时间状语从句ppt课件

AdverbialClauses,条件状语,原因状语,目的状语,地点状语,比较状语,结果状语,时间状语,让步状语,方式状语,掌握状语从句的关键,1.准确掌握每一个连词的含义。2.注意主句和从句的时态呼应。,Adverbialclausesoftime,4,(1)as,while,when,Whichdoyouchoose?Imgoingtothepostoffice._youarethere,canyoubuymesomestamps?AAsBwhileCBecauseDIf,While,when在句中的不同含义:WhileIwaswalkingdownthestreet,Icameacrossanoldfriend.(while=_)WhileIreallydontlikeart,Ifindhisworkimpressive.(while=_)Helikespopmusic,whileIamfondoffolkmusic.Strikewhileironishot.,Theywerewalkingdownthestreetwhentheysawanaccident.2)Ihadjustgothomewhenitbegantorain.3)Iwasabouttogoswimmingwhenourguidestoppedme.4)Itscoldwhenitsnows.,AsIleftthehouse,Iforgotthekey.2.AsIgetolder,Igetmoreoptimistic.3.Helookedbehindashewent.4.Astheweatherissobad,wehavetostayhome.5.Youcandoitasyoulike.6.Oldasheis,heisstillenergetic.,Judgethemeaningsof“as”.,Fillintheblankswith“when,while,as”1_youmeetawordyoudontknow,consultthedictionary.2.Thestudentstooknotes_theylistened.3._thewindrose,thenoiseincreased.4.Shecalled_Iwasout.5.Wemuststrike_theironishot.6._youhavefinishedyourwork,youmayhavearest.7.Iwasjustreadingabook_shecameintomyroom.,when,as,As,while,while,When,when,before用法1.Wehadsailedfourdaysandfournightsbeforewesawland.2.Wehadntrunamilebeforehefelttired.3.Pleasewriteitdownbeforeyouforgetit.4.BeforeIcouldgetinaword,hehadmeasuredme.,注意：before从句中谓语不用否定式。Beforetheyreachedthestation,thetrainhadgone.,才,还没有/不到就,趁（还未）,还没来得及,含有before的句型结构：1.Itwillbe/was一段时间before“过多久才”It_(还要过两年)heleavesthecountry.It_(过了很长一段时间)beforehegottosleepagain.2.Itwillbe/was+not一段时间before“不多久就”Itwasnttwoyearsbeforeheleftthecountry.Itwasnotlongbeforehecameback.,Since用法1.IhavereturnedhomefourtimessinceIcamehere.2.Shehasbeenworkinghere(eversince)heleftschool.常用句型：Ithasbeen(is)+时间段+since从句“自从有多长时间了”毕业已经有六年时间了。Ithasbeen(is)sixyearssinceshegraduatedfromtheuniversity.,（2）引导时间状语从句的连接词除上述外还有：till,until,Dontgetoffthebusuntilithasstopped.Hewaitedforhisfatheruntil(till)itwastwelveoclock.once,assoonas,directly,immediately,AssoonasIhavefinishedit,Illgiveyouacall.Onceyoushowanyfear,hewillattackyou.Hemadeforthedoordirectlyheheardtheknock.themoment,theminute,thesecond一就hardly/scarcelywhen,nosoonerthan表示“一就Wehadhardlygotintothecountrywhenitbegantorain.Hehadnosoonerarrivedthanshestartedcomplaining.eachtime,everytime,thefirsttime,bythetimeEachtimehecametomycity,hewouldcallonme.ThefirsttimeIcametoShanghai,Iloveditverymuch.Bythetimethedoctorarrived,themanhadcometo.,连接词：because,as,since,nowthat,for,e.g.Hedidntcometoschoolbecausehewasill.,表示“直接”原因。,c.f.Hemightbeill,forhedidntcometoscho