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1、s动词不定式省略动词原形保留to河南昝亚娟请看三个经典例句：1.Don'ttouchanythingunlessyourteachertellsyouto.不要触摸实验用品，除非老师让你们（触摸）。2.ThenanyonewhowantstocangoforawalkroundAswanaftertheboattrip.那么，任何想去的人可以在乘船游览后沿阿斯旺大坝散步。3.Europeancountriesarenowmakinganactiveefforttoreusematerialsmorethantheyusedto.欧洲国家现在正在积极努力比过去更多地重复出
2、现使用旧材料。在上面例句中，为了避免重复前面出现的动词touch和reuse以及后面的动词walk，在动词不定式结构中省略了动词原形，只保留动词不定式符号to。高考试题非常重视对这一知识点的考查。请看下列高考试题：1.Theboywantedtorideinthestreet,buthismothertoldhim_____.(NMET95)A.nottoB.nottodoC.nottodoitD.donottoss2.--I'llbeawayonabusinesstrip.Wouldyoumindlookingaftermycat?(NMET95)--Notatall
3、._________.A.IhavenotimeB.I'drathernotC.I'dlikeitD.I'dbehappyto3.--Alice,whydidn'tyoucomeyesterday?--I_____,butIhadanunexpectedvisitor.(NMET97)A.hadB.wouldC.wasgoingtoD.did4.--Youshouldhavethankedherbeforeyouleft.--Imeant_____,butwhenIwasleavingIcouldn'tfindheranywhere.(2000NMET春上海)A.tod
4、oB.toC.doingD.doingso5.--Whyhaven'tyouboughtanybutter?--I___to,butIforgotaboutit.(2001春北京)A.likedB.wishedC.meantD.expected要想准确解答这一类试题，我们必须了解在什么情况下动词原形只保留不定式符号to。本文拟将这一类问题作一归纳。一、上文中出现了某一动词，下文中含有助动词或情态动词如begoingto,usedto,haveto,oughtto,beableto,beabouttoss等+动词原形结构，要省去动词原形，只保留不定式符号to。如:1.Ic
5、an'tstandasmuchasIusedto.2.Shemusegobutyoudon'thaveto.3.HewantedtogotoBeidaihe,buthewasn'tableto.二、在上文或上句对话中出现了某一动词，下文中含有谓语动词如want,decide,like,love,hope,wish,mean,refuse,try等+不定式做宾语结构，要省去动词原形，只保留不定式符号to。如:4.--DidyougotoseetheGreatWall?--No,Iwantto,buttherewasn'ttime.5.--Willyouhelpme?--I
6、'lltryto.6.--Whydidn'tbringmemybookback?--Imeantto,butIforgotaboutit.7.IshallgoifIwantto.三、上文中出现了某一动词，下文中含有动词如ask,tell,order,advise,persuade,warn,wish,permit,allow等+动词不定式做主补或宾补结构，要省去动词原形，而保留不定式符号to。如：8.Ididn'tobjectbecauseIhadbeenordernotto.9.Marywantedtouseyournewbike,butIaskedhernotto.
7、ss四、在对话中，上句话出现过某一动词，答语中含有主语+系动词+形容词+动词不定式结构中，在形容词如happy,glad,eager,anxious,willing,ready,pleased,afraid,等后的动词不定式要省去动词原形，而保留不定式符号to。如：10.--Willyoulendmeahand?--I'mwillingto,butIcan'tnow.11.--Willyoucomeforawalk?--I'dloveto.12.--Areyouinterestedingoingtouniversity?--Yes,Iwo
