中考英语一轮复习培优全攻略(上海专用)第5讲情态动词(原卷版+解析)

情态动词【知识梳理1】must情态动词【例题精讲】1.Thehouseisdarkandquiet,sotheBrowns______havegonetobed.must B.should C.ought D.would2.–MustIbooktheflighttickettoAustraliabyphone?–No,you________.Youcanalsodoitonline.A.mustn’t B.needn’t C.can’t D.couldn’t3.Wehavealreadytriedourbest,sowe________worryaboutthematter.A.maynot B.couldn’t C.mustn’t D.needn’t4.---Mum,willyoubuymethenewiPadaftertheHighSchoolEntranceExamination?---I’mafraidI_______,dear.Weareshortofmoneynow.A.can’t B.mustn’t C.shouldn’t D.needn’t5.It________befantasticifmorestudentsjoininthecharityshowtomorrow.A.must B.need C.can D.may【知识梳理2】haveto【知识拓展】have用法小结实意动词助动词注意总结haveto和must的区别注意总结haveto和must的区别【例题精讲】1.Ihaven’tgotenoughmoneytobuyaticket,soI__________gohomeonfoot.A.must B.haveto C.oughtto D.may2.Hisarmisallright.He______goandseethedoctor.A.hasnotto B.don’thaveto C.haven’tto D.doesn’thaveto3.--Mustwefinishgivingouttheposterstoday?--Yes,we_______.Itcan’tbeputoffanylonger.A.can B.may C.must D.haveto4.Whentrafficlightsarered,we_________stopandwait.A.may B.can C.must D.might.【知识梳理3】would【例题精讲】1.Jennysaidshe_______herholidayinChina.A.spent B.wouldspent C.wasgoingtospent D.wouldspend2.Excuseme,_______youpleasepassmethatcup?A.do B.should C.would D.must3.Whenhewasthere,he______gotothatcoffeeshopatthecornerafterworkeveryday.A.would B.should C.hadbetter D.might4.---Theplaneisleavingrightnow,butJimhasn’tarrivedyet.---Well,hesaidhe_____hereontime.A.came B.wouldcome C.canbe D.willbe5.LiMingsaidhe________happyifBrian________toChinanextmonth.A.as;come B.was;wouldcome C.wouldbe;came D.willbe;come【知识梳理4】may【考点拓展】might的用法表示请求允许，语气较委婉(但并不表示过去)；1)---Might（may)Itakethisbookout?”---“Yes,youmay.”(由于答语是表示给予允许，可用may，但不能用might)2)Youmaytakemydictionaryaslongasyoudon’tkeepittoolong.(不用might)表示推测时,might并非表示过去，比may语气更不确定，表示的可能性更小，有时可用于疑问句的句首。1）Youmightbeabletopersuadehim.你也许能说服他。2）Mightitraintonight?今晚会下雨吗?【例题精讲】1.________youbehappy!A.may B.can C.must D.would---CouldIuseyourbike?---Yes,surelyyou________.A.might B.will C.can D.should3.Tommy,you________playwiththeknife,you________gethurt.A.won’t;can’t B.mustn’t;may C.shouldn’t;must D.can’t;shouldn’t4.Whenhewasthere,he________gotothatcoffeeshopatthecornerafterworkeveryday.A.would B.should C.hadbetter D.Might5.---________Jackbeherenow?---He________behere,butI’mnottoosure.A.Can;may B.Must;needn’t C.May;mustn’t D.Can;can’t【知识梳理5】can【考点拓展】could的用法表过去的表过去的一般性能力，can的过去式IcoulddancewhenIwasalittlegirl.表委婉客气地提出请求，不表过去时态，表委婉客气地提出请求，不表过去时态，回答：--Yes,...can./No,...can’t-Couldyougiveborrowmesomemoney?-YesIcan./No,Ican’t.表表对现在或将来的推测，不是过去式，只是语气更委婉；可用于肯定句、否定句和疑问句表示允许别人做某事只能用表示允许别人做某事只能用can，不能用could注意：情态动词表推测注意：情态动词表推测时，语气由强至弱：肯定句：must＞could＞may＞might

否定句：can’t/couldn’t＞maynot＞mightnot

【例题精讲】1.Millieisverybusywritinganovelthesedays,soshe________watchthegameonTV.A.must B.may C.can’t D.needn’t2.A:IsLucyknockingatthedoor?B:It______beLucy.SheisinAmericanow.A.needn’t B.mustn’t C.can’t D.maynot3.Theoldmancouldhardlyreadorwrite,______?A.canhe B.can’the C.couldhe D.couldn’the4.Hecanhardlywaittohearthegoodnews,_______?A.can’the B.canhe C.doeshe D.doesn’t5.–CanIkeepthismagazinefortwomoredays?--Yes,you____A.must B.may C.oughtto D.need6.A:Listen!IsProfessorJohnsongivingareportinthehall?B:No,it______behim.HehasgonetoJapan.A.needn’t B.mustn’t C.can’t D.maynot【知识梳理6】should表示“应该，应当”，否定结构shouldnot=shouldn’tHeshouldworkharder.他应该更加努力。Crimeshouldbepunished.犯罪应受惩罚。Theyshouldsharetheumbrellatogether.他们应该共用雨伞。【考点拓展】should与oughtto【例题精讲】1.Schools_________allowstudentsatleastonehouradayforsports.A.would B.might C.oughtto D.could2._________wegooutforawalk?–That’sagoodidea.A.May B.Must C.Can D.Shall3.He______eatsogreedily.A.shouldn’tto B.oughttonot C.oughtnot D.oughtn’tto4.—______I______gotherealone?—Yes,youought.A.Do…ought B.Will…ought C.Ought...to D.Ought…/5.You______decidenow.Youcantellmeyourdecisionlater.A.don’thaveto B.mustn’tC.cannot D.shouldn’t6.Everyone________keepthenewtrafficlawandlearnhowtoprotecthimself.A.need B.can C.may D.should7.Let’splaytabletennis,______?A.willwe B.shallwe C.Shan’twe D.willyou.【知识梳理7】need【例题精讲】1.—MayIgooutforawhile,Mom?—No,you________.Youhavetofinishyourhomeworkfirst.A.Shouldn’t B.needn’t C.mustn’t D.won’t2.—ShallItakemyswimmingsuit?—No,you________.Wewilljustgohikinginthemountain.A.mustn’t B.couldn’t C.needn’t D.can’t3.---MustIstayathomethesedays?---No,you_______.Youcangoanywhere.A.mustn’t B.needn’t C.can’t D.don’t4.Sinceyouareverytired,you________finishtheworktoday.Youshouldgohomeearlier.A.needn’t B.maynot C.mustn’t D.can’t5.---Mum,todayisFriday.MustIfinishmyhomeworknow?---No,you______.Youmayhavearestfirstandfinishittomorrow.A.mustn’t B.can’t C.maynot D.needn’t6.Simon,you______doyourhomeworktoday.Leaveitfortomorrow.A.needn’tto B.notneedto C.don’tneed D.don’tneedto一、单项选择1．Thisbook________beLinda’s.Look!Joe’snameisonit.A．can’t B．shouldn’t C．mustn’t D．needn’t2．—________Ifinishmyhomeworknow?—No,youneedn’t.A．Can B．May C．Must D．Could3．—________youlendmeyourdictionary,Laura?—Sorry,Ican’t.IhavejustlentittoEric.A．Could B．Should C．Must D．Need4．Lucy________playtheviolinverywellandshehaswonmanyprizes.A．can B．may C．need D．might5．Itiscloudy.Theradiosaysit________snow.A．must B．might C．need D．should6．I’msorryI________gonow.MyEnglishlessonwillstartinfiveminutes.A．may B．must C．can D．could7．Lookatthesign.You________takephotosinthismuseum.A．wouldn’t B．needn’t C．mustn’t D．couldn’t8．—Mom,Idon’tcarewhatmyclassmatesthinkaboutme.Ijustwanttobemyself.—Well,Ithinkyou________,becausesomeopinionsareworthweighing.A．can B．might C．should D．could9．Insomecitiestheairisheavilypollutedbecauseoftraffic.We________workhardertoprotectourworld.A．may B．can C．might D．should10．—Nick,________youliketojoinustothemuseum?—Whynot?Let’sgo.A．can B．could C．would D．must11．—MustIwritethereportbyhand,Mrs.Taylor?—No,you________.Youcanwriteitonthecomputer.A．needn't B．mustn't C．can't D．shouldn't12．Ifyou______speakEnglishinfrontofpeople,youwon’timproveyourEnglish.A．don’tdare B．daresnotto C．darenot D．don’tdarenotto13．You________takeyourumbrella.I’msureitwon’train.A．mustn’t B．shouldn’t C．don’thaveto D．can’t14．You’dbetter________toomuchtimeplayingcomputergames.A．notspend B．nottospend C．notspent D．notspending15．—Sophie,________Ijoinyouinthecommunityservice?—Ofcourseyoucan.A．must B．need C．should D．can16．—Whatwouldyoubuyforyoursisterasthebirthdaygift?—I________buyheradoll,butIhaven’tdecidedyet.A．may B．must C．will D．need17．Mike,you________playwiththatknife.You________hurtyourself.A．shouldn’t;need B．can’t;shouldC．needn’t;must D．mustn’t;may18．—Mustwefinishourreadingtasksnow?—No,you________.You________finishitafterschool.A．needn’t;may B．mustn’t;may C．can’t;can D．needn’t;must19．—Ican’tfindmyeraser.________Iborrowyours?—Sure.Hereyouare.A．Could B．Need C．Must D．Would20．—Howwasyourholidayinthelakedistrict?

—It________beworse!Idon’tevenwanttotalkaboutit!A．couldn’t B．shouldn’t C．needn’t D．mustn’t21．Billhasbeendrivingallday.He________betired.A．need B．must C．shall D．can22．—ChineserunningstarSuBingtianrunssofast!I________believemyeyes.—Yes,weareallproudofhim.A．can’t B．mustn’t C．needn’t D．shouldn’t23．—CanIparkmycarhere?—No,you________.Lookatthesign.Itsays“Noparking”.A．won’t B．wouldn’t C．needn’t D．mustn’t24．—Lucy,couldyougivemesomesuggestionsonreading?—OK.Myfirstsuggestionisthatyou________haveagoodreadinghabit.A．will B．can C．might D．should25．________yougetmesomepaper,please?A．Shall B．May C．Need D．Will26．—Hey,boys!Doyouknowwhomtherunningshoesbelongto?—Hello,Mr.Clark.They________beJessica’s.Sheoftenwearssuchshoesinourclass.A．must B．can’t C．would D．needn’t27．You________requiretheotherclassmatestosolvetheproblemlikeyou.Everyonehashisownway.A．mustn’t B．needn’t C．maynot D．wouldn’t28．Theboyisverybrave．I________he________thetalltree．A．daresay;darestoclimbB．daretosay;dareclimbingC．daresaying;daresclimbD．daretosay;daresclimbed29．ChinesegovernmenthaspromisedthatChina________neverbethefirstcountrytosolveinternationalproblemsbyforce.A．can B．shall C．will D．must30．—IthoughtyoutoldAmywhatwouldhappenifshedidn’tfollowtherules.—Idid.Butshejust________listentomenomatterwhatItoldher.A．mustn’t B．shouldn’t C．couldn’t D．wouldn’t情态动词【知识梳理1】must教学建议：由于此部分是复习课，建议老师采取以教代学的方式让学生各自负责一个知识点进行讲解，其他学生进行提问。老师在过程中进行补充和总结。情态动词【例题精讲】1.Thehouseisdarkandquiet,sotheBrowns______havegonetobed.must B.should C.ought D.would2.–MustIbooktheflighttickettoAustraliabyphone?–No,you________.Youcanalsodoitonline.A.mustn’t B.needn’t C.can’t D.couldn’t3.Wehavealreadytriedourbest,sowe________worryaboutthematter.A.maynot B.couldn’t C.mustn’t D.needn’t4.---Mum,willyoubuymethenewiPadaftertheHighSchoolEntranceExamination?---I’mafraidI_______,dear.Weareshortofmoneynow.A.can’t B.mustn’t C.shouldn’t D.needn’t5.It________befantasticifmorestudentsjoininthecharityshowtomorrow.A.must B.need C.can D.mayKEYS:ABDAA【知识梳理2】haveto易错点：改写句子：一般疑问句，否定句，反意疑问句，都需要借助助动词do(not),does(not),did(not)。【知识拓展】have用法小结实意动词助动词注意总结haveto和must的区别注意总结haveto和must的区别【例题精讲】1.Ihaven’tgotenoughmoneytobuyaticket,soI__________gohomeonfoot.A.must B.haveto C.oughtto D.may2.Hisarmisallright.He______goandseethedoctor.A.hasnotto B.don’thaveto C.haven’tto D.doesn’thaveto3.--Mustwefinishgivingouttheposterstoday?--Yes,we_______.Itcan’tbeputoffanylonger.A.can B.may C.must D.haveto4.Whentrafficlightsarered,we_________stopandwait.A.may B.can C.must D.might.KEYS:BDCC【知识梳理3】would【例题精讲】1.Jennysaidshe_______herholidayinChina.A.spent B.wouldspent C.wasgoingtospent D.wouldspend2.Excuseme,_______youpleasepassmethatcup?A.do B.should C.would D.must3.Whenhewasthere,he______gotothatcoffeeshopatthecornerafterworkeveryday.A.would B.should C.hadbetter D.might4.---Theplaneisleavingrightnow,butJimhasn’tarrivedyet.---Well,hesaidhe_____hereontime.A.came B.wouldcome C.canbe D.willbe5.LiMingsaidhe________happyifBrian________toChinanextmonth.A.as;come B.was;wouldcome C.wouldbe;came D.willbe;comeKeys:DCABC【知识梳理4】may【考点拓展】might的用法表示请求允许，语气较委婉(但并不表示过去)；1)---Might（may)Itakethisbookout?”---“Yes,youmay.”(由于答语是表示给予允许，可用may，但不能用might)2)Youmaytakemydictionaryaslongasyoudon’tkeepittoolong.(不用might)表示推测时,might并非表示过去，比may语气更不确定，表示的可能性更小，有时可用于疑问句的句首。1）Youmightbeabletopersuadehim.你也许能说服他。2）Mightitraintonight?今晚会下雨吗?【例题精讲】1.________youbehappy!A.may B.can C.must D.would---CouldIuseyourbike?---Yes,surelyyou________.A.might B.will C.can D.should3.Tommy,you________playwiththeknife,you________gethurt.A.won’t;can’t B.mustn’t;may C.shouldn’t;must D.can’t;shouldn’t4.Whenhewasthere,he________gotothatcoffeeshopatthecornerafterworkeveryday.A.would B.should C.hadbetter D.Might5.---________Jackbeherenow?---He________behere,butI’mnottoosure.A.Can;may B.Must;needn’t C.May;mustn’t D.Can;can’tKEYS:ACBAA【知识梳理5】can【考点拓展】could的用法表过去的表过去的一般性能力，can的过去式IcoulddancewhenIwasalittlegirl.表委婉客气地提出请求，不表过去时态，表委婉客气地提出请求，不表过去时态，回答：--Yes,...can./No,...can’t-Couldyougiveborrowmesomemoney?-YesIcan./No,Ican’t.表表对现在或将来的推测，不是过去式，只是语气更委婉；可用于肯定句、否定句和疑问句表示允许别人做某事只能用表示允许别人做某事只能用can，不能用could注意：情态动词表推测注意：情态动词表推测时，语气由强至弱：肯定句：must＞could＞may＞might

否定句：can’t/couldn’t＞maynot＞mightnot

【例题精讲】1.Millieisverybusywritinganovelthesedays,soshe________watchthegameonTV.A.must B.may C.can’t D.needn’t2.A:IsLucyknockingatthedoor?B:It______beLucy.SheisinAmericanow.A.needn’t B.mustn’t C.can’t D.maynot3.Theoldmancouldhardlyreadorwrite,______?A.canhe B.can’the C.couldhe D.couldn’the4.Hecanhardlywaittohearthegoodnews,_______?A.can’the B.canhe C.doeshe D.doesn’t5.–CanIkeepthismagazinefortwomoredays?--Yes,you____A.must B.may C.oughtto D.need6.A:Listen!IsProfessorJohnsongivingareportinthehall?B:No,it______behim.HehasgonetoJapan.A.needn’t B.mustn’t C.can’t D.maynotKEYS:CCABBC【知识梳理6】should表示“应该，应当”，否定结构shouldnot=shouldn’tHeshouldworkharder.他应该更加努力。Crimeshouldbepunished.犯罪应受惩罚。Theyshouldsharetheumbrellatogether.他们应该共用雨伞。【考点拓展】should与oughtto【例题精讲】1.Schools_________allowstudentsatleastonehouradayforsports.A.would B.might C.oughtto D.could2._________wegooutforawalk?–That’sagoodidea.A.May B.Must C.Can D.Shall3.He______eatsogreedily.A.shouldn’tto B.oughttonot C.oughtnot D.oughtn’tto4.—______I______gotherealone?—Yes,youought.A.Do…ought B.Will…ought C.Ought...to D.Ought…/5.You______decidenow.Youcantellmeyourdecisionlater.A.don’thaveto B.mustn’tC.cannot D.shouldn’t6.Everyone________keepthenewtrafficlawandlearnhowtoprotecthimself.A.need B.can C.may D.should7.Let’splaytabletennis,______?A.willwe B.shallwe C.Shan’twe D.willyou.KEYS:CDDDADB【知识梳理7】need【例题精讲】1.—MayIgooutforawhile,Mom?—No,you________.Youhavetofinishyourhomeworkfirst.A.Shouldn’t B.needn’t C.mustn’t D.won’t2.—ShallItakemyswimmingsuit?—No,you________.Wewilljustgohikinginthemountain.A.mustn’t B.couldn’t C.needn’t D.can’t3.---MustIstayathomethesedays?---No,you_______.Youcangoanywhere.A.mustn’t B.needn’t C.can’t D.don’t4.Sinceyouareverytired,you________finishtheworktoday.Youshouldgohomeearlier.A.needn’t B.maynot C.mustn’t D.can’t5.---Mum,todayisFriday.MustIfinishmyhomeworknow?---No,you______.Youmayhavearestfirstandfinishittomorrow.A.mustn’t B.can’t C.maynot D.needn’t6.Simon,you______doyourhomeworktoday.Leaveitfortomorrow.A.needn’tto B.notneedto C.don’tneed D.don’tneedtoKEYS:BCBADD一、单项选择1．Thisbook________beLinda’s.Look!Joe’snameisonit.A．can’t B．shouldn’t C．mustn’t D．needn’t2．—________Ifinishmyhomeworknow?—No,youneedn’t.A．Can B．May C．Must D．Could3．—________youlendmeyourdictionary,Laura?—Sorry,Ican’t.IhavejustlentittoEric.A．Could B．Should C．Must D．Need4．Lucy________playtheviolinverywellandshehaswonmanyprizes.A．can B．may C．need D．might5．Itiscloudy.Theradiosaysit________snow.A．must B．might C．need D．should6．I’msorryI________gonow.MyEnglishlessonwillstartinfiveminutes.A．may B．must C．can D．could7．Lookatthesign.You________takephotosinthismuseum.A．wouldn’t B．needn’t C．mustn’t D．couldn’t8．—Mom,Idon’tcarewhatmyclassmatesthinkaboutme.Ijustwanttobemyself.—Well,Ithinkyou________,becausesomeopinionsareworthweighing.A．can B．might C．should D．could9．Insomecitiestheairisheavilypollutedbecauseoftraffic.We________workhardertoprotectourworld.A．may B．can C．might D．should10．—Nick,________youliketojoinustothemuseum?—Whynot?Let’sgo.A．can B．could C．would D．must11．—MustIwritethereportbyhand,Mrs.Taylor?—No,you________.Youcanwriteitonthecomputer.A．needn't B．mustn't C．can't D．shouldn't12．Ifyou______speakEnglishinfrontofpeople,youwon’timproveyourEnglish.A．don’tdare B．daresnotto C．darenot D．don’tdarenotto13．You________takeyourumbrella.I’msureitwon’train.A．mustn’t B．shouldn’t C．don’thaveto D．can’t14．You’dbetter________toomuchtimeplayingcomputergames.A．notspend B．nottospend C．notspent D．notspending15．—Sophie,________Ijoinyouinthecommunityservice?—Ofcourseyoucan.A．must B．need C．should D．can16．—Whatwouldyoubuyforyoursisterasthebirthdaygift?—I________buyheradoll,butIhaven’tdecidedyet.A．may B．must C．will D．need17．Mike,you________playwiththatknife.You________hurtyourself.A．shouldn’t;need B．can’t;shouldC．needn’t;must D．mustn’t;may18．—Mustwefinishourreadingtasksnow?—No,you________.You________finishitafterschool.A．needn’t;may B．mustn’t;may C．can’t;can D．needn’t;must19．—Ican’tfindmyeraser.________Iborrowyours?—Sure.Hereyouare.A．Could B．Need C．Must D．Would20．—Howwasyourholidayinthelakedistrict?

—It________beworse!Idon’tevenwanttotalkaboutit!A．couldn’t B．shouldn’t C．needn’t D．mustn’t21．Billhasbeendrivingallday.He________betired.A．need B．must C．shall D．can22．—ChineserunningstarSuBingtianrunssofast!I________believemyeyes.—Yes,weareallproudofhim.A．can’t B．mustn’t C．needn’t D．shouldn’t23．—CanIparkmycarhere?—No,you________.Lookatthesign.Itsays“Noparking”.A．won’t B．wouldn’t C．needn’t D．mustn’t24．—Lucy,couldyougivemesomesuggestionsonreading?—OK.Myfirstsuggestionisthatyou________haveagoodreadinghabit.A．will B．can C．might D．should25．________yougetmesomepaper,please?A．Shall B．May C．Need D．Will26．—Hey,boys!Doyouknowwhomtherunningshoesbelongto?—Hello,Mr.Clark.They________beJessica’s.Sheoftenwearssuchshoesinourclass.A．must B．can’t C．would D．needn’t27．You________requiretheotherclassmatestosolvetheproblemlikeyou.Everyonehashisownway.A．mustn’t B．needn’t C．maynot D．wouldn’t28．Theboyisverybrave．I________he________thetalltree．A．daresay;darestoclimbB．daretosay;dareclimbingC．daresaying;daresclimbD．daretosay;daresclimbed29．ChinesegovernmenthaspromisedthatChina________neverbethefirstcountrytosolveinternationalproblemsbyforce.A．can B．shall C．will D．must30．—IthoughtyoutoldAmywhatwouldhappenifshedidn’tfollowtherules.—Idid.Butshejust________listentomenomatterwhatItoldher.A．mustn’t B．shouldn’t C．couldn’t D．wouldn’t参考答案：1．A【详解】句意：这本书不可能是琳达的。看！上面有乔的名字。考查情态动词辨析。can’t不可能，通常用于否定句的推测；shouldn’t不应该；mustn’t禁止；needn’t不需要。根据“Joe’snameisonit.”可知，此处是指不可能是琳达的。故选A。2．C【详解】句意：——我现在必须完成作业吗？

——不，你不需要。考查情态动词。Can可以；May可能；Must必须；Could可以。根据答句“No,youneedn’t”可知，由must引导的一般疑问句表示否定回答时需要用needn’t或don’thaveto来回答。故选C。3．A【详解】句意：——罗拉，你能把字典借给我吗？——对不起，我不能。我刚刚把它借给了埃里克。考查情态动词。Could可以；Should应该；Must必须；Need需要。根据“Sorry,Ican’t.”可知，含有can或could的一般疑问句表示委婉地提出请求，could使语气更加委婉，故选A。4．A【详解】句意：露西小提琴拉得很好，她得了许多奖。考查情态动词。can能够；may可能，也许；need需要；might可能。根据“shehaswonmanyprizes”可知能把小提琴拉得很好，表示能力用can。故选A。5．B【详解】句意：它是多云的。收音机说可能要下雪。考查情态动词辨析。must必须；might可能；need需要；should应该。根据“Itiscloudy.”可知，多云并不意味着下雪，所以这里应是不确定的推测，用might。故选B。6．B【详解】句意：对不起，我现在得走了。五分钟后我的英语课就要开始了。考查情态动词辨析。may可能；must必须；can能够；could可以。根据“MyEnglishlessonwillstartinfiveminutes”可知，英语课要开始了，所以必须要走了，故选B。7．C【详解】句意：看这个标志。你禁止在这个博物馆里拍照。考查情态动词辨析。couldn’t不能；needn’t不需要；mustn’t禁止；wouldn’t将不。根据“Lookatthesign...takephotosinthismuseum.”及常识可知，应该是“禁止拍照”，应用mustn’t。故选C。8．C【详解】句意：——妈妈，我不在乎我的同学怎么看我。我只想做我自己。——我觉得你应该考虑一下，因为有些意见是值得考虑的。考查情态动词辨析。can可以；might可能；should应该；could能。根据“becausesomeopinionsareworthweighing”可知，因为有些意见值得考虑，所以应该要在乎；故选C。9．D【详解】句意：在一些城市，由于交通堵塞，空气污染严重。我们应该更加努力地保护我们的世界。考查情态动词辨析。may可能；can能够；might可能，may的过去式；should应该。根据上文“theairisheavilypollutedbecauseoftraffic”可知，空气污染严重，因此这里是说我们应该更加努力保护我们的世界。故选D。10．C【详解】句意：——Nick，你愿意和我们一起去博物馆吗？——为什么不呢？我们去吧。考查情态动词辨析。can可以；could可以；would将；must必须，根据“Whynot?Let’sgo”可知，空缺处应该是表征求意见，wouldliketodosth“想要做某事”表征求意见，故选C。11．A【详解】句意：——我必须手写报告吗，泰勒夫人？——不，你不必。你可以把它写在电脑上。考查情态动词。needn’t不需要；mustn’t禁止；can’t不可以；shouldn’t不应该。由must引导的一般疑问句的否定回答用don’thaveto/needn’t；故选A。12．C【详解】句意：如果你不敢在人们面前说英语，你的英语就不会提高。考查情态动词。dare表示“敢于”，作实义动词时，后接动词不定式，排除A选项；否定形式是在实义动词前加助动词don’t，排除D选项。主语you是第二人称，动词要用原形，排除B选项。作情态动词，dare(not)dosth“（不）敢于做某事”，后接动词原形，故选C。13．C【详解】句意：你不必带伞，我确信不会下雨。考查情态动词。mustn’t禁止；不可以；shouldn’t不应该；don’thaveto没必要；can’t不可能。根据“I’msureitwon’train”可知，此处指确信不会下雨，所以没有必要带伞。故选C。14．A【详解】句意：你最好不要在玩电脑游戏上花太多时间。考查情态动词hadbetter。根据“You’dbetter…toomuchtimeplayingcomputergames.”可知，本题考查情态动词hadbetter+动词的原形，其否定形式是hadbetternot+动词的原形。故选A。15．D【详解】句意：——苏菲，我可以加入你的社区服务吗？——当然可以。考查情态动词辨析。must必须；need需要；should应该；can可以。根据答语“Ofcourseyoucan.”可知，问句是“我可以加入你的社区服务吗？”，因此用“can”。故选D。16．A【详解】句意：——你会给你妹妹买什么作为生日礼物？——我可能会给她买个娃娃，但我还没决定好。考查情态动词辨析。may可能；must一定；will将会；need需要。根据“...Ihaven’tdecidedyet.”可知，对于妹妹的礼物，“我”还没做好决定，所以“我买娃娃送给妹妹”只是可能发生的事情，“may”符合题意。故选A。17．D【详解】句意：迈克，你不应该玩那把刀。你可能会伤到自己。考查动词辨析。shouldn’t不应该；need需要；can’t不能；should应该；needn’t没必要；must必须；