初中英语状语从句ppt课件.ppt

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状语从句Ⅰ 1.Whatisit?用来修饰主句或主句的谓语2.whatarethesorts?时间状语从句条件状语从句地点状语从句原因状语从句让步状语从句目的状语从句结果状语从句比较状语从句 1.时间状语从句 Examples:When/As/Whilehewaseatinghisbreakfast,heheardthedoorbell.IthasbeentwoyearssinceIcametoBeijing.Wheneverwemetwithdifficulties,theycametohelpus.IgotintouchwithhimimmediatelyIreceivedhisletter.Mysistercamethemomentshegotmymessage.EverytimeIcatchacold,Ihavepaininmyback. 从句动词为非延续性动词:Theboycriedwhenhesawhismother.从句动词为延续性动词:while强调“在……的同时”as强调“伴随”的状态，“一边…一边…”TomfellasleepwhileJerrywasgivingalecture.Hesangashewentalong．辨析：when/while/aswhenwhile,as,when均可 时间状语从句的破题方法判断主句和从句动作的延续性非延续性：when延续性：when,while,as同时while伴随as 1.Hetransplantedthelittletreetothegarden____itwasthebesttimeforit.（2007上海）A.whereB.whenC.thatD.until2.—AreyoureadyforSpain?—Yes.Iwantthegirlstoexperiencethat____theyareyoung.(2008上海)A.whileB.untilC.ifD.before真题演练 （1）until/till延续性动词+肯定语气：到……为止e.g.Walkyoucometoawhitehouse.非延续性动词+否定语气：到……才开始not…untile.g.Webeginourdiscussionhecameback.其他引导词：tilldidn´tuntil 真题演练1.Agoodstorytellermustbeabletoholdhislisteners’curiosity_______hereachestheendofthestory.（2003上海）A.whenB.unlessC.afterD.until2.Myuncle___untilhewasforty-five.（2000上海）A.marriedB.didn'tgetmarriedC.wasnotmarryingD.wouldmarry (2)once,themoment,assoonas表示“一…就…”e.g.hegoes,wecancleanup.Once(3)before,after表示时间的先后e.g.Ifoundhispenhehadleft.after 真题演练1.A dozen ideas were considered ____thearchitect decided on the design of the building.（2006上海）A. becauseB. beforeC. whetherD. unless 两种since的句型since：①.主句用现在完成时（或现在完成进行时）时，从句中用一般过去时e.g.I’velivedhereIcametoBeijing.②.Itis(hasbeen)…..+since+一般过去时fiveyearsIbegantolearnEnglish.“自…以来”sinceItissince 扩展练习1.Thatwasreallyasplendidevening.It’sbeenyears____Ienjoyedmyselfsomuch.whenB.thatC.beforeD.since2.They___friendssincetheymetinShanghai.A.havemadeB.havebecomeC.havebeenD.haveturned 2.条件状语从句逻辑关系：引导词：e.g.Youwillpasstheexamyouworkhard.=Youwillnotpasstheexamyoudon’tworkhard.假设①if,unless(ifnot)notunlessif ②在……条件下：aslongase.g.Igetmyfather’spermission,I’llgo!Aslongas 条件状语从句题的破题方法1.读题，确认从句和主句2.分析从句和主句之间的逻辑关系（正面条件/反面条件）3.根据逻辑关系选择合适的引导词正面条件：if,aslongas反面条件：if…not,unless 正面条件真题演练1.Smallsailboatscaneasilyturnoverinthewater_____theyarenotmanagedcarefully.（2007上海）A.thoughB.beforeC.untilD.if 2.____thereisasnowstormorsomeotherbadweather,themailalwayscomesontime.（2007上海春季）A.BecauseB.IfC.WhenD.Unless反面条件 3.地点状语从句常用引导词:_________特殊引导词:________________________________①Airwillbeheavilypollutedtherearefactories.②yougo,youshouldworkhard.③DoyouknowIcanbuyasecond-handcomputer?④HefollowsmeIgo.wherewhereveranywhereeverywherewhereWhereveranywhereeverywhere Wherethereisawill,thereisaway.______________________无论你去哪里,我都去。______________________Whereveryougo,Igotoo．有志者事竟成。真题演练 4.原因状语从句(1)引导原因状语从句的连词有_________________________(2)  because,since,as,for用法比较：because:e.g.---Whyareyoulate?---Becausethereisatrafficjam.becausesinceasnowthat语气最强，回答why时用because，所表示的是直接理由，因果关系不能同so连用。 since/nowthat:e.g.Sinceyouhavegotenoughmoneywithyounow,youcancomeandbuyitnexttime.as:e.g.Ashehadbeenreadyfortheworst,hewasnotdisappointedattheresult.“既然…..”表对方已知的事实或理由，常放在句首。“由于….”语气较弱，较口语化，表明显的原因或已知的事实，常放在句首。 for:e.g.Itmusthaverainedlastnight,forthegroundiswet.语气最弱，不能放在句首。 ______everybodyknowsaboutit,Idon’twanttotalkanymore.（2009上海）A.ForB.EvenC.SinceD.However真题演练 状语从句Ⅱ敬请期待：