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专题句型状语从句考点揭密中考考点设置典型例题解析课时训练考点揭密在复合句中修饰主句中的动词、形容词或副词，起状语作用的从句叫状语从句。状语从句可置主语之前，也可置主语之后。前置时，从句后用逗号与主句分开；后置时，与主句之间无标点符号。状语从句可分为时间、原因、目的、结果、条件、比较、地点、让步、方式等九类。e.g.Ifyougototheparty,youwillhaveagoodtime.e.g.YouwillhaveagoodtimeIfyougototheparty.引导时间状语：after,before,when,while,until/tillsince,assoonas,nosooner…than,hardly…when引导条件状语：if,unless,aslongas引导原因状语：because,as,since,for,nowthat引导结果状语：so(that),so…that,such…that引导目的状语：sothat,inorderthat,incase引导让步状语：although,though,eventhough，evenif,while，however,whoever中考考点设置1.(1)引导词：when,while,as,before,after,assoonas,until/till,since.e.g.MotherwascookingdinnerwhenIreachedhome.(when“当……的时候”）e.g.Whilethegirlwasshopping,theUFOlanded.（While“当……的时候”）e.g.Don’tclosethewindowbeforeyougotobed.(before在……之前）e.g.Ashewasreading,hewaslisteningtotheradio.（As“一边……一边”）e.g.AfterIhaddonemyhomework,Iwenttobed.e.g.TheGreenshaslivedheresincetheycametoChina.(since引导的时间壮语从句若用一般过去时，主句则用现在完成时时间壮语从句中若用一般将来时，从句则用一般现在时表示将来，即遵循“主将从现”的原则。e.g.IwillwritetoyouassoonasIgettoBeijing.e.g.Iwilltellhimwhenhecomesback.注意e.g.Iwon’tgotobeduntilIfinishmyhomework.(3)not...until的同义句替换。①not…until在否定句中表示“直到……才”，主句中的动词常用终止性动词,这时till/until可用before替换②till/until在肯定句中表示“直到为止”主句中动词用延续性动词e.g.Iwaitedtill/untilhearrived.(wait是一个延续性动词）e.g.Ididn’tleaveuntil/till/beforeshecameback.（leave是个短暂性动词）practice:1.IwillgotobedassoonasI____myhomework.A.willfinishB.finishingC.finishC4.IwillnotwatchTVuntilIfinishmyhomework.=IwillnotwatchTV_____IfinishMyhomework.before2.Mysister___________(read)herbookintheclassroomwhenherteachercamein.wasreading3.I__________(do)homeworkwhilemyparents____________(watch)TVlastnight.wasdoingwerewatching(3)if...not与unless(=if…not…)及or的同义句转换。(2)遵循“主将从现”的原则,(即主句若为一般将来时，从句用一般现在时代替将来。)2.(1)引导词：if,unless.e.g.IfIamfree,Iwillcallyou.e.g.Ifitdoesn’train,wewillgoforawalk.unless是从属连词，它引导条件壮语从句，译作“除非……否则的话”e.g.Youwillbelateforclassunlessyoustartrightnow.除非你现在出发否则的话年上学就会迟到的。e.g.Youwillnotsucceedunlessyouworkhard.小结:“祈使句+or+一般将来时的陈述句”结构中，Or表示转折，译作“否则，不然的话”相当于一个否定的条件状语从句。相当于Ifyoudon’t(can’t)…,youwill…例句.Studyharder,oryouwillfailtheexam.=Ifyoudon’tstudyharder,youwillfailtheexam.=Unlessyoustudyharder,youwillfailtheexam.例句.Hurryup,oryouwillbelate.=Ifyoudon’thurryup,youwillbelate.=Unlessyouhurryup,youwillbelate.practice:1.Ifyou____totheparty,you____haveagoodtime.gowill2.She_______________nextSundayifshe_______busy.willgoshoppingisnot中考考点设置3.原因状语从句(1)引导词:because,since,as.(2)对because原因状语提问用“why”(3)because不能与so连用。(4)because,since，as,for的区别：Whyareyoustandinghere?---BecauseI’mwaitingformyuncle.①because从句所表示的是对方不知道的直接的原因，因此在回答以why引导的特殊疑问句时只可用because,它引导的从句可以位于主句前或主句后.而as,since引导的从句却不可；例句:LiHongdidn'tgotoschoolyesterday,becausehewasill.②as从句所表示比较明显的原因和理由(由于,既然)这种原因一般是大家知道的,一般从句说明原因，主句说明结果。其从句位于主句之前,③since用来表示比较勉强的理由和原或原由已为人们所知。e.g.Asthewaterwasnotdeep,wewereabletocrosstheriver.(从句说明原因，主句说明结果)e.g.ASIknewhewasill,Ididn'tcallhim.e.g.Sinceeverybodyishere,let’sbiginthemeeting（“大家都在这里”的原由已为人们所知）e.g.Sinceyoucan’tanswerthequestion,（原由已为人们所知）I’llasksomeoneelse.for往往用于附加理由证明。所说的理由是一种补充说明。分句前常有逗号，其引导的分句不可放于句首。例句：It’sspringnow,fortheflowersareout.Practice:1.Whyhasn’tMr.Licometoworktoday.----____hehasgonetoBeijingtohaveameeting.A.IfB.UntilC.ThoughD.Because2.Idecidedtostopandhavelunch,___Iwasfeelingquitehungry.A.BecauseofB.forC.AsDB3.Becausehewasill,hedidn’t____gotoschool.A.soB./4.A.Istayedathomebecauseoftheweatherwasbad.()B.Istayedathomebecausetheweatherwasbad.()C.IstayedathomebecauseofthebadweatherA()AFTTHeissuchagreatfatherthatwealllikehim.such+a+adj+n(名单)+thatItissuchanredapplethatIwanttoeatit.such+an+adj+n(名单)+that小结:so+adj+a/an+n(单数）+that…such+a/an+adj+n(单数）+that…1.Itis___smallaroom___itcan’tholdsomanyPeople.A.so…that,B.such…that…=Itis___asmallroom___itcan’tholdsomanyPeople.A.so…that,B.such…that…Practice:①AB2.Heis__youngaboy__hecan’tcarrythebox.Heis__ayoungboy___hecan’tcarrythebox.A.so…that,A.such…that…例句:Itissuchfineweatherthatpeoplecangoswimming.such+adj+n(不可数)+that例句:TherearesuchbeautifulflowersthatwewanttoPickit.such+adj+n(pl)+that②小结such+adj+un/n(pl)+thatABIhavesolittlemoneythatIcan’tbuythebook.Wehavesomanyfriendsthatwefeelhappy.Wehavesomuchhomeworkthatwetired.小结:一般情况下,such…that…结构中用名词,但是,如果名词是用little,few,many,much等修饰时,要用so来表示.“如此……”solittle(如此少)+[u]sofew(如此少)+cnsomany(如此多)+cnsomuch(如此多)+[u]注意:little若放在可数名词前,译作“小”,而不是“少”要用such来表示.Review:①so+形+a/an+名(单数)such+a/an+形+名(单数)②so+many/much/few/little+形+名③such+形+不可数名词/可数名词复数(4)so...that与too...to和...enoughto间转换too…to可与notenough注意:1.所修饰词和所修饰的词是一对反义词.2.转换时too放在所修饰词之前.too+adjenough放在所修饰词之后.adj+enoughe.g.Theboyissoyoungthathecan’tgotoschool.=Theboyistooyoungtogotoschool.=Theboyisnotoldenoughtogotoschool.中考考点设置6.(1)引导词：though/（although）,eventhough/if.(2)though/不能与but连用。请判断正误，对的写“T”，错误的写“F”。A.ThoughIlikelookingafterher,butshedoesn'tletmedoit.()B.ThoughIlikelookingafterher,shedoesn'tletmedoit.()C.Ilikelookingafterher,butshedoesn'tletmedoit.()FTT【例1】Lucyknewnothingaboutit_________hersistertoldher.［2003河北省］A.becauseB.untilC.ifD.since典型例题解析【例3】Theyoungmantravelledallovertheworldhehadaman-madeleg.［200