（精选幻灯片）12.情态动词-中考英语专题复习

RevisionforModalVerbs,1,ThebasicusesofModalVerbs,2,1.Can,Could过去式；语气更委婉,Can表示习惯能力，而beableto表示经过努力而做成了某事。2.在否定结构中，二者可以互换。,1.在否定、疑问句中表示“对过去发生行为的可能性猜测。2.在肯定句中表示“本来可以做而未做”,Thedoorwaslocked.Shecouldnthavebeenathome.Youcouldhavebeenmorecareful.,3,1.May,Might过去式；语气更委婉,1.在否定、肯定句中表示对过去动作的推测“也许是”2.Might+have+p.p表示虚拟，表“劝告、责备之意。”,Eg.1.Shemaybestillwaitingforus.2.MayIcomein?3.Mayyouhaveahappyholiday.,Eg.1.Hemighthavespokentoheryesterday.2.Youmighthavetoldmeearlier.土豆-服装,4,1.Must,表示肯定的猜测,但只用于肯定句，而mustnt表示“禁止、不准”,Must表示主观Haveto表示客观需求Havegotto多见于口语,3.must+have+p.p,对过去事情的肯定猜测。,Eg.Theroadidwet.Itmusthaverainedlastnight.,5,1、Shall/should,2、shall/should+have+p.poughtto,表示本应该做而未做。,should过去式语气更委婉,Eg.Youshouldhavebeenfiveminutesago.,6,Will/would,7,1、情态动词用于否定、疑问句；条件从句中。eg.1.Dareyougoherealone?2.Howdareyoudosuchfoolishthings?3.Iwontallowyoutoswimintheriver,evenifyoudaredoit.,Dare/dared,2、做实意动词后加不定式。eg.Ihaveneverdaredtotellhimaboutit.,8,Need/needed,1、情态动词用于否定句，疑问句。,2、实意动词用法似dare,用作不定式。,3、need+not+have+p.p表示“本来不需要做而做了。,9,Oughtto,1、其否定式为oughtnotto,2、oughtto+have+p.p表示本来应该做而没有做到。,Eg.Yououghtnottohavecutawaythetreesaroundtheoldbuilding.,10,三点说明,1、情态动词+v表示对现在或将来动作的猜测。情态动词+have+p.p表示对过去动作的猜测。,2、情态动词的过去式与原形相比，多点礼貌，少点冒昧，语气更为委婉。,情态动词在一般疑问句中的回答：Canyousing?MayIcomein?MustIhandinthebooknow?NeedIfinishitnow?,11,典型错误,1.Hemustntbeintheclassroom.(),Cant,2.Youmightleavethebagonthebag.(),mighthaveleft,3.Youmusthaveseenthefilmlastweek,havetyou?(),didntyou,4.LimingmusthavebeentoJapan,didnthe?(),hasnthe,12,13,1.-Therewerealreadyfivepeopleinthecarbuttheymanagedtotakemeaswell.-It_acomfortablejourney.()cantbeB.shouldntbeC.mustnthavebeenD.couldnthavebeen,D,14,2.Johnny,you_playwiththeknife,you_hurtyourself.()A.wont;cantB.mustnt;mayC.shouldnt;mustD.cant;wouldnt,B,15,3.Thefirespreadthroughthehotelveryquicklybuteveryone_getout.()hadtoB.wouldC.couldD.wasableto,D,16,4.-WhencanIcomeforthephotos?Ineedthemtomorrowafternoon.-They_bereadyby12:00.()A.canB.shouldC.mightD.need,B,17,5.Withsomuchworkonhand,you_toseethegamelastnight.()mustntgoBshouldntgoC.couldhavegoneD.shouldnthavegone,D,18,6.TheyaredisappointedattheEnglishparty.Theysaythatit_betterorganized.()hadbeenB.hadtobeC.musthavebeenD.couldhavebeen,D,19,7.Shemusthaveforgottenabouttheclass_?()doesntsheB.mustntsheC.hasntsheD.wontshe,C,20,8.Seewhosthere!_itbeMary?MayMustCanwill,C,21,9.Jenny_withhimatthattime,forIwashavingdinnerwithherinmyhome.()canthavebeenB.mustnthavebeenC.mustbeD.maybe,A,22,10.Tomsfatherpromised,“You_haveanewcomputerifyoupassthecomingexamination,”()canB.shouldC.shallD.may,C,23,11.-Didyouwalkedhomebyyourselflastnight?-Yes,Idid.ButIthinkI_.()needntB.shouldntC.maynothaveD.neednthave,D,24,12.-Wouldyouchangethisbucketforanother?It_holdwater.-OK.Imreallysorry.wontcantdidntdoesnt,A,25,13.YououghttohavehelpedhimwithhisEnglish,_you?A.wontyouB.oughtnotyouC.shouldntyouD.wouldntyou,C,26,14.-IthoughI_something