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状语从句(Adverbialclause)状语从句的定义：在复合句中由从句表示的状语称作状语从句，它可以用来修饰谓语（包括非谓语动词）、定语或状语，或是整个句子。状语从句的分类(9类）•时间状语从句(when,whenever,as,while,before,after,since（自从）,till/untill,assoonas等）•地点状语从句(where,wherever)•方式状语从句(as,asif=asthough)•原因状语从句(because=inthat,since(既然）=nowthat）•目的状语从句(sothat,inorderthat)•结果状语从句(so…that…,such…that…注意区别as)•条件状语从句(if,unless,as/solongas,once...)•让步状语从句(as,though,although，evenif,eventhough)•比较状语从句(than,as..as,notso…as;the+比较级，the+比较级）I.Adverbialclauseofcondition(条件状语从句)I.if“如果”;虚拟语气和陈述语气II.unless(=ifnot)意为“除非,如果不”。III.incase(万一，以防万一）,onconditionthat，providing，provided(that)，supposing，suppose(that)IV.as/solongas（只要）once(一旦）“假如，假使，在……条件下”(比if更书面化)1.Themanwillhavetowaitallday_____thedoctorworksfaster.A.ifB.unlessC.whetherD.that2.TheWTOcan’tliveuptoitsname____itdoesn’tincludeacountrythatishometoonefifthofmankind.(NMET2000)A.aslongasB.whileC.ifD.eventhough3.Ifyouwanttodothejoboncemore,you’dbetterBemorecareful___youmakemistakes.A.incaseB.whenC.whereD.sothat4.Intimeofseriousaccidents,___weknowsomebasicthingsaboutfirstaid,wecansavelives.A.WhetherB.untilC.ifD.unlessA1.though,although(尽管）but,still(yet/nevertheless)Thoughadv.放于句末，“然而，可是，不过”Shepromisedtophone.Iheardnothing,though.2.as（尽管，必须用倒装though）3.evenif,eventhough（即使）4.whether...or...（不论是否…）5.nomatter+疑问词疑问词-everhoweverwhatever6.While放于句首II.Adverbialclauseofconcession(让步状语从句）Whetheryoucomeinwinterorsummer,youwillfinditaniceplacetolivein.Whateverthereason(is),herefusestogo.Shewouldtellhimwhateverthenewshegot.Nomatterwhoyouare,youmustkeepthelaw.=whoeveryouare,youmustkeepthelaw.Whoevercomeswillbewelcome.1.Youshouldhaveagoodrestattheweekend____muchworkyouhavetodo.(期末测试题)A.howeverB.whicheverC.whateverD.evenif2.Theoldtowermustbesaved,______thecost.（05浙江）A.howeverB.whateverC.whicheverD.wherever3.Much____theyoungcoupleneededmoneytomakethedownpayment(付首期)fortheapartment,theywouldn’tasktheirparentsforhelp.A.althoughB.asC.evenifD.while---WhatshouldIweartoattendhisweddingparty?---Dress_____youlike.A.WhatB.howeverC.whateverD.ifanyB_______从句中谓语v.既可是延续性的//终止性的.________“一边一边”，“随着”，区别with________引导的从句中的动词必须是延续性的whenaswhile1when//as//whileAsthetimepassesby,IknowmoreandmoreEnglishwords.Withthepassingoftime,IknowmoreandmoreEnglishwords.时间状语从句应注意的问题II.As的用法小结(非常6+1)1)Asshegrewolder,shegainedinconfidence.3)Asweallknow,the2008OlympicGameswasheldonAugust8th.2)Alwaysdototheothersasyouwouldbedoneby.4)Muchashelikesthecar,hecan’taffordit.Objectasyoumay,I’llgo.Childasheis,heknowswhatistherighttodo.5)Astheweatherissobad,wehavetodelayourjourney.6)—whatdoyouthinkoftheconcert?---Ireallyenjoyit.Ididn’texpectitwasaswonderful.(asitis)7)Heisfamousasamoviestar.1）时间状语从句当…时候，一边…一边（伴随）2）方式状语从句(as不做成分）按照…方式5）原因状语从句因为，由于6）比较状语从句（as…asnotso….as)7）介词：作为3）定语从句(as做成分)正如，好像asweallknow/asisthecase/asisknowntoall/aswecansee4）让步状语从句(倒装,从句中状语，表语，动词置于as之前)虽然，尽管连词6种用法+介词1种用法：III.While用法小結1.时间状语从句：当…时候，从句动词多为延续性的，或多为进行时态3连词，表示对比然而，可是2让步状语从句(置于句首)：虽然,尽管1)WhileIamwritingthis,youcanbedoingsthelse.3)Somepeoplewastefoodwhileothershaven’tenough.2)WhileIadmitheisn’tperfect,Istilllovehim.1.Iwasdoingmyhomeworkwhenhecame.=Hewasabouttogooutwhenthephonerang.3.Hehadjustarrivedhomewhenhismotheraskedhimtohavedinner.2.Iwasonthepointofgoingoutwhenhecame.Summary1:表示“这时突然的”句型bedoing…when…正在做…这时突然beonthepointofdoing…when…=beabouttodo…when…(正要做…这时突然…）hadjustdone…when…(刚做完某事这时突然）IV.When用法小結：1）Itwasfoolishofyoutotakeataxiwhenyoucouldeasilywalktherein5minutes.2）Whydidyoutraintobeateacherwhenyoudidn’tlovechildren?3）Howcanweexplainittoyouwhenyouwon’tlisten.Observethefollowingsentencesandtellthemeaningof“when”4）既然你有这么好的工作，为什么还要找新的呢？5）既然你有车，为什么还要步行呢？Summary2:When表示在…情况下，可译成既然…Finishtheexercises:Possibleanswers:1.Whydoyouwantanewjobwhenyou’vegotsuchagoodonealready?2.Whydoyouwalkwhenyouhaveacar?(1)assoonas…(2)hadhardly/scarcelydone…whensb.did…hadnosoonerdone…thansb.did…(一…就…）(3)Thesecond/minute/moment/instant…;(4)directly,instantly,immediately(连词）VI.表示“一…就…”的句型此外：注意时间状语从句中n.做conj.thefirst/second/lasttime…;everytime,nexttime，bythetime（连词)第…次…ThefirsttimeIsawhim,Ifellinlovewithhim.IfellinlovewithhimthefirsttimeIsawhim.I’llvisithimnexttimeIgotoBeijing.Summary:Itis/was/willbe+时间段+before…(多久之后才…）Itisn’t/wasn’t/willnotbe+时间段+before…(不久之后就….)before:还没来得及…就….1)Itwillbealongtimebeforewemeetagain.2)Itwasalongtimebeforewemetagain.3)Itwon’tbelongbeforehegainssuccess.4)—Whydid’tyoutellhimaboutthemeeting?---HerushedoutoftheroombeforeIcouldsayaword.VIITheuseof“before”时态的一致和含义summary1:Ithasbeen/is+时间段+since…过去时Ithadbeen/was+时间段+since….过去完成时（从…开始已经多久了）Ithasbeenalongtimesincewelastmet.Itwastenyearssincewehadhadsuchawonderfultime.Translatethefollowingsentences:IthasbeenfouryearssinceIwasastudent.IthasbeenyearssinceIenjoyedmyselfsomuch.VIII.Theuseof“since”:Summary2:since从句中的动词如果是延续性动词，应该反着译IX.till/until•until/till“直到…止”(肯定句中，主句V.延续V.)•not…until“直到…才”(否定句中，主句V.终止V.)•until可用于倒装句和强调句•till不用于句首•Shedidn’tfinishedherhomeworkuntilIreturnedhome.•NotuntilIreturneddidshefinishherhomework.•ItwasnotuntilIreturnedhomethatshefinishedherhomework.原因状语从句1.For的用法2.在强调句中只能用beca