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情态动词讲解定义情态动词表示说话人对动作的态度,比如需要,可能,意愿,猜测或者怀疑等等情态动词本身有一定意思,但不完全,不能单独作谓语,必须与动词原形连用否定句中,在情态动词后面加not情态动词有mustshallshouldhadbetter词形无变化cancouldmaymightwillwould词形有变化need既可以是情态动词,也可以是实义动词,具有双重性
1、can表示“能,会”,否定为can’t=cannot=cannot其过去式为could→couldn’t1表示会做某事,有能力做某事意思=beabletoe.g.HecanspeakEnglishbuthecan’tspeakJapanese.=HeisabletospeakEnglishbutheisn’tabletospeakJapanese.IcouldsmilebutIcouldn’tspeakwhenIwas2monthsold.=IwasabletosmilebutIwans’tabletospeakwhenIwas2monthsold.区别
①can只用于现在时和过去时couldbeableto可用于各种时态e.g.Theywillbeabletotellyouthenewssoon.Mingminghasbeenabletocountnumbers.
②beableto不与can连用,但可以和其他情态动词或助动词连用e.g.HemaybeabletospeakEnglishverywellsomedayinthefuture.Hemaycanspeak…………………………………………………..Hecanbeabletospeak……………………………………………..2用于征求意见——Can/Could/May/MightIwedosth——Yesyoucan/may./Ofcourseyoucan.——NoSorryyoucan’t./mustn’t.注意
①此处的could和might都不表示过去,只是语气上的委婉,不用作回答
②否定回答中,表示对他人造成一定伤害或影响,或表示违反了某种规定或法律时,用mustn’t较好e.g.——CouldItakethebookoutofthelibrary——Sorryyoumustn’t.——MayIsmokehere——I’mafraidyoumustn’t.
③表示过去能力时,could提问,只能用could回答e.g.——Couldyourideabikewhenyouwere4yearsold——NoIcouldn’t.3表提出意见或请求Can/Couldyoupleasedosth=Wouldyoupleasedosth(此句型中some不变any)e.g.CouldyoupleasegivemeahandWouldyoupleasepassmesomesalt4表示允许或承诺=maye.g.OK.Youcan/maycomeandfindmeatanytimetomorrow.5表示有一定把握的推测,用于否定句和疑问句肯定句用must表示没有把握的推测,用may/mighte.g.——Thewindowisbroken.Whodidit——ItmaybeMary.——Itcan’tbeMary.Thewindowisinthemen’stoilet.——Canitbeanyoneelse——ThenitmustbeBob.Isawhimgointothetoiletjustnow.
2、may表示“可以,可能”,否定形式maynot1表示没有把握的推测,“可能,也许”e.g.Hemayhavealotofworktodo.=Maybehehasalotofworktodo.Youmayberight.=Maybeyouareright.2表示请求“我可以……吗?”表示许可“你可以……”e.g.Youmay/cangonow.——MayIuseyourpen——Yesyoumay./Yesplease./Goahead.——Noyoucan’t./mustn’t.
三、must表示“必须,肯定,一定”,否定形式mustn’t=mustnot1表示必须,意思同havetoe.g.——MustIdoitnow——Yesyoumust.——Noyoudon’thaveto./Noyouneedn’t.注意否定回答不用mustn’tChildrenmustn’tplayontheroadbecauseit’stoodangerous.mustn’t只表“禁止”Hedoesn’thavetogoawayfromhere.=Heneedn’tleavehere.区别
①must表达主观意愿的“必须”,haveto表达客观上或按道理说“不得不”e.g.Imuststudyhard.It’stoolate.Ihavetogonow.
②must没有人称和时态的变化,而haveto有e.g.Hehadtowalkbackhomebecausehelostallhismoney.Momwillbeawayforaweeksowewillhavetodothecookingbyourselves.2表示有把握的肯定句中的推测,“肯定,一定”,见“
一、
(5)”
四、need表示“需要”,否定形式needn’t=neednot1作情态动词,仅用于否定句和疑问句e.g.Heneedn’tgohomeearlyyesterday.=Hedidn’tneed/havetogohomeearlyyesterday.NeedIcallhimrightnow——Yesyoumust.注意肯定回答不用need——Noyouneedn’t./Noyoudon’thaveto.2作实义动词,needsth./sb.needtodosth.否定形式don’tneedto=don’thaveto表示“不必”e.g.Ineedsomehelp.Heneededtogohomeearlyyesterday.DoIneedtocallhimrightnow——Yesyoudo./——Noyoudon’t.3need作名词beingreatneedofsth=needsthbadly“非常需要某物”meettheneed“满足需要(需求)”thereis/wasnoneedforsbtodosth“某人没必要做某事”
五、should表示“应该”,否定形式shouldn’t=shouldnote.g.Weshouldtryourbesttohelpthepoorlittlegirl.Youshouldn’tbelazy.
六、hadbetterdo表示“最好是做……”,否定形式hadbetternotdoe.g.You’dbetternotdrinksomuchcoffee.区别It’sbetterforyoutodomoreexerciseandnottohavesomuchjunkfood.
七、would表示意愿常见句型
①表请求Wouldyoupleasedo…——OK…./Sorry….
②Wouldyoulikesth——Yesplease./Nothanks.Wouldyouliketodosth——I’dloveto.——I’dlovetobut….注意以上句型中,some不变any2013全国各地中考英语试题精选情态动词【2013河南】
1.—Dadmustwewaituntilthelightbecomesgreen—YesImafraidwe______.Thatsthetrafficrule.A.canB.mayC.havetoD.need【2013河北】
2._IseeyourIDcardsirWehavetocheckyourinformation.A.MayB.MustC.ShouldD.Need【2013甘肃白银】
3.Finishyourhomeworkfirstthenyou’ll_______watchTVforanhour.A.canB.beabletoC.ableDcould【2013广东梅州】
4.—AmyIhearyou’vegotmanyforeigncoins.______Ihavealook—OfcourseI’llfetchthemforyou.A.MayB.MustC.ShouldD.Need【2013天津】
5.—Whereareyougoingthismonth—We______gotoXiamenbutwerenotsure.A.needn’tB.mustC.mightD.mustnt【2013山东威海】
6.—MayIgooutforawhileMom—Noyou.Youhavetofinishyourhomeworkfirst.A.shouldntB.needntC.mustntD.wont【2013山东莱芜】
7.Studentsinourschool________knowshoutingisnotallowedinthelibrary.A.canB.mayC.mustD.need【2013湖南长沙】
8.—_______IhavelunchnowMom—No.Youmustwashyourhandsfirst.A.WouldB.MayC.Oughtto【2013福建泉州】
9.—Haveyoudecidedwheretogoforyoursummervacation—Notyet.We_______gotoQingdao.Itsagoodplaceforvacation.A.mayB.needC.must【2013江苏徐州】
10.—CanIborrowyourruler,please—Yes,you.Butyoumustreturnittomebeforelunchtime.A.haveB.canC.mustD.usedto【2013江苏淮安】
11.—CanIparkmycarinfrontofthebuilding—Noyou________.A.wontB.cantC.needntD.couldnt【2013江苏常州】
12.—ShallItakemyswimmingsuit—Noyou.Wewilljustgohikinginthemountain.A.mustn’tB.couldn’tC.needn’tD.can’t【2013浙江舟山、嘉兴】
13.Drivers________wearseatbeltswhiletheircarsarerunningontheroad.A.needB.canC.mustD.may【2013四川遂宁】
14.―MustIreturnthebookthisweek―Noyou.Youcanitfor20days.A.mustn’tkeepB.needn’tborrowC.needn’tkeep【2013四川南充】
15.—Excusemewhosebookisthis—It________beJohn’s.Ithashisnameonit.A.mustB.needC.can’t【2013四川广安】
16.—____Iswimhere—Noyou_____.Lookatthesign“Noswimming”.A.Must can’tB.Can;don’tC.Can;mustn’t【2013上海】
17.—MustIgotomedicalschoolandbeadoctorlikeyoudad—Noyou_______son.You’refreetomakeyourowndecision.A.can’tB.mustn’tC.shouldn’tD.needn’t【2013上海】
18.Alotofforeigners______familiarwiththefamousplacesifinterestinChina.A.amB.isC.areD.be【2013湖南益阳】
19.Theman______bemyEnglishteacher.HehasgonetoCanada.A.mightB.mustC.can’t【2013山西】
20.Acountryhasdreams.Weteenagers________alsohavedreams.Withdreamsandhardworkanythingamazingcanbecreated.A.mayB.mustC.should【2013山东济宁】
21.Accordingtothenewtrafficlaweveryoneinacar_______weartheseatbelt.A.canB.mayC.mustD.will【2013江西】
22.Theresonlyonedaytogo.You_____finishyourschoolworkbytomorrow.A.canB.willC.mustD.may【2013湖北黄冈】
23.—Who’sthemanoverthereIsitMr.Black—It______behim.He’smuchtaller.A.maynotB.can’tC.willnotD.mustn’t【2013山东潍坊】
24.Youmustn’tgooffonyourownbecauseyou_______getlostinthemountains.A.shouldB.mustC.needD.might【2013江苏盐城】
25.—Areyouinaburry—NOI’vegotplentyoftimeIwait.A.canB.can’tC.mustD.mustn’t【2013江苏苏州】
26.______abeautifulcar!I’veneverseenitbefore.A.WhatB.WhichC.HowD.Whether【2013江苏苏州】
27.Ifyou______goatleastwaituntiltherainstops.A.canB.mayC.mustD.will【2013山东济南】
28.—_________Ihelpyousir—Yes.IwantaT-shirt.A.CanB.ShouldC.MustD.Would【2013湖南株洲】
29.-Ohitsraininghard.-Becareful!Theroadbewet.A.couldB.mustC.might【2013安徽】
30.You____________driveyourcarsofast.It’sverydangerous.A.wouldn’tB.shouldn’tC.couldn’tD.mightn’t【2013湖北随州】
31.—HelloLisa.Whatsthematter—I______findmymobilephone._______youseenitA.couldnt;DidB.cant;HaveC.need;HadD.must;Are【2013黑龙江绥化】
32.—WhoseT-shirtisthis—It________beJohn’s.It’s________smallforhim.A.can’t;muchtooB.can’t;toomuchC.mustn’t;toomuch【2013黑龙江齐齐哈尔】
33.-MustIreturnbeforedinnerMum-Noyou.Youcancomebacklater.A.mustn’tB.needn’tC.maynot【2013广西贺州】
34.ThewomanwhoistalkingwithMr.Brown______beMissLi.ShehasgonetoEngland.A.can’tB.mustC.mayD.mustn’t【2013江苏连云港】
35.FromMarch23rd2013anyoneundertheageof14________gointoDisneysUSparksalone.A.couldntB.mustntC.needntD.mightnt【2013四川宜宾】
36.—LiLeihurryup!Thebusiscoming.—Ohno.We______crossthestreetuntilthetrafficlightsturngreen.A.mustn’tB.maynotC.needn’tD.haveto【2013安徽】
37.You____________driveyourcarsofast.It’sverydangerous.A.wouldn’tB.shouldn’tC.couldn’tD.mightn’t【2013山东泰安】
38.—MayIsmokehere—Noyou_______.Thisisano-smokingroom.A.needn’tB.mustn’tC.couldn’tD.wouldn’t【2013山东青岛】
39.Excusemesir.You______openthedoorbeforethetrainstops.A.mustntB.needn’tC.maynotD.don’thaveto【2013湖北武汉】
40.—HoneystayhomebeforeIreturn.—I________mum.A.mustB.canC.willD.should【2013甘肃兰州】
41.—Lookattheboyplayingbasketballontheground.IsitGeorge—It______behim.Hetoldmehewouldplaybasketballafterclassbuthe’snotsure.A.mustn’tB.mustC.can’tD.may【2013广东广州】
42.—MustIfinishmyhomeworknow—Noyou______.Youcangohomenow.A.needn’tB.mustn’tC.shouldn’tD.can’t【2013广东】
43.—Someoneisknockingatthedoor.IsitAnn—It______beher.Sheisgivingaperformanceatthetheaternow.A.mayB.mustC.can’tD.mustn’t【2013湖南邵阳】
44.—MustIhanditintoday—No.you.Youcandoittomorrow.A.mustntB.cantC.neednt【2013四川内江】
45.—_____Ifinishmyhomeworknow—Noyou_____.Yourworkisovertoday.A.Cant;mustB.Must;donthavetoC.May;couldntD.Couldnt;could【2013福建福州】
46.—IsthatgirlSusan—It_________beher.SheleftforBeijingyesterday.A.needntB.cantC.mustnt【2013山东菏泽
47.—Canwerunacrosstheroadnow—Nowe.Wehavetowaituntilthelightturnsgreen.A.needntB.mustntC.couldntD.shouldnt【2013山东枣庄】
48.InFranceyouputbreadonthetable.Youarenotsupposedtoputitontheplate.A.shouldn’tB.aresupposedtoC.wouldliketoD.will【2013湖南娄底】
49.—MustIstartnow—Noyou_________A.mustntB.cantC.neednt【2013湖北宜昌】
50.—Difficultiesalwaysgowithme!—Cheerup!IfGodclosesadoorinfrontofyouthere______beawindowopenedforyou.A.wouldB.mustD.couldD.can【2013湖北十堰】
51.—TwohundredyearsforsuchaT-shirt!You_____________bejoking!—I’mnotjoking.It’smadeofsilk.A.can’tB.canC.needD.must【2013湖北孝感】
52.—Lookattheyoungladyinred.IsitMrs.King—No.It_____beher.Sheiswearingawhitedresstoday.A.canB.mayC.mustD.can’t【2013湖北咸宁】
53.It’sratherhotintheroom.You’dbetter_______thewindowsorthedoor. A.close B.nottoclose C.don’tclose D.notclose【2013山东烟台】
54.—Whosebookisthis—Itourgeographyteacher’s.Youseehisnameisonit.A.can’tbeB.canbeC.mustn’tbeD.mustbe【2013山东临沂】
55.—MayIplaycomputergamesnowMom—No.Youfinishyourhomeworkfirst.A.mustB.canC.couldD.may【2013山东临沂】
56.—DoyouknowthesongGangnamStyle—Ofcourse.Itinteresting.A.tastesB.smellsC.soundsD.feels【2013浙江杭州】
57.--Paulinehaslostherphone.–No.It’sinherbag.I_________hearit.A.mustB.canC.mayD.shall【2013重庆】58.Hurryup,oryou____catchthetrain.A.can’tB.needn’tC.mustntD.shouldn’t【2013浙江宁波】
59.ThatT-shirt_______beexpensivebecauseit’sbyafamousdesigner.A.can’tB.mustn’tC.mustD.should【2013浙江丽水】
60.—HowmanyEnglishwordsdoyouthinkIshouldknow—Asmanyasyou______.Thenyouwillfindreadingquiteeasy.A.willB.mustC.canD.might答案1-5CABAC6-10BCBAB11-15BCCCA16-20CDCCC21-25CCBDA26-30ACABB31-35BABAB36-40ABBAC41-45DACCB46-50BBBCB51-55DDDDA56-60CBACCPAGE2。