中考英语肯定句变否定句专项练习班级考号姓名总分（一）1.Ithinksheisthere.I______________sheisthere.2.Hecansingthissongandthatone.He_______singthissongorthatone.3.Tomwenttoschooltoo.Tom________gotoschool________.4.Hehashadsupperalready.He_______hadsupper_______.5.Hehadagoodrestjustnow.He______________agoodrestjustnow.6.Let’sdoit.________let’sdoit.或Let’s_______doit.7.Healwaysgetsthereontime.He______________thereontime.8.Behereearlytomorrow.______________hereearlytomrrow.9.Youhadbettercome.Youhadbetter______________.10.BothTomandXiaoPingwenttoschool._______Tom_______XiaoPingwenttoschool.（二）1.Studentsshouldtrytheirbesttostudyhard.Students_______________theirbesttostudyhard.5\n2.HeputupthenoticeonthewallHe________upthenoticeonthewall.3.Hisfriendhasalreadye-mailedthephotos.Hisfriend_________e-mailedthephotos_________.4.ShewilldosomethingnextSunday.She_____do________nextSunday.5.Lethimgoboatingtoday!_________________himgoboatingtoday!6.Shedoesherhomeworkathomeintheevening.She______________herhomeworkathomeintheevening.7.Annhadsomericeandchickenforsupperyesterday.Ann_______have_______rice_____chickenforsupperyesterday.8.You’dbetteraskthatpoliceman.You’d_______askthatpoliceman.9.BothWeiHuaandWeiFangcandoit._______WeiHua_______WeiFangcandoit.10.Mybrotherwenttoseethefilmyesterdayafternoon.Mybrother______________toseethefilmyesterdayafternoon.11.IhaveevervisitedtheGreatWallwithmyson.I______________visitedtheGreatWallwithmyson.12.Hedidsomeworkthismorning.He_______do_______workthismorning.13.Myfriendlikesfilmsaboutcowboys.Myfriend_____________filmsaboutcowboys.5\n附：部分参考答案和解析（一）1.Ithinksheisthere.[误]Ithinksheisn’tthere.[正]I______________sheisthere.[析]英语中think,believe,expect,suppose等表示信念和揣测的动词，后接that从句时，习惯上将从句中的否定形式转移到主句上，即否定主句谓语，不否定从句谓语。2.Hecansingthissongandthatone.[误]Hecannotsingthissongandthatone.正；He_______singthissongorthatone.[析]肯定句中的连词and在否定句中一般要改为or。3.Tomwenttoschooltoo.[误]Tomdidn’tgotoschooltoo.[正]Tom________gotoschool________.[析]too和also用于肯定句中时，否定句中用either替换。4.Hehashadsupperalready.[误]Hehasn’thadsupperalready.[正]He_______hadsupper_______.[析]随着对谓语动词的否定，某些副词也要作相应的变动。5.Hehadagoodrestjustnow.[误]Hehadn’tagoodrestjustnow.[正]He______________agoodrestjustnow.[析]have在表示开会、吃饭、休息、进行体育锻炼等词组中是行为动词，否定句用助动词来完成。6.Let’sdoit.[误]Let’sdon’tdoit.[正]________let’sdoit.或Let’s_______doit.[析]let后接的是不带to的不定式，变为否定式，直接在句首前加Don’t或在不定式前加not。7.Healwaysgetsthereontime.[误]Hedoesn’talwaysgetthereontime.[正]He______________thereontime.[析]Hedoesn’talwaysgetthereontime意为“他并非老是准时到那儿”，是部分否定，习惯上把句中的副词改为相应的表示否定的副词即可。如：Itoftenrainshere.→Itseldomrainshere.8.Behereearlytomorrow.[误]Benothereearlytomorrow.[正]______________hereearlytomrrow.[析]祈使句的否定，一般在谓语动词前加donot的缩写don’t。9.Youhadbettercome.[误]Youdidn’thavebettercome.[正]Youhadbetter______________.[析]hadbetter相当于一情态动词，不可分割，因此not应放在其后。wouldrather也是如此。10.BothTomandXiaoPingwenttoschool.[误]BothTomandXiaoPingdidn’tgotoschool.[正]_______Tom_______XiaoPingwenttoschool.[析]一个句子中如果有不定代词both，all,every改为否定式时，要把这些不定代词改为相应的表示否定的代词。5\n附：肯定句变否定句的技巧1.动词后直接加not。原句中含有be动词(am,is,are,was,were)和助动词(have,has,had)和情态动词(can,shall,will,may,should,would,might,hadbetter等)时，要在动词后直接加not。如：Hismotherhasalreadycalledthepoliceforhelp.→Hismother______calledthepoliceforhelp______. Weshouldhelpthem.→We______________them.2.原句中没有be动词，助动词或情态动词时，要在行为动词前加助动词(do,does,did)与否定副词not的缩写形式。TheoldmanhurthisleglastWednesday.→Theoldman____________hisleglastWednesday.注意：动词have和do动词have的否定式动词have根据不同的人称和时态可以有have,has,had等形式，可以用作实意动词和助动词，分以下情况讨论：①用作实意动词表示状态，如表示拥有、患病或用于haveto表示“必须”等，也表示动作，如表示“吃(=eat)”、“喝(=drink)”、“拿(=take)”、“收到(=receive)”、“度过(=spend)”等，构成否定式时不能直接在其后加not，而应根据情况在其前使用don’t,doesn’t,didn’t：Hehasacar.→He____________acar.Hehadsomedictionaries.→He______________anydictionaries.Youhavetogowithhim.→You______________togowithhim.Hehadsomecakeforbreakfast. →He______________anycakeforbreakfast.Wehadagoodholiday.→We______________agoodholiday.②用作助动词构成完成时态，其否定式只能在其后加not：Ihavereadthebook.→I______________readthebook. HehadleftwhenIarrived. →He______________whenIarrived.动词do的否定式助动词do只在否定句和问句中出现，在肯定句中只能是做实义动词“做….”,所以在含do的句型中改为否定句时一定要注意两个do的用法。不管是助动词还是实义动词都有三种形式，do,does,did.Ididsomewashingyesterday.→I______________anywashingyesterday.Hedoeshishomeworkeveryday.→He____________hishomeworkeveryday原句中含有every,everything,all,both等不定代词或both…and…,alotof等短语时，与否定副词not连用属部分否定。把这些不定代词变成neither,none,noone或把both…and…变成neither…nor…时，才是全部否定。如：BothJoyandSamlikesingingBeijingOpera.5\n→______Joy______SamlikessingingBeijingOpera.在含有宾语从句的主从复合句中，当主句的主语是第一人称，谓语动词是think,believe,suppose时，如果要否定后面的宾语从句，习惯上否定主句的谓语动词。如：Ithinkshewillcomeheresoon.→I_____________shewillcomeheresoon.IbelievedthatMrLiwashonest.→I______believethatMrLi______honest.Hecanmakeamoselplane,Ithink.→I______thinkhe______makeamodelplane.否定不定式及动名词的直接在其前加not.常见的有nottodo,notdo,notdoing.Mothertoldmetogotobedearlylastnight.→Mothergoldme______________gotobedearlylastnight.Let’splaybasketballontheplaygroundthisafternoon.→Let’s______________basketballontheplaygroundthisafternoon.Wouldyoumindturningdowntheradio.→Wouldyoumind_____________theradio.原句子中的some改为any(与some有关的复合不定代词一律换为含any的复合词)；too改either；already改为yet;and改为or等。TheyhadsomefriendsinChina→They______have______friendsinChina.IcoulddanceandsingwhenIwasfiveyearsold.→I_______dance_______singwhenIwasfiveyearsold.5
