动词不定式的基本形式

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1、动词不定式的基本形式是“to＋动词原形”，有时可以不带to.在句子中可以作主语、宾语、表语、宾语补足语、定语和状语。1．作主语如：It'seasytogetlostinabigcitylikeTokyo．Itisimportantforustodoitwell．2．作宾语Indiansliketoeathotfood．Theyneedtolookatamap．3．作表语Theoldman'sjobistotakecareoftheflowersinthegarden．4．作宾语补足语Hetoldmenottobringyouanything．Wh

2、otaughtyoutoplaythemusic？5．作定语InmydreamsIalwayshaveverydifficultjobstodo．Everydayhemadeoneofthesmalleranimalsbringhimsomethingtoeat．6．作状语（1）表示目的Inhisthirdyear，heleftHarvardtoworkforacompanycalledMicrosoft．（2）表示结果如：It'stooheavytocarry．TheCalifornianshiparrivedtoolatetosavemore

3、people．(3)表示原因Hejumpedwithjoytohearthenews.7．和某些形容词连用和动词不定式经常连用的形容词有sure，ready，happy，sorry，afraid等。例如：He'sveryhappytoseehisdaughter．I'msorrytotroubleyou．8．和疑问词who，what，when，where，which，how构成不定式短语。例如：Idon'tknowhowtouseacomputer．Canyoutellmewhentostart？9．动词不定式的否定形式:notto＋动词原形Te

4、llhimnottobelate.Iwilltrynottoreadinbed.10．动词不定式不要to的:（1）作动词let,make,have,feel,hear,see,watch,等的宾语补足语时,动词不定式不带to.Lethimdothework.Hemademeworkdayandnight.Isawhimfalloffthebike.（2）作动词help的宾语补足语时,动词不定式可带to,也可不带to.Hedidn’thelpme（to）mendthebike.Youhavehelped(to)protectourenvironme

5、nt.（4）在whynot…?,hadbetter,wouldrather等的后面也跟动词原形Whynotbuyadictionary?Youhadbetter（not）stayathome.Iwouldrathergoearly.※在下列答语中,to不能省略:－Willyoujoinmeinawalk?－Iwillbegladto.－Willyougoswimmingwithmethisafternoon?－Iwouldloveto.1.Don’tforget_________theletter.　　A.tosendB.sendC.sendin

6、gD.beingsent2.Is______necessarytoreturnthebooktomorrow?　　A.thisB.thatC.itD.which3.I’mafraidtheywouldnotallowhim________here　　A.tosmokeB.smokingC.smokesD.smoke4.Mothertoldme________thewaterbeforeIdrankit.　　A.boilingB.boiledC.boilD.toboil5.Onmywayhome,Istopped_______somefood.　　

7、A.buyB.tobuyC.buyingD.bought6.ThefirstthingIwanttodois__________.　　A.visittohimB.tovisithimC.visitinghimD.visitedhim7.LiYangadvisedme_________toomuch,otherwiseIwouldhavebeendrunk.　　A.nottodrinkB.todrink　　C.notdrinkingD.drinking8.Theteachertoldthem________makesomuchnoise.　　A.d

8、on’t　　B.not　　C.willnot　　D.notto9.Iprefer____ratherthan______.　　A.rea