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条件句()1.Idon’tknowifit______tomorrow.Ifit______,wewon’tgoonapicnic.A.rains;rainsB.willrain;rainC.willrain;willrain()2.Insummer,foodgoesbadeasily________itisputintherefrigerator.A.untilB.ifC.unless()3.--IhearJackChanwillcometoLaiwunextweek.--Really?_______hecomes,myyoungersisterwillbeveryhappy,A．IfB．UntilC．UnlessD．Before()4.—Couldweplayfootballinyourplayground,Sir?--No,_______youhavetheprincipal’snote.A.ifB.unlessC.becauseD.since()5.Manychildrenlikefriedchicken_______itisunhealthyfood.A.ifB.becauseC.although()6.AllthestudentsinClass5willclimbthemountainifit_______raintomorrow.A.won’tB.don’tC.didn’tD.doesn’t()7---Wouldyouliketogobikeridingwithustomorrow?---Sure,________Iambusy.A.sinceB.unlessC.whenD.until()8.Idon’tlikebread.Iwon’teatit________Iamveryhungry.A.whenB.unlessC.if()9.You’dbetterlookupthenewwordinadictionary_____youdon’tknowit.A.ifB.thatC.thoughD.whether()10.Afterthemeeting,wewillhaveaparty.Ifyou_______free,comeandjoinus.A.areB.willbeC.were一、课后练习()1.I’llgoforawalkwithyouifit________tomorrow.A.won’trainB.doesn’trainC.willrainD.notrains()2.I’mwaitingformyMum.________,I’llgoshoppingwithher.A.Ifshedoesn’tcomeB.IfshecomesC.IfshewillcomeD.Ifshewon’tcome()3.---Tommy,doyouknowifFrank______tothezoothisSundayifit______?---Sorry,Ihavenoidea.A.willgo;isfineB.goes;isfineC.willgo;isgoingtobefineD.goes;willbefine()4.IfI_______you,Iwouldweartheshirtandthetie.A.amB.wasC.wereD.willbe()5.Whatwouldyoudoifyou_______alotofmoney?A.hadB.havehadC.willhaveD.have()6.InBritain,youmustbe18________youwanttodriveacar.A.whyB.becauseC.soD.if()7.IfI_______you,I’dtakethesmallapple.A.amB.wereC.was()8.Susanwillnotarriveattheairportontime_______shehurriesup.A.onceB.ifC.whenD.unless()9.Ifmyfather________back,pleaseletmeknow.A.comesB.willcomeC.come()10.Let’ssee___wecanfindsomeinformationaboutthecity.A.thatB.ifC.whatD.which()11.IfIyou,Iabighouse.A.was,wouldbuyB.were,wouldliketobuyC.were,wouldbuyD.was,bough()12.Ifhetomorrow,pleasetellme.A.comeB.comesC.willcomeD.came()13.Whatwouldyoudoifyouthelottery(彩票)?A.winB.wonC.aregoingtowinD.havewon典型例题1B2C3A4B5C6D7B。考查unless引导的条件状语从句。由关键词Sure可推断“我会和你们一起自行车旅行的，除非我很忙”，故排除A、C、D三项，选B。8B9A。考查if引导的条件状语从句。结合题意“如果你不知道那个新词，你最好在字典里查阅它”可排除B、C、D三项，选A。10A课后练习1B。在条件状语从句中，从句不能用一般将来时，应用一般现在时，故正确答案为B。2B3A。结合题意“汤姆，如果天气好的话，你知道弗兰克这个星期六将去动物园吗？”可知第一个空是宾语从句，要用一般将来时，第二个空是条件状语从句，要用一般现在时，故排除B、C、D三项，选A。4C5A。四个选项分别是动词have的四种形式，由关键词would和题意“如果你有很多钱，你会做什么”可知这里考查虚拟语气，故选A。6D7B。本题考查虚拟语气的用法。表示与现在事实相反的假设，条件状语从句中的be须用were。8D9A。考查条件状语从句的时态。因为主语是祈使句，所以从句要用一般现在时，故选A。10B11C12B13B