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高中英语39句句型1wouldratherthatsomebodydid…宁愿……;更愿意……(表示现在或将来的不能实现的愿望)wouldratherthatsomebodyhaddone…宁愿……;更愿意……(表示过去的不能实现的愿望)[例句]1.I'dratheryoupostedtheletterrightnow.我想让你现在去寄信。2.I'dratheryouwerenotacelebratedactor.Inthatcase,wecouldspendmoretimetogether.我到情愿你不是个知名演员，这样我们可以有更多的时间在一起。3.I'dratherthatIhadn'tseenheryesterday.我情愿昨天没有看到她。句型2asif/though+主语+did/haddone…好像……(表示与现在或将来的情况相反用过去时;表示与过去的情况相反用过去完成时)[例句]1.Ourheadteachertreatsusasifwewereherownchildren,soallthestudentsinourclassthinkhighlyofher.我们校长对待我们就像我们是她自己的孩子一样，所以我们班所有学生都很尊重她。2.AlantalkedaboutRomeasifhehadbeenthere.Alan谈起罗马来就好像他去过那里似的。句型3wish+宾语从句，表示不大可能实现的愿望表示现在的不能实现的愿望：主语+过去时;表示过去的不能实现的愿望：主语+haddone;表示将来的不能实现的愿望：主语+would/coulddo[例句]1.HowIwishwestudentshadmorefreetimetorelaxourselves!我们学生多么希望有更多的自由时间放松自己!2.Ifailedinthemathsexam.HowIwishIhadn'twastedsomuchtimeplaying!我考试没有及格。我多么希望我没有浪费这么多的时间用来玩儿！3.Whatapityyoucan'tgototheparty.HowIwishIcoulddancewithyouattheparty!真遗憾你不能去这个聚会。我多么希望我可以和你在聚会上跳舞啊！句型4It'shigh/abouttimethatsomebodydid(shoulddo)(should通常不省略)…早就该……[例句]1.It'stimethatyouwenttoschool.=It'stimethatyoushouldgotoschool.你该去上学了。2.It'shightimethatwedidsomethingtoimproveourenvironment.该是我们为环保做些事情的时候了。3.Ithinkit'shightimethatshemadeuphermind.我想她该拿定主意了。句型5情态动词+动词不定式完成结构的用法couldhavedone本来可以做某事实际却没做”或“可能已经做了某事”mighthavedone或许已经做了某事“should/oughttohavedone本来该做某事而实际未做”shouldnot/oughtnottohavedone本来不该做实际却做过了，含有责备语气needn'thavedone本来不必做但是已经做过了wouldratherhavedone当时宁愿做了某事实际没有做过悔之意。句型6as,though,although引导的让步状语从句。[注意]although位于句首;though位于句首或句中;as位于句中=though。它的词序是把句中强调的形容词、副词、动词或名词放在连词前。[例句]1.Although/ThoughI'myoung,IalreadyknowwhatcareerIwanttofollow.→Youngas/thoughIam,IalreadyknowwhatcareerIwanttofollow.我虽然年轻，但我已经明白我应该追随什么样的事业。2.Although/ThoughIrespecthimverymuch,Icannotagreewithhisidea.→Muchas/thoughIrespecthim,Icannotagreewithhisidea.虽然我很尊重他，但是我不同意他的观点。3.Although/Thoughheisachild,heknowsalotofChinesecharacters.→Child(省略冠词)as/thoughheis,heknowsalotofChinesecharacters.他虽然还是个孩子，却认识了许多汉字。4.Althoughhetried,hecouldn'tsolvetheproblem.→Tryashemight,hecouldn'tsolvetheproblem.尽管他努力了，但是他没有解决问题。5.Althoughitisraining,I'mgoingoutforawalk.→Rainingasitis,I'mgoingoutforawalk.天虽然在下雨，我还是要出去散步。6.Strangeasitmayseem,nobodywasinjuredintheaccident.这次意外虽然显得不可思议，却没有人受伤。7.MuchasIwouldliketohelp,Ihavealottodo.虽然我很想帮助你，但是我有很多事要做。8.Objectasyoumay,Iwillgo.纵使你反对，我也要去。句型7…before…特殊用法(1)没来得及……就……[例句]1.Theroofhadfallenbeforehehadtimetodashintotheroomtosavehisbaby.他还没有来得及冲进房间救孩子，房顶就塌了。2.HehadrunoffbeforeIcouldstophim.我还没有来得及阻止，他已经跑了。3.Tomygreatdisappointment,myfavoritesingerhadlefttheconcertbeforeIcouldhaveawordwithher.让我非常失望的是，我还没有来得及和我最喜欢的歌手打招呼，她就已经离开了。句型8…before…特殊用法(2)过了多久才……或动作进行到什么程度才……[例句]1.Theyhadwalkedaboutfiftymilestothewestbeforetheysawavillage.他们西行50英里才看到一个村庄。2.Theworkershadworkeddayandnightaboutthreedaysbeforeeverythingreturnedtonormal.工人们连续工作3天才使一切恢复正常。3.Healmosthadknockedmedownbeforeheknewit.他几乎撞到我了才意识到。4.Wehadwalkedalongwaybeforewefoundsomewater.我们走了很长的路才找到一点水。5.FiveyearswentbybeforeIknewit.不知不觉，五年过去了。句型9Itwas+时间段+before….过了多久才……Itwasnotlongbefore….不久，就……Itwill(not)be+时间段+before….要过多久(不久)……才……(before从句谓语动词要用一般时态)[例句]1.Itwasnotlongbeforehesensedthedangeroftheposition.不久他就意识到他处境的危险。2.Itwasfivedaysbeforehecameback.五天后他才回来。3.Itwillbehalfayearbeforeyougraduatefromtheschool.再过半年你才能毕业。4.Itwillnotbelongbeforetheyunderstandeachother.他们大概不久就会互相了解。句型10incaseof…(+n.)以防;假使;incasethat…以防，假使……(谓语动词用一般现在时态或should+动词原形)[例句]1.Incaseoffire,whatshouldwedo?假使发生火灾，我们要做些什么呢？2.PleaseremindmeaboutitincaseIforget/shouldforget.请提醒我，以防我忘记。3.Incase(that)Johncomes/shouldcome,pleasetellhimtowait.假使约翰来了，请让他等一会儿。4.Pleasetakeyourumbrellaincase(thatitrains/shouldrain).带上雨伞，以防下雨。句型11强调句型基本构成：Itis/was+被强调的部分+who(强调部分指人时)/that（强调部分可以是人也可以是事物）+原句剩余部分[例句1]Isawhiminthestreetyesterdayafternoon.→ItwasIwhosawhiminthestreetyesterdayafternoon.(强调主语)→ItwasinthestreetthatIsawhimyesterdayafternoon.(强调地点状语)→ItwasyesterdayafternoonthatIsawhiminthestreet.(强调时间状语)→Itwashimthat/whoIsawinthestreetyesterdayafternoon.(强调宾语)[例句2]Hedidn'tgotobeduntilhismothercameback.→Itwasnotuntilhismothercamebackthathewenttobed.句型12(1)、祈使句(表条件)+or/orelse/otherwise+主句(2)、祈使句(表条件)+and+主句(表结果)[例句1]Hurryup,oryou'llbelateforclass.快点儿，否则你上课要迟到了。[例句2]Workhardandyouwillmakeprogresseveryday.好好学习，天天向上。句型13…until….直到……时候not…until…直到……才……[例句1]Youaretostayuntilyourmothercomesback.你得等到你妈妈回来。Themeetingwasputoffuntilteno'clock.会议推迟到十点钟。[例句2]Thevillagersdidn'trealizehowseriousthepollutionwasuntilallthefishdiedintheriver.→Notuntilallthefishdiedintheriverdidthevillagersrealizehowseriousthepollutionwas.等到湖里的鱼全死光了，村民们才意识到污染是多么严重。句型14unless…除非，如果不……(=if…not)[例句]Ishallgotomorrowunlessitrains.如果不下雨，我明天去。Iwon'tattendhisbirthdaypartyunlessinvited(=unlessIaminvited).除非被邀请，否则我不去参加的生日晚会。句型15(1)、主语+was/weredoing…when…正在做某事这时……(2)、主语+was/wereabouttodo…when…=主语+was/wereonthepointof(doing)…when…正要去做某事这时……(3)、主语+haddone…when…刚刚做完某事这时...[例句1]IwaswalkingalongtheriverwhenIheardadrowningboycryforhelp.我正在河边行走，这时我突然听到一个落水男孩求救。[例句2]Iwasabouttoleavewhenitbegantorain.我刚要离开，这时下雨了。[例句3]Ihadjustfinishedmyex