try to explain the meanings,24,8,.Dont worry.I,will,help you.,9.Often he,would,dress up like a rich man.,10.,Would,you like to join us for dinner?,You,shall,have the ticket as soon as I get it.,You,should,arrive at the airport two hours before he goes.,It is five oclock.He,should,turn up soon.,Wang Feng wins an award every year.He,must,be strong.,promise,past habit,request,promise,prediction,advice,guessing,8.Dont worry.I will help you,25,2.,用情态动词完成句子,1).Youve been working all day.You_ be very tired.,2).(The doorbell rings)I wonder who that is.It _ be Lisa.Shes still in the library at this time.,3).It is a long time since we met last time.You _ come and see us more often.,must,cant,should,2.用情态动词完成句子mustcantshould,26,4.I havent decided where Im going for my holidays.I _ go to Australia.,5.My fathers birthday is ccoming.What _ I give him?,6.Why dont you try on this dress?It _ look nice on you.,may,shall,will,4.I havent decided where Im,27,7.“Who was the man talking with your teacher?”“Im not sure.It _ be her brother.”,8.I dont know when the guests _be,here.They _arrive at any time.,might,will,could,7.“Who was the man talking wi,28,3.,完成下列句子：,1.I don,t know where she is,she _.,(,可能在武汉）,(be),2.At this moment,our teacher _,（想必在批改）,our exam papers.(mark/grade),3.The road is wet.It _(,一定下雨了）,last night.(rain),4.Your mother _,（一定一直在找你）,(look),may be in Wuhan,grading,must be marking,must have rained,must have been looking for you.,3.完成下列句子：may be in Wuhan,29,5.Philip _ seriously in,the car accident.(,可能受了重伤,).(hurt),6.-Linda has gone to work,but her bicycle is,still here.,-She _(,可能走了,)by bus.(go),7.Mike _(,一定还没有找回,)his car,for he came to work by bus this morning.,may(might)have been hurt,may(might)have gone,cant have found,4.Multiple-choice,5.Philip _,30,1.Isn,t that Ann,s husband over there?,No,it _ be him.I,m sure he doesn,t wear glasses.,(04,全国,I 29),A.can,t B.must not C.won,t D.may not,2.I,ll tell Mary about her new job tomorrow.,You _ her last week.(04,福建,32),A.ought to tell,B.would have told,C.must tell,D.should have told,3.I often see lights in that empty house.Do you think I _,report it to the police?(04,广西,21),A.should B.may C.will D.can,4.Mr.White _ at 8:30 for the meeting,but he didn,t,show,up.(04,广西,27),A.should have arrived B.should arrive,C.should have had arrived D.should be arriving,5.Excuse me.Is this the right way to the Summer Palace?,Sorry,I am not sure.But it _ be.(04,湖北,26),A.might B.will C.must D.can,1.Isnt that Anns husband o,31,6.,Excuse me,but I want to use your computer to type a report.,You _ have my computer if you dont take care of it.,(04,湖南,28),A.shant B.might not C.neednt D.shouldnt,7.I dont mind telling you what I know.,You _.Im not asking you for it.(04,江苏,22),A.mustnt B.may not C.cant D.needn,t,8.Mum,I,ve been studying English since 8 o,clock._ I go out,and play with Tom for a while?,No,I,m afraid not.Besides,it,s raining outside now.(04,辽宁,29),A.Can,t B.Wouldn,t C.May not D.Won,t,9.You _ be tired youve only been working for an hour.,(04,全国,II 29),A.must not B.wont C.cant D.may not,10.Children under 12 years of age in that country _ be under,adult supervision when in a public library.(04,上海,28),A.must B.may C.can D.need,6.Excuse me,but I want to u,32,11.Who is the girl standing over there?,Well,if you _ know,her name is Mabel.(04,天津,31),A.may B.can C.must D.shall,12.I _ pay Tracy a visit,but I am not sure whether I will,have time this Sunday.(04,浙江,26),A.should B.might C.would D.could,13.,“,The interest,_,be divided into five parts,according to,the agreement made by both sides,”,declared the judge.,(04,重庆,24),A.may,B.should,C.must,D.shall,14.He paid for a seat,when he _ have entered free.,(05,年山东,34),A.could B.would C.must D.need,15.He _ have completed his work;otherwise,he wouldn,t,be enjoying himself by the seaside.(05,年北京,26),A.should B.must C.wouldn,t D.can,t,11.Who is the girl standing,33,经常不断地学习,你就什么都知道。你知道得越多,你就越有力量,Study Constantly,And You Will Know Everything.The More You Know,The More Powerful You Will Be,写在最后,经常不断地学习,你就什么都知道。你知道得越多,你就越有力量写,34,感谢聆听,不足之处请大家批评指导,Please Criticize And Guide The Shortcomings,结束语,讲师：,XXXXXX,XX,年,XX,月,XX,日,感谢聆听结束语讲师：XXXXXX,35,