不定式练习题答案讲解

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1.LittleJimshouldlove________tothetheatrethisevening.A.totakeB.tobetakenC.tobringD.tobebrought2.Whynot________goingbyboatforachange?A.tryingB.triedC.totryD.try3.CharlesBabbageisgenerallyconsidered________thefirstcomputer.A.toinventB.havinginventedC.tohaveinventedD.inventing4.TodaywillbeabusydaybecauseIhavealotofwork________.A.todoB.tobedoneC.doneD.beingdone5.Ireallydon'tknow________ortoleave.A.iftostayB.ifstayC.whethertostayD.whetherstay6.I'veworkedwithchildrenbefore,soIknow________inmynewjob.A.whatexpectB.toexpectwhatC.expectwhatD.whattoexpect7.________lateinthemorning,Bobturnedoffthealarm.A.SleepingB.SleepC.TosleepD.Havingslept8.Pleasefindaroomforus________thisevening.A.tostayB.stayingC.stayinginD.tostayin9.Itisnice________youtohelpmewithmyEnglish.A.ofB.forC.withD.to10.Hibernatinganimals(冬眠动物)havenochoicebut________downtosleepinwinter.A.lieB.lyingC.tolieD.lay11.IamdeterminedtodowhatIcan________myEnglish.A.improveB.raiseC.toraiseD.toimprove12.Tomkeptquietabouttheaccident________losehisjob.A.sonotastoB.soasnottoC.soastonotD.notsoasto13.Theboy'seyesneed________withgreatcare.A.toexamineB.examinedC.tobeexaminedD.tobeexamining14.—Wastheworkdifficult?—Notatall.Itwaseasy________.A.todoB.tobedoneC.doingD.tohavedone15.—Washepreparingfortheexamyesterdayevening?—Yes,he's________itnextmonth.A.togiveB.totakeC.tomakeD.todo参考答案与解析:1.B。take带走(去);bring带来。另外,主语Jim与动词take之间构成逻辑上的动宾关系。2.D。考查固定句型“Whynotdo...?”。3.C。不定式所表示的动作在谓语动词所表示的动作之前发生,故应使用不定式的完成式。4.A。不定式作定语时,既可以与其所修饰的名词或代词构成逻辑上的主谓关系,也可以与其所修饰的名词或代词构成逻辑上的动宾关系。当不定式的逻辑主语是句子的主语或谓语动词的宾语时,不定式应使用主动形式。5.C。与不定式连用,并且要表达“是否”之意时,只能用whether,不能用if。6.D。动词不定式作tell,show,know,decide,learn,teach,discuss等动词的宾语时,不定式前面可以带疑问代词、疑问副词或连词whether等,即:who,whom,what,which,when,where,why,how,whether等+todo。7.C。不定式作目的状语。8.D。当不及物动词的不定式形式作定语,且该不定式与其所修饰的名词或代词构成逻辑上的动宾关系时,其后需使用必要的介词。例如:arivertoswimin,apersontolaughat,nothingtoworryabout,achairtositin,ahoteltostayat,apentowritewith等等。9.A。不定式的逻辑主语既可以用forsb.也可以用ofsb.来表示。当形容词强调人的品质、特点时,要用ofsb.。常见的这类形容词有:kind,nice,good,bad,polite,rude,wrong,right,clever,careless等。10.C。but用作介词时,后面可接带to或不带to的不定式。除了短语can'thelpbutdo,can'tchoosebutdo,do…butdo…之外,介词but后常跟带to的不定式。havenochoicebutto...表示“除了……之外毫无选择;只好……”11.D。考查不定式作目的状语。12.B。soastodo或inordertodo在句中作目的状语,其否定形式为soasnottodo和inordernottodo。13.C。动词need后面的动词作其宾语,且与need的主语构成逻辑上的动宾关系时,need后面的动词可用doing或tobedone两种形式。14.A。动词不定式跟在某一形容词后作状语,且这个形容词用来说明主语的性质、品质、特征等时,不定式通常使用一般式,而不使用被动式。再如:Theboxistooheavytocarry.HefindsEnglishdifficulttolearn.15.B。考查不定式作表语。“be+不定式”可用来表示将来。takeanexam参加考试。

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