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1、Grammar动词不定式动词不定式由“to+动词原形”构成,可以在句中作主语、宾语、表语、定语、状语、补足语等,但不能作谓语。不定式可以有自己的逻辑主语,即forsb.todosth.1.不定式作主语Tofinishthisreporttookhimaweek.Myjobistohelpthepoorperson.2.不定式作表语Toseeistobelieve.WhatIwouldsuggestistoputoffthemeeting.想一想!3.不定式作宾语Idecidedtoaskformymoneyback.4
2、.不定式作宾补1)带to的不定式作宾补。很多动词如:allow,order,force,permit,tell,want,wish,forbid,advise,persuade,warn等后面作宾补的不定式都带to。如:Hedidn’tallowustosmokeinhishouse.他不允许我们在他的家里吸烟。2)不带to的不定式作宾补。使役动词make,have,let;感官动词see,watch,observe,hear,listento,notice等后面作宾补的不定式不带to。如:Hemadeafaceand
3、madeeverybodylaugh.他做了一个鬼脸,逗得大家都笑了。如果上述结构变为被动语态,不定式就由原来的宾语补足语变为主语补足语,此时第2类动词(let,have无被动语态)后原来不带to的不定式要加to。如:Hewasseentogoupstairs.有人看见他上楼去了。Becareful!注意:2.不定式作定语Doyouhaveanythingtosayonthequestion?注意:作定语的不定式如果是不及物动词,或者不定式所修饰的名词或代词是不定式的地点、工具等,不定式后面须有相应的介词。Heislo
4、okingforaroomtolivein.Thereisnothingtoworryabout.3.不定式作状语Istayedtheretoseewhatwouldhappen.Wewereveryexcitedtohearthenews.1.Itisgoodtohelpothers.2.Itismyambitiontomakesurethatthedisabledpeopleinourneighborhoodhaveaccesstoallpublicbuildings.3.Myambitionistoworkint
5、hecomputerindustrywhenIgrowup.Identifyitsfunction.(subject)(subject)(predicative)想一想4.Idon’thavetimetositaroundfeelingsorryformyself.5.Iamtheonlystudentinmyclasstohaveapetsnake.6.Abigcompanyhasdecidedtobuyitfromme.7.MyfellowstudentshavebeguntoacceptmeforwhoIam.(
6、attribute)(attribute)(object)(object)8.Ihavehadtoworkhardtoliveanormallife.9.SomedaysIamtootiredtogetoutofbed.10.Wemustcallonlocalgovernmenttogivefinancialassistancetodisabledpeople.(adverbial)(adverbial)(objectcomplement)afford,agree,appear,arrange,ask,attempt,
7、care,choose,claim,come,consent,dare,decide,demand,deserve,determine,elect,endeavorThefollowingverbsarenormallyfollowedbytheinfinitive.Remember!expect,fail,get,guarantee,hate,help,hesitatehope,hurry,intend,learn,long,manage,mean,need,offer,plan,prepare,pretend,pr
8、omiserefuse,say,seem,tend,threaten,want,wishThefollowingverbsarenormallyfollowedbytheGerund.avoid,consider,delay,deny,dislike,endure,enjoy,escape,forgive,finish,imagi