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1、非谓语动词非谓语动词有3种：不定式，动名词和分词。不定式不定式由“todo”构成，其否定式“nottodo”。不定式可带宾语或状语构成不定式短语，没有人称和数的变化，但有语态的变化，不定式可作主，宾，定，状，补，表，不能单独作谓语。一.不定式的用法1作主语Toseeistobelieve.Itisrighttogiveupsmoking.2作表语MyjobistoteachEnglish.3作宾语Hewantedtogo.Ifindithardtoworkwithhim.常见用不定式作宾语的动词:wa
2、nt,wish,like,decide,help,ask,agree,afford,arrange,care,determine,fail,guarantee,hesitate,hope,hurry,manage,offer,pretend,promise,seek,prepare,refuse,swear,expect,plan,wouldlike,makeupone’smind,bedetermined4作补语Heaskedmetoopenthedoor.常见用不定式作宾补的动词:advise,a
3、llow,permit,forbid,ask,beg,encourage,expect,force,get,invite,like,order,peruade,prefer,require,teach,tell,want,warn,wish,considerpractice:*在感官动词feel,hear,listento,see,look,notice,watch,observe,和使役动词make,let,have等后的补语中，不定式不带to，但这些句子变成被动结构时，就必须带toIoftenhe
4、arhimsingthesong.Heisoftenheardtosingthesong.5作定语Heislookingforaroomtolivein.There’snothingtoworryabout.不定式作定语的用法：6作状语Icameheretoseeyou.(表目的)inorderto/soasto第8页共8页Wewereexcitedtohearthenews.（表原因）Hehurriedtotheschool(only)tofindnobodythere.（表结果7疑问词+不定式，在
5、句中起名词作用，可作主，宾，表Hedidn’tknowwhattosay.Howtosolvetheproblemisveryimportant.Myquestioniswhentostart.8作插入语Totellthetruth,Idon’tagreewithyou.tobesuretobefranktosumuptobegin/startwithtomakemattersworsetobebrief二不定式的时态，语态1一般式：表示的动作与谓语动作同时或在它之后发生Hepretendednott
6、oknowmewhenImethiminthestreet.2进行式：表示动作发生时，不定式动作正在发生HepretendedtobereadingEnglishwhenIenteredtheclassroom.3完成式：表示动作发生在谓语动作之前HeissaidtohavelearnedEnglishinBritainforayear.主动被动一般式todotobedone进行式tobedoing/完成式tohavedonetohavebeendoneTheflowersneedtobewatere
7、d.Arailwayissaidtobebeingbuiltnow.Noharmseemstohavebeendone.四不定式的省略为避免重复可用to来代替前面的不定式，常出现在下列动词后expect,hope,wish,mean,prefer,care,forget,want,try或出现在beglad,behappy,wouldlike/love后eg:Ihaven’tbeentoHongKong,butIwishto.---Wouldyoucometotheparty?---I’dloveto
8、,but…如果在省略不定式中含有be,have,havebeen等系动词或助动词，这些词要保留。eg:---Areyouonholiday?---No,butI’dliketobe.---Ididn’ttellhimthenews.---Oh,yououghttohave.动名词动名词由动词+ing构成，具有动词和名词性质，其否定式在前加not,在句中起名词的作用，可作主，宾，表，定语。一动名词的作用第8页共8页1作主语Seeingisbelieving
