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一、状语从句的定义状语从句(AdverbialClause)是指句子用作状语时,起副词作用的句子。状语从句可以修饰谓语、非谓语动词、定语、状语或整个句子。二、状语从句的分类状语从句种类连词时间状语从句when,while,as,till,until,before,after,assoonas,since地点状语从句where,wherever,everywhere条件状语从句if,unless,aslongas,incase,ifonly让步状语从句though,although,evenif/eventhough,whatever,however,nomatter+疑问词原因状语从句because,since,as,nowthat,seeingthat,consideringthat,inthat,giventhat目的状语从句sothat,inorderthat结果状语从句sothat,so...that..such…that..比较状语从句as...as....,than方式状语从句asif/asthough,(just)as三、时间状语从句1.引导时间状语从句的连词从属连词用法例句While"与……同时,在……期间",从句常用延续性动词或表示状态的词注:while有表转折含义WhilewewerewatchingTV,thelightsuddenlywentout.Iwasdoingmyhomeworkwhilemybrotherwasplayinggames.When"当……时",表示主句的动作和从句的动作同时或先后发生,从句的动词可用延续性动词,也可用非延续性动词IwasthinwhenIwasachild.WewerewatchingTV,whensuddenlythelightwentout.As"正当,一边……一边,随着",表示两个动作同时发生或某事发生时,另一个动作发生了Astimewenton,histheoryprovedtobecorrect.
Shesanghappilyasshewalkedalongthelake.Till/Until用于肯定句时,表示"直到……为止",主句必须为延续性动词;not...until/till表示"直到……才",主句常用短暂性动词Weshallwaituntil/tillhecomesback.
Ididn’tleaveuntil/tillshefinishedherhomework.
Since"自……以来",主句用一般现在时或现在完成时,从句用一般过去时IhaveheardlotsofgoodthingsaboutyousinceIcamebackfromabroad.ItisthreeyearssinceIcamehere.Before在……以前Hemustfinishalltheworkbeforehegoeshome.
After在……之后SheshoewdmemanybeautifulstampsafterIgottoherhome2.when,while,as注意点①when可以和延续性动词连用,也可以和短暂性动词连用;而while和as只能和延续性动词连用。②when从句的谓语动词可以在主句谓语动作之前、之后或同时发生;while和as从句的谓语动作必须是和主句谓语动作同时发生。3.until¬until&tilltill和until同义,作"直到……时(为止)"解,till多用于非正式文体,until多用于句首。肯定形式表示的意思是"做某事直至某时",动词必须是延续性的。否定形式表达的意思是"直至某时才做某事"。动词为延续性或非延续性都可以。注意:用Howlong提问,回答用Until用Howsoon,when提问时,回答要用Notuntil例:Howlongwillthemeetinglast?Untiltheyreachanagreement.Howsoonwillwebeginthedinner,Mum?Notuntilyourfathercomesfromwork,dear.(1)before"在……之前"。Doitbeforeyouforget.I’llbebackbeforeyouhaveleft.(2)before"……之后才"。Itmaybemanyyearsbeforewemeetagain.Itwasthreedaysbeforehecameback.重要句型itwill(not)be+一段时间+before(一般式)…例:It
will
be
long
before
he
goes
abroad.
Itwas(not)+一段时间+before例:Itwasthreeyearsbeforehecameback.Itis/hasbeen+一段时间+since(一般过去时)注意:时间状语从句中适用于主将从现的连词Assoonas,when,while,before,after,until例:Youmustreadtheinstructionscarefully_________youtakethemedicine.A.as B.after C.while D.before---Mum,I'mdyingforfood.Canwehavedinnernow?---Dear,let’swait______yourdadcomesback. A.when B.after C.until D.whileAgoodstorytellermustbeabletoholdhislisteners’curiosity(好奇心)________hereachestheendofthestory.A.if B.unlessC.after D.untilMikeusedtobeatopstudent,buthehasfallenbehind___helostinplayingsince untilIwon’tbelievethatthelittleboycanreadfivethousandwords_________Itesthimmyself.afterB.whenC.ifD.until四、地点状语从句例:1.Halfanhourlater,Lucystillcouldn’tgetataxi_______thebushaddroppedher.A.untilB.whenC.althoughD.where五、目的状语从句1.sothat,inorderthat引导目的状语从句,构成复合句,且从句中常与can,could,may,might等情态动词连用。Speakclearlysothat/inordertoeverybodycanunderstandyou.*inorderthat+从句;inorderto+动词原形,两者可以相互转化:IgetupearlyinorderthatIcancatchtheearlybus.=Igetupearlyinordertocatchtheearlybus.例:1.(2021宿迁)Maryshutthewindowjustnow________shecouldkeeptheinsectsout.A.sothat B.when C.till D.after六、结果状语从句1.so...that...so...that...句型中的so是副词,常用来修饰形容词或副词,意思是"如此/这么……以至于……"。(1)常用句型:主语+谓语+so+adj./adv.+that从句TheboyransofastthatIcouldn’tcatchhim.(2)so+形容词+a(n)+单数名词+that从句Shemadesogoodamealthatweallatefartoomuch.(3)so+many/muchfew/little(少)+名词+that从句当名词前有many、much、few、little(少)等词修饰时,句子中要用so...that...而不能用such...that...。Therewassolittlewaterinthejarthatitwasnotenoughforallofus.2.such...that...在such...that...句型中,such修饰名词,意思是"如此……以至于……",such...that...引导四种不同的句子结构。(1)such+a(n)+形容词+单数名词+that从句Thisissuchagoodbookthatallofuslikeitverymuch.(2)such+形容词+复数名词+that从句Theyaresuchgoodstudentsthattheteacherlikesthem.(3)such+(形容词)+不可数名词+that从句Itwassuchfineweatheryesterdaythatwewentswimming.(4)one(no,any,all,many,some,several等)+such+可数名词+that从句TherearemanysuchgoodbooksthatIcan’tdecidewhichonetochoose.口诀:形副用so,名用such,多多少少还用so,little这词要注意,小用such,少用so例:John____________(work)sohardonhisprojectthathedidn’tnoticehismomentertheroom.2.书桌杂乱不堪,作家无心创作。Thedeskis____________________thatthewriterisinnomoodtowriteanything.3.那个小男孩耐心十足地又等了两个小时。Thelittleboywas________________________________________________twohours.七、条件状语从句1.if引导的条件状语从句表示在某种条件下某事很可能发生。Ifwepaymuchattentiontotheearth,we’llhaveabetterworld.2.unless引导的条件状语从句unless的意思是"如果不,除非"。可与if...not互换。YouwillfailinEnglishunlessyouworkhard.*3.as/solongas引导的条件状语从句as/solongas的意思是"只要"Solongasyou’rehappy,Iwillbehappy.*4.once引导的条件状语从句once引导的条件状语从句,意为"一旦……就"Onceyoubegin,neverstop.注意:条件状语从句,主将从现【知识拓展】1.If条件句的同义句:祈使句,and/or+将来时态的陈述句。Workhard,andyouwillmakegreatprogress.=Ifyouworkhard,youwillmakegreatprogress.Hurryup,oryouwillbelate.=Ifyoudon’thurryup,youwillbelate.例:1.(2021扬州)___________wealwayswaitforanotherday,fruitlesslyourlifewillpassaway.A.Until B.If C.Although D.Whether2.(2021南京)Youneedtopractisespeakingeveryday________youhopetoimproveyourspokenEnglish.A.if B.although C.unless D.until3.Ifyouworkharder,you___________(catch)upwithotherssoonorlater.4.Showtheticketstothewaiter,andyou___________(lead)toyourseats.八、让步状语从句引导让步状语从句的连词主要有以下这些:though,although,as;evenif,eventhough;whether...or...;nomatter+疑问词,疑问词-ever。1.although/though引导的让步状语从句可与yet,still或nevertheless不可与but连用。Althoughtheyhavebeentalkingforalongtime,hecannotmakeherbelievehim.Although/thoughheistired,he(still)keepsonworkinghard.Though/Althoughhewaswornout,hekeptonworking.2.evenif/eventhough引导的让步状语从句evenif"即使,纵然"Evenifitrainstomorrow,wewon’tchangeourplan.eventhough"虽然,尽管"EventhoughIdidn’tunderstandaword,Ikeptsmiling.*3.while引导的让步状语从句while"虽然,尽管",多用于正式文体,且多位于句首,相当于although。WhileIunderstandyourpointofview,Idonotshareit.*4.疑问词-ever与nomatter+疑问词引导的让步状语从句whatever/whichever/whoever/wherever/whenever/however,-ever解释为无论例:1.【2020•无锡市】IthinkthecoffeebeansarefromBrazil,________I’mnotcompletelysure.A.because B.since C.though D.whether2.WestillknowlittleabouttheMoon_________menhavelandedonit.(2020南京)if B.sinceC.althoughD.because3.Millie’sresearchpaperisn’tuptostandard_________shehasworkedatitfortwoweeks.(2020常州)A.sinceB.unlessC.ifD.although九、原因状语从句1.because引导的原因状语从句通常用于回答why引出的疑问句,语气最强,除特别强调外,该从句一般位于主句后面。Ididn’tgoabroadwithherbecauseIcouldn’taffordit.Don’tscampyourworkbecauseyouarepressedfortime.2.as引导的原因状语从句通常可以和since换用,as语气稍弱。AsIdidn’tknowtheway,Iaskedapoliceman. 。Asitissnowing,weshallnotclimbthemountain. 3.since引导的原因状语从句Sincetravelingbyairismuchfaster,theydecidedtotakeaplane.Sinceyouwon’thelpme,I’llasksomeoneelse.例:1._________we’vemadethepromise,let’skeeptoitandnotgiveupeasily.(2021无锡)whetherB.SinceC.ThoughD.unless2.Youneedn’tworrysinceyou__________(get)quiteafewoffersfromdifferentuniversities.巩固练习:一、单项选择1.(2020江苏省苏州市)Checkwhatyouhavewritten_______youhandinyourapplicationform.A.since B.before C.after D.while2.Hestayedupverylatethatnight._________Hewokeupinthemorning,thesunwasalreadyhighupinthesky.UntilB.AfterC.WhileD.As3.--Guesswhat?IhappenedtohavemetMatClarkatthepartylastweek.--Ifmymemoryservesmeyoutwo________eachotherforalmosttenyears.A.hadn’tseen B.haven’tseen C.wouldn’tsee D.won’tsee4.Istillkeeptakingexerciseeveryday_____Iambusywithsomanysubjects.A.until B.unless C.though D.because5.—Wilma,listentome,Ithink...—That'senough,Jim.__________yousay,Iwon'tchangemymind.A.Whatever B.Wherever C.Whenever D.Whoever6.Actually,girlscanbe_________theywanttobejustlikeboys,whetheritisapilot,anastronautorageneralmanager.A.whatever B.however C.whenever D.wherever7.WhileIwasspeaking,theboyinblack__________hishandandaskedmeifthepriceofthesebookshad__________alot.A.rose;risen B.raised;risen C.rose;raised D.raised;raised8._____theybelieveenjoyingasportsteamisagoodway______newfriends,Iwouldliketoattendcommunityactivitiestowidenmysocialcircle.A.As;tomakeB.Although;makingC.As;makingD.Although;tomake9.—HaveyoubeentotheRobotRestaurantinourcity?—No.Althoughit_________formorethanayear,I’mfartoobusytogothere.A.hasstartedB.hasbeenonC.hasbeenopenD.hasopened10.______regularexerciseisveryimportant,it’sneveragoodideatoexercisetooclosetobedtime.A.It B.As C.Although D.Unless11.Knowingsomethingwellisnoteasy.Itmaytakeyears______youknoweverythingofsomething. A.since B.after C.before D.until12.___________moreandmorepeoplesurftheInternetfornews,thetraditionalnewspapermaynotdisappearinashorttime.A.Because B.Since C.Though D.Unless13.---Whoisthesingerwithamaskonherface?---It’llbeawhile________weknowtheresult.A.when B.after C.before D.since14.Luckily,herealizedhismistakesandtookactiontoreducetheloss__________itwastoolate.A.before B.when C.until D.as二、动词填空AfewmonthsafterthegirlarrivedinWuxi,she____________(fall)inlovewiththepeopleandculturehere.Showtheticketstothewaiter,andyou___________(lead)toyourseats.Beforeyouhandinthepaper,makesureyou___________(notmiss)anyimportantpoints.---HowcanItakeanonlinecourse?---Justfillintheformandwe________(see)whatwecandoforyou.---CanyougivemesomeinformationaboutParis?---I’mafraidIcan’t,forI_________(be)tothecityonlyonce.TwooftheshootinglocationsforthemoviesHi,Mom___________(receive)morethan30,000touristssincethefilmopenedoverthelongholiday.Thousandsofdoctorsandnurses_________(fight)theviruswhenwewereaskedtostayathomelastyear.Theclassteacheraswellasallthestudents____________(clap)wildlywhenthehostannouncedTomwasthewinnerofthecompetition.WhileIwasmakingaposterforthecomingFather’sDay,apictureofballoons____________(stick)tothebackbecauseofthesuddenphonecall.WearegladtoseethatmanyChinesepeoplerespondtothecallofourcountrysoactivelythattheoldcustoms____________(die)littlebylittle.Theownerwillpostthebooktomeassoonasshe____________(receive)mymoney.Thebodyofayoungladywasfoundbyaccidentwhenthecouple____________(search)fortheirmissingson.---Ohdear,whendidyoucomebacklastnight?Haveyoufinishedyourproject?---Notuntilfive-eighths____________(do).I’mtootiredtosayanythingnow.WheneverI_____________(leave)homealoneathome,Ilockedallthedoorsandwindowstomakesurenobodywouldbreakintomyhouse.Mysisteraswellasmyparents_______________(make)ricedumplingswhenIgothomeyesterdayeveningastheDragonBoatFestivalwascoming.Asthestory(develop),thetruthisdiscoveredlittlebylittle.-Hello,I____________(call)tomakesureifDr.Kingwillbefreetonight.-Holdon,please.三、完成句子青年医生被要求在处理医患关系时要
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