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Itis5years_____theygotagooddrink.Itwillbe5years______theygetmarried.Itisyears____hewasinthecompany.Hesaiditwasyears____hemethimagain.Itwasmanyyears____hebecameamusician.Itwasmidnight____hecameback.Itwasatteno’clock____hereturnedhome.Itseemedonlyseconds____theboyfinishedwashinghisface.sincesincebeforebeforewhenthatbeforebefore状语从句theAdverbialClause状语从句在句中作状语，修饰主句中的动词、形容词或副词等。状语从句放在主句之前时，常用逗号分开；放在主句之后，一般不用逗号。时间状语从句分类：地点状语从句结果/程度状语从句目的状语从句条件状语从句让步状语从句原因状语从句比较状语从句方式状语从句When引导状语从句1.Whentheygothome,Iwascooking.When(youare)introuble,visithim.2.HewasabouthalfwaythroughhismealwhenIrealizedIhadnotactuallyhandedmymoneytothecashier.Iwasbeabouttogooutwhenitbegantorain.Iwasonthepointofgoingoutwhenitbegantorain.Iwaswalkinginthestreetwhenatigerappeared.Ihaddriven50kmwhenIrealizedmyticketleftathome.当…时候，可与短暂性/延续性动词连用这时=andatthattime4.Hardlyhadshegonewhenithappened.Scarcely…when…Nosooner…than…NosoonerhadIarrivedatthestationthanitbegantorain.5.Howcanyouhopeforhelp,whenyoudon’thelpothers.Howcanyouexpecttolearnanythingwhenyoudon’tlisten.6Whywereyouherewhenyoushouldbeinschool？本该，…而…刚---就---While1.ShecalledwhileIwasout.HewatchedTVwhile(hewas)eating.Canyoubuymesomestampswhileyouareinthepostoffice?I’llsellthecarwhileitstillruns.2.WhileIadmithehasshortcomings,Istilllikehim.3.Whilethereislife,thereishope.4.Iearnonly50dollarsaweek,whilesheearns80dollars.当…时，趁着与延续性动词连用尽管=although只要=aslongas然而as引导的状语从句”聚会”as引导时间状语从句1.Ashetalkedon,hegotmoreandmoreexcited.2.Hesangsongsashewastakingabath.3.Astimewentby,hevaluedtimeallthemore.4Aswegetfurtheralonginthebook,we’llbedealinginsomedetailwithspecificprocesses…______theproductionup,thefarmerhasagoodharvestyear.5Asourproductssellbetter,so_____thefameofourcompany.AwillBdoesCisDhasIfhedoesn’tgo,nor____I.一边…一边随着Withwillas让步状语从句(只用倒装)将表语、副词、或动词提前，though倒不倒皆可，although不倒装；though/although不可和but连用，但可与still/yet连用。Tiredastheywere,theywalkedon.Childasheis,heknowsalot.（省略冠词）MuchasIlikeit,Iwillnotbuyit.Strangeasitmayseem,nobodywasinjuredintheaccident.TryasImight,Icouldn’tliftthestone.WheninRome,doastheRomansdo.Heworksasfastasaskilledworker.Asitissnowing,weshallnotgotothepark.比较状语从句方式状语从句原因状语从句Bythetime的用法Bythetimehewas12,hehadtravelledtomorethan30countriestogethisdiseasescured.BythetimeIgraduatenextyear,Iwillhavelivedherefor5years.Bythetimethatthefirstradiomessage______ontheearth,thespaceshipwillhavebeenflyingthroughspacefor17hours.A.willarriveB.havearrivedC.isgoingtoarriveD.arrivestill/until的区别until可放在句首，也可放在主句之后；till一般不放句首.Notuntilhismothercameindidhegetup.Itwasnotuntilhismothercameinthathegotup.在肯定句中表示“直到…为止”主句为延续性动词；Iwaitedtill/untilhearrived.在否定句中表示“直到…才”主句常用非延续性动词。Ididn’tleavetill/untilhecameback.Simonthoughthiscomputerwasbroken________hislittlebrotherpointedoutthathehadforgottentoturniton.A.untilB.sinceD.afterD.because●Since的特殊用法1.It’sbeenayearsinceIworkedhere.2.Ithasbeentwoyearssincehejoinedthearmy.Before1Lookbeforeyouleap.Allthingsaredifficultbeforetheyareeasy.2Itwillnotbelongbeforetheyunderstandeachother.Itwasaweekbeforehecouldtellhisexperience.3AwholedaypassedbeforeIrealized.4HehadmeasuredmebeforeIcouldgetinaword5Shewassuchaproudpersonthatshewoulddiebeforeshewouldadmitshewaswrong.IwouldgiveupmyjobbeforeI’dagreetobetransferred.I’dshootmyselfbeforeIapologizedtohim!在…之前还没等就…来不及宁愿，与其…不如…不知不觉地……之后才；不多久就“原因种种”Because:语气最强，表直接原因，在回答why问句和强调结构中，只用because，它可和强调词only,merely,just及否定词not连用。所引导的从句常位于主句之后，只有强调句时才至于主句之前。Since语气较弱Sinceeveryonemakesmistakes,you..As语气最弱Ashewasinahurry,helefthis..For:并列连词，多用来表示推断性的原因，放在主句之后，表前果后因。Becauseof+N./名词性短语/what从句1.“Whyaren’tyoucomingwithustotheconcert?””___Ihavegotabadheadache.”A.AsB.SinceC.ForD.Because2.Itwas____hewasillthathedidn’tcome.because3.______alltheseatswerefull,hehadtostandup.A.ForB.AsC.BecauseofD.Because4.Thedaybreaks，______thebirdsaresinging.5.Herealizedthatshewascrying________whathesaid.forbecauseof状语从句的省略问题If，once,when,while,unless,though,+doing/done/adj1.Once_______(see),itcanneverbeforgotten.Once————————，itcanneverbeforgotten．2When_______whyhewasabsent,hemadenoanswer.AaskingBbeingaskedCaskedDheasked3Iwon’tgounless______A.askingB.beingaskedC.askedD.heaskedseenitisseen4.______thestreet,shewasknockeddownbyacar.ATocrossB.WhencrossedC.WhilecrossingD.Whencrossed5.When_______,thebooksmustbereturnedtothelibrary.AreadB.toreadC.readingD.toberead6.Though_______thoroughly,theairplanemightstillhavetroubleduringtheflight.A.testedB.beingtestedC.wastestedD.hadbeentestedIfnecessary,ifpossible,iftrue,ifany1.Shehasfinishedtheworkearlierthan(ithasbeen)expected2.Asif/asthough+n/adj/adv/prep/doing/done/todoShetalkedtothestrangerasifabsent-minded.Heopenedthedesk,asifinsearchofsomethingimportant.Theboyisrunningimpatientlyhereandthereasifsearchingforsomethinglostonthesportsground.Thefootballplayerisrollingonthegroundasifbadlyhurtintheleg.Hemovedhislipsasiftospeak.When引导定语从句中1)Itwasteno’clock____hecameback.2)Itwasatteno’clock____hecameback.3)Gonearethedays_____theyworkedtogether.4)Gonearethedays_____theyspenttogether.5)Youhavetowaittwomoreweeks,______themanagerwillbeback.6)You’llhavetow