非谓语动词－－动词不定式（todo）非谓语动词:a.动词不定式b.动名词c.分词(现在分词过去分词)概述：1.谓语动词：在句子中担任谓语的动词2.非谓语动词：是动词的特殊形式，在句中可以作除谓语外的所有成分非谓语动词使用条件：一个句子当中，已经存在一个主句（谓语动词）,又没有连词的情况下,还有别的动词出现时。Shegotoffthebus,leavingherhandbagonherseat.Shegotoffthebus,butleftherhandbagonherseat.★动词不定式一．动词不定式的时态和被动形式动词不定式是非谓语动词的一种，由不定式符号(to)加动词原形构成。不定式的形式有五种：1．一般式todo例如：IliketoreadEnglish.2．进行式tobedoing例如：Heseemedtobereadingsomethingatthattime.3．完成式tohavedone例如：Heseemedtohavecleanedtheroom.4．被动式tobedone例如：Theworkistobedonesoon.5．完成被动式tohavebeendone例如：Theboyissaidtohavebeensenttohospitalyesterday.二.动词不定式的用法I.作主语(1)不定式做主语时，可以直接放在谓语动词之前。Toseeistobelieve．Nottogetthereintimeisyourfault.(2)注：常用it做形式主语，将todo放在位于之后，使句子保持平衡。句型1：It+谓语+todoIttakesusanhour_to__gettherebybus.句型2：It’s+n.+todoIt’sourduty_to_helpthepoor.Itisagreatenjoyment_to_spendourholidayinthemountains.句型3：Itis+adj+forsbtodosth（是形容事物的性质的）Itis+adj+ofsbtodosth（是形容人的品质的）1.Itiseasyformetofinishthisworkbeforeten.2.Itisagreathonorforustobepresentatyourbirthdayparty.3.It'simpoliteofyoutospeaktotheteacherlikethat.II.作宾语接不定式做宾语Iwanttoknowthismatter.Idon’texpecttomeetyouhere(1)常见动词有：like,demand,expect,promise,begin,determine,refuse,offer,fail,manage,learn,seem,intend,forget,want,prepare,pretend,refuse,plan,afford,wish等Theywanted_toget___(get)onthebus,didn’tthey?Hesaidhewished__tobe____(be)aprofessor.(2)it作形式宾语主语+find/think/feel/make/consider…it+adj/n+todosth.1.Wethinkit__important_to_obeythelaw.2Iknow_it_impossible_to_finishsomuchhomeworkinaday.(3)常跟疑问词+不定式作宾语的动词:tell,advise,show,teach,findout,decide,discuss,learn,explain,know,discover,1.Hetaughtushowtousethetool.2.Ihaven'tdecidedwhethertogoorstay.下列词接动名词和不定式均可，但意义不同的动词：stoptodo停下来去做stopdoing停止做forgettodo忘记要做forgetdoing忘记做过remembertodo记得要做rememberdoing记得做过regrettodo遗憾要做regretdoing后悔做过trytodo企图做，尽力做trydoing试着做goontodo继续做（另一件事）goondoing继续做（同一件事）meantodo打算做meandoing意味做InsomepartsofLondon,missingabusmeans_A______foranotherhour.AwaitingBtowaitingCwaitDtobewaitingBoys,don'tforget_D____thewindowsbeforeyouleavetheclassroom.A.closingB.closedC.toclosingD.tocloseShereachedthetopofthehillandstopped__C_____onabigrock.A.tohaverestedB.restingC.torestD.restRemember_A______thelightswhenyouleavetheoffice.A.toturnoffB.turningoffC.turnoffD.toturningoff(4)在cannotbut,cannotchoose/helpbut之后接不带to的不定式.(“前有do,后无to”)1.Ican’tdoanythingbut_go______(go)outwithher.2.Ican’thelpbutlaugh(laugh).3.Ihavenochoicebut__towait_____.（wait）III.作宾语补足语1.I’llgetsomeone_to__repairtherecorderforyou.2.Whatcausedhim_to__changehismind?advise,allow,ask,beg,cause,expect,encourage,force,get,hate,invite,order,wish,want,warn,remind,promise,permit,persuade,request+sb.todo注意：（1）在动词feel（一感），hear,listento（二听），have,let,make（三让），notice,see,watch,observe,lookat（五看）(即：吾看三室两厅一感觉)等后面的补足语中，不定式不带to，但变为被动语态后，必须带to。如：Theysawtheboyfalloffthetree.Theboywassee...
