+情态动词和虚拟语气简明分析.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,*,专题五 情态动词和虚拟语气,一、表能力,(1)Im starving.I _ eat 2 bowls of rice now.,(2)If you have a good sleep,you _ work out this problem tomorrow.(,将来的能力）,(3)The fire spread very quickly but everyone _ get out.(,过去有具体的能力；成功的做了某事）,can,will be able to,was able to,二、表推测（可能性）,1.,表客观的、理论上的可能性,(,肯定句）,(1)Accidents,can,happen on such rainy days.,(2)He is a nice person in general,but he,can,be rather difficult.,Compare:,We,may,go to the cinema tonight,but we are not sure yet.,实际可能性不用,can,二、表推测（可能性）,2.,表具体事情发生的可能性,must,(,肯定句）,should/ought to(,不用于问句,),can,(,否定句,&,疑问句,),could,may(,不用于问句,),might(,不用于问句,),(1)My dry cleaning,should,be ready this afternoon.,(2),Can,this be done by him?,(3)He,must have,left town.I havent seen him for a while.,肯定句,否定句,疑问句,can/could,can,must,三、表示请求、允许、允诺,(1)Shall/May/Might/Can/Could I/we?,Shall I,pick the children up from school today?,(2)Shall he/she/they?,When,shall my father,be able to leave hospital?,(3)Would/will you?,Would you,do me a favor?,(4)Could/Might/would/should?(To show politeness),Could,I use your bike tomorrow morning?Yes,you,can,.,(5)shall,与第二、三人称用于陈述句，表示说话者的命令、警告或威胁,;,当宣布法律规定时，也用,shall,-You,shall,leave the room at once,and he also,shall,!,-It has been announced that candidates,shall,remain in their seats until all the papers have been collected.,四、表必要性,1.must/have to,mustnt/dont have to,3.need to do/need do,dont need to do/neednt do,Compare:,neednt have done,VS,didnt have to do/didnt need to do,You neednt have worked(work)that late last night.It was harmful to your health.,-Did you work very late last night?,-No,I didnt.I didnt need to work(work)very late.,4.should/ought to do(have done),五、宁愿做,1.would rather do,2.would rather do sth than do sth,3.would do sth rather than do sth,4.would rather sb.,did,sth,1.prefer to do,2.prefer to do rather than do,3.prefer doing to doing,六、,情态动词,/had better/would rather/would like to+have done P57,1.must have done,2.can/could have done;cant/couldnt have done,3.may/might have done,4.should/ought to have done;shouldnt/ought not to have done,5.neednt have done,6.,had better/would rather/would like to+have done,(1)You,had better not have scolded,her.,(2)I,would love to have gone,to the party last night,but I had to work extra hours to finish a report.,七、情态动词的其他用法,1.cant but do/cant choose but do,（不得不、只好）,I cant but agree to his idea.,2.may well(,完全能，很可能）,(1)Her appearance has changed so much that you,may well not,recognize her.,3.may as well,（最好）,(1)You,may as well,do it at once.,4.can not(never)+adj/adv.enough,can not(never)too+adj/adv,(1)You,can never,be,careful enough,when dealing with numbers.(You,can not,be,too careful,),5.may,表示祝愿,May,you succeed!,七、情态动词的其他用法,6.should,竟然,竟会,(1)How,should,I know?,(2)Why,should,you be so late today?,7.must,偏要、非要,(1),Must,you make so much noise?,七、情态动词的其他用法,8.need,和,dare,dare do/dare not do,dared do/dared not do,dare(to)do,dared(to)do,doesnt/didnt/dare(to)do,(1)Everyone in the office complains that he smells awful,but nobody,dares(to)mention,it to him.,(2)He didnt,dare(to)do,it.,(3)He,dared not do,it.,虚拟语气,If+,did,should/would/could/might,do,If+,had done,should/would/could/might,have done,If+,did,should/would/could/might,do,+,were to,do +,should,do,虚拟语气,If,1.If he _(be)our boss,we _(stay)till 9 oclock every day.,2.If you _(take)my advice,you would not have failed in the exams.,3.If he _(not come)tomorrow,we _(put)off the meeting till next Monday.,didnt come/were not to come/shouldnt come,would/should/might/could stay,had taken,were,should/would put,虚拟语气,混合虚拟,If you _(follow)my advice just now,you _(be)better now.,had followed,would be,虚拟语气,if,省略,变倒装,1.If I were at school again,I would study harder.,Were I at,school again,2.If you had come earlier,you would have caught the bus.,Had you come,earlier,3.If it should rain/If it were to rain tomorrow,we would not go climbing.,Should it rain/Were it to rain,tomorrow,虚拟语气,介词短语代替条件状语从句,1.What would you do,with a million dollars,?,if you had a million dollars,?,2.,But for,your help,we couldnt have succeeded.,If it hadnt been for your help,.,虚拟语气,If only,If only I _(be)a flying bird!,If only I _(see)the film!,If only I _(go)with him tomorrow!,even if/even though,Even if/Even though,I,had,a million reasons to leave you,I,would still look for,one good reason to stay.,as if/as though,He looks as if he _(be)an artist.,She speaks English so fluently as if she _(study)abroad.,He learns English so hard as if he _(go)to the USA in the future.,were,had seen,should go,were,had studied,would go,虚拟语气,含蓄条件句,1.I was ill that day.,Otherwise,I,would have taken,part in the sports meeting.,2.A man,who stopped drinking water would be dead,in about 3 days.,3.I,should have given,you more help,but,I was too busy then.,虚拟语气,用于,wish,宾语从句或同位语从句中,1.I wish that I _(be)a bird and _(can)fly freely in the sky.,2.I wish that I _(meet)that film star yesterday.,4.I wish the president _(learn)how to be an American soon.,3.How I wish it _(rain)now!,were,could,had met,werent raining now,would learn,虚拟语气,demand,order,require,insist,suggest,propose,advise,后的宾语从句中，及相关的表语、主语、和同位语从句中,1.He insisted that the boy _(go)with them.,2.Greg still insists(that)he_(do)nothing wrong at that time.,3.We all agree to his suggestion that we _(go)to Dalian for sightseeing.,4.The smile on his face suggested that he _satisfied with our work.,(should)go,did,(should)go,was,虚拟语气,主语从句,It is desired/suggested/necessary/important/strange/natural/a pity/essential+that,It is suggested that the meeting,(should)be put off,till next week.,It is strange that he,(should)have acted,toward his parents like that.,虚拟语气,同位语从句、表语从句,My idea is that we _(think)it over before accepting it.,(should)think,虚拟语气,It is high time thatdid/should do,It is time that you _(go)to school.,It is high time that you went(go)to school.,should go/went,虚拟语气,would rather,1.I would rather he,could inform,us the plan.,2.I would rather I,had listened to,their advice earlier.,shall,You,shall,go to the ball,Cinderella.,You,shall,fail if you dont work hard.,The school rules state that no child,shall,be allowed out of the school during the day,unless accompanied by an adult.,should,I wonder whats happened to Annie.She,should,be(=It was expected that she would be)here by now.,If anyone,should,ask for me,Ill be in the managers office.,Ididntexpectthathe,should,havebehavedlikethat.,would,He said he,would,see his brother tomorrow.,I asked him to move his car but he said he,wouldnt,.,What,would,you do if you lost your job?,Would,you like me to come with you?,I,d,rather have a beer.,He would always turn and wave at the end of the street.,Shall;should;would,You,_,go to the ball,Cinderella.,You_fail if you dont work hard.,The school rules state that no child,_,be allowed out of the school during the day,unless accompanied by an adult.,I wonder whats happened to Annie.She,_,be(=It was expected that she would be)here by now.,If anyone,_,ask for me,Ill be in the managers office.,Ididntexpectthathe,_,havebehavedlikethat.,He said he,_,see his brother tomorrow.,I asked him to move his car but he said he,_,.,What,_,you do if you lost your job?,_,you like me to come with you?,I,_,rather have a beer.,He _ always turn and wave at the end of the street.,shall,shall,shall,should,should,should,would,would,would,would,would,would,