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肯定式：to+动词原形否定式：notto+动词原形(to是不定式符号，无意义，有时可以省略)动词不定式的基本形式动词不定式Todothatsortofthingisfoolish。Iwanttoseeyouthisevening.Allyouhavetodoistofinishitquickly.Wefoundahousetolivein.ShecameheretostudyEnglish.Iwarnedthepatientnottoeatcoldwateraftertheoperation.主语宾语表语定语状语宾补一.时态与语态主动语态被动语态一般式进行式完成式不定式todotobedonetobedoingtohavedonetohavebeendone----------动词不定式的时态1.Iopenedthedoortoentertheroom.2.Mr.Smithisgoingtoattendthemeetingtobeheldtomorrow.㈠.一般式(todo).不定式的一般式所表示的动作（状态）与谓语动词几乎同时发生或不强调时间性，或之后发生。㈡.进行式(tobedoing)1.Iamverygladtobeworkingwithyou.2.Hepretendedtobereadingwhenhismothercamein.强调不定式所表示的动作正在进行。㈢.完成式（tohavedone)1.Iamsorrytohavekeptyouwaitingsolong.2.YouseemedtohavereadthenovelwrittenbyMr.Smith.如果不定式表示的动作发生在谓语之前。动词不定式的语态㈠.主动式(todo/tobedoing/tohavedone)1.WewanttolearnEnglishwell.2.Robertissaid____abroad,butIdidn’tknowwhatcountryhestudiedin.A.tohavestudiedB.tostudyC.madeD.tomake当不定式逻辑上的主语是不定式所表示动作的执行者时.㈡.被动式(tobedone/tohavebeendone)1.Hedidn’tliketobelaughedat.2.Heclaimed____inthesuppermarketwhenhewasdoingshoppingyesterday.A.beingbadlytreatedB.treatingbadlyC.tobetreatedbadlyD.tohavebeenbadlytreated.当不定式逻辑上的主语是不定式所表示的动作的承受者时.1.Thepurposeofnewtechnologiesistomakelifeeasier________itmoredifficult.A.notmakeB.nottomakeC.notmakingD.donotmake2.I’veworkedwithchildrenbefore,soIknowwhat______inmynewjob.A.expectedB.toexpectC.tobeexpectingD.expects考题汇集：3.CharlesBabbageisgenerallyconsidered_____thefirstcomputer.A.toinventB.inventingC.tohaveinventedD.havinginvented4.Allenhadtocallataxibecausetheboxwas_______tocarryallthewayhome.A.muchtooheavyB.toomuchheavyC.heavytoomuchD.tooheavymuch5.Theboywantedtoridehisbicycleinthestreet,buthismothertoldhim______.A.nottoB.nottodoC.notdoitD.donotto6.LittleJimwouldlove_____tothetheatrethisevening.A.tobetakenB.totakeB.C.beingtakenD.taking7.Therearefivepairs___,butI’matalosswhichtobuy.A.tobechosenB.tochoosefromC.tochooseD.forchoosing8.________latethenextmorning,Bobturnedoffthealarm.A.TosleepB.SleepingC.SleepD.Havingsleep9.Withalotofdifficultproblems________,thenewly-electedpresidentishavingahardtime.A.settledB.settlingC.tosettleD.havingsettled10.Shewilltelluswhyshefeelssostronglythateachofushasarole_____inmakingtheearthabetterplacetolive.A.tohaveplayedB.toplayC.tobeplayedD.tobeplaying11.Inordertogainabiggershareintheinternationalmarket,manystateruncompaniesaretrying______theirproductsmorecompetitive.A.tomakeB.makingC.tohavemadeD.havingmade12.Theteacheraskedus_______somuchnoise.A.don'tmakeB.notmakeC.notmakingD.nottomake1.—Thelightintheofficeisstillon.---Oh,Iforgot.A.turningitoffB.turnitoffC.havingturneditoffD.toturnitoff2.Shecan’thelp______thehousebecauseshe’sbusymakingacake.A.tocleanB.cleaningC.CleanedD.beingcleaned3.Noteverybodyhastheabilityinpublic.A.ofspeakB.speakingC.spokenD.tospeak4.Maryisalwaysthefirststudenttoanswertheteacher’squestionsinclass.A.risingB.toriseC.roseD.risen5.—Mum,whydoyoualwaysaskmetoeataneggeveryday?---__enoughproteinandnutritionasyouaregrowingup.A.GetB.GettingC.TogetD.Tobegetting6.—Wouldyoubesokindusout?---Withpleasure.A.helpingB.inhelpingC.helpD.astohelp7.Wetumbrellasarenotallowedintothishotelaccordingtotherule.A.tobetakenB.totakeC.takenD.taking8.Robertissaid_______abroad,butIdidn’tknowwhatcountryhestudiedin.AtohavestudiedBtostudyCtobestudyingDtohavebeenstudying9.InAustraliahemadealotoffriends____averypracticalknowledgeofEnglish.A.getB.gettingC.togetD.got10.Thepatientwaswarned_______oilyfoodaftertheoperation.A.toeatnotB.eatingnotC.nottoeatD.noteating11.Weagreed___here,butsofarshehasn’tturnedoutyet.A.havingmetB.meetingC.tomeetD.tohavemet12.Pauldoesn’thavetobemade________.Healwaysworkshard.A.learnB.tolearnC.learnedD.learningSeeyounexttime!