状语从句课件

状语从句状语从句时间状语从句地点状语从句原因状语从句目的状语从句结果状语从句条件状语从句方式状语从句让步状语从句比较状语从句1.时间状语从句1)由连词when,while,as,assoonas,before,after,since,till/until等引导。•主句用将来时，从句常用一般现在时表将来Iwilltellhimwhenhecomesback.2)while,when,as辨析While引导的时间状语从句只指一段时间，强调某一段时间内，主从句动作同时发生。从句动词常是延续性的When既可以指一个时间点,也可以是一段时间，可表示主从句的动作同时或先后发生。从句动词可以是延续性的，也可以是非延续性的。As强调主句﹑从句动作相并发生,译为”一边…一边…”Whenhereturned,hiswifewascooking.Whilehewasreading,hiswifewascooking.Hehurriedhome,lookingbehindashewent.另外,when/while还作并列连词,连接并列分句,while表示“而,可是”如:IlikereadingwhilemywifeenjoyswatchingTV.when表示“就在这时”在下列结构中，表示某件事正在发生或刚刚发生，另一动作同时发生。1.beabouttodo…when…2.bedoing…when…3.haddone…when…e.g.Wewereabouttostartwhenitbegantorain.Iwasplayingcomputergameswhenmomcamein.Hewasabouttogotobedwhenthedoorbellrang.TheywerewatchingtheWorldCupwhensuddenlythelightswentout.Theyhadjustarrivedhomewhenitbegantorain.3)until/till(不用于句首)“延续的动词（肯定式）+until”表示“直到…为止”Iwaitedforhimuntilhecameback.动词（否定式）+until”表示“直到┅才”Hedidn’tgotobeduntilhefinishedhiswork.Notuntilhesawithimselfdidhebelieveit.注意:notuntil在句首时要倒装改错并翻译•Iwenttobeduntilmyfathercameback.•Iworkeduntilhecameback.•Ididn’tworkuntilhecameback.•PleasewaituntilIarrived.4)表示“一…就…”的句型assoonas（体现主将从现）,once,themoment/minute/secondAssoonashecomes,I’lltellhim.ThemomentIsawhim,Irecognizedhim.Ileftoncetheclockstruck5.翻译:我一到达加拿大，就给你写信5)Everytime,eachtime,whenever也可以引导时间状语从句EverytimeIcaughtacold,Ihadpaininmyhead.6)before和since1）before“还未…就…”,“不到…就…”，Wehadn’trunamilebeforetired.Doitnowbeforeyouforget.MyfatherhadleftforCanadabeforetheletterarrived.2）Itwillbe+时间段+beforesb.do多久之后才…ItwillbetwoyearsbeforeIcomeback.几种特殊句型与强调结构的区别：Itis+时刻+when…Itis/hasbeen+段时+since…Itwillbe/was+段时+beforeItwillbefiveyears_______wemeetagainItwasnotlong_______IrealizedIwaswrong.Ithasbeenjustaweek______wearrivedhere.Itwashalfpastten______theyreachedhome.beforebeforesincewhenbefore的用法：A：表“还未来得及…就…”B：表“过一段时间才…”，Since还可以和现在完成时态连用•IhavebeeninBeijingsinceyouleft.•HehaslivedinLuoyangsincehewasborn.•Hehaskeptthebooksinceaweekago.•注意：since引导的从句要用过去时或者表示过去的时间段，主句用现在完成时。•bythetime从句用一般过去时，主句用过去完成•到---时从句用一般现在时，主句用将来完成或一般将来。•Bythetimeyoucameback,Ihadfinishedthisbook.•Bythetimeyoucomehere,Iwillhavefinishedthiswork./Iwillfinishthework.1.Wewereswimminginthelake_____suddenlythestormstarted.A.whenB.whileC.untilD.before2.Youcaneatfoodfreeinmyrestaurant_____youlike.A.wheneverB.whereverC.whateverD.however3.Itisalmostfiveyears____wesaweachotherlasttime.A.beforeB.sinceC.afterD.when4.TheAmericanCivilWarlastedfouryears_____theNorthwonintheendA.afterB.beforeC.whenD.then5.--DidJackcomebackearlylastnight？--Yes.Itwasnotyeteighto'clock_____hearrivedhome.A.beforeB.whenC.thatD.until6.--Whydidn‘tyoutellhimaboutthemeeting？--Herushedoutoftheroom____Icouldsayaword.A.beforeB.untilC.whenD.after7.---DidyouremembertogiveMarythemoneyyouowedher?---Yes,Igaveittoher______Isawher.A.whileB.themomentC.suddenlyD.once8.---Whatwasthepartylike?---Wonderful.It’syears___IenjoyedmyselfsomuchA.afterB.beforeC.whenD.since9.Howcanyouexpecttolearnanything____youneverlisten？A.incaseB.evenifC.unlessD.whenHowcanyouhopeformercyyourselfwhenyoushownone?既然你不宽恕别人，你自己又怎能希望得到别人的宽恕呢？2.让步状语从句引导词有：although,though,evenif/though,as,while（尽管）whether…or…(无论…还是…),whoever=nomatterwhowhenever=nomatterwhenwhatever=nomatterwhatwherever=nomatterwherehowever=nomatterhow让步状语从句1).although与though可互换，都可以与yet，still连用，但不能和but连用.2).as引导让步状语从句，须用倒装语序。3)however引导让步状语从句时后紧跟形容词或副词。(此点考查频率最高)。4).While也可引导让步状语从句，5).Whatever修饰名词，“无论什么”，however修饰形容词、副词，“无论多么，无论怎么”。6).evenif，eventhough(即使)1)as引导的让步从句要倒装，句型为：形容词/副词/名词（不带冠词）/动词（原形）+主语+谓语Youngasheis,heknowsalot.MuchasIlikeit,Ican’taffordit.Farmerasheis,heiswell-educated.TryasImight,Icouldn’tliftthestone.2）although不倒装，though可倒装也可不倒装,as必须倒装Although/Thoughhewasillhedidn’tstopworking.3）nomatter+疑问句引导让步状语从句Nomatterwhathappened,heshouldn’tmind.=Whateverhappened,heshouldn’tmind.Nomatterwhoyouare,youshouldobeythesocialrules.=Whoeveryouare,youshould…4)whether…orWhetheryoubelieveitornot,itistrue.________yousay,hewon’tbelieveyou.________youare,youmustobeytherules.Youmaygo_________youlike._________shecomes,shesaysthesameword.Iwillbuythepicture,________expensiveitis.__________youbelieveit_____not,itistrue.1._______，IhavetoputitawayandfocusmyattentiononstudythisweekA.HoweverthestoryisamusingB.NomatteramusingthestoryisC.HoweveramusingthestoryisD.Nomatterhowthestoryisamusing2.____Iacceptthatheisnotperfect，IdoactuallylikethepersonA.WhileB.SinceC.BeforeD.Unless3.Youshouldtrytogetagoodnight'ssleep______muchworkyouhavetodoA.howeverB.nomatterC.althoughD.whatever4.Allowchildrentovoicetheiropinion，____theyaredifferentfromyourown.A.untilB.evenifC.unlessD.asthough5.___hehaslimitedtechnicalknowledge，theoldworkerhasalotofexperienceA.SinceB.UnlessC.AsD.Although3.地点状语从句引导词有:where,wherever注意：不要混同于where引导的定语从句与定语从句的区别：where引导定语从句，从句前有一个表示地点的名词。Gobackwhereyoucamefrom.Gobacktothevillagewhereyoucamefrom.(有志者，事竟成）I’llfollowyouwhereveryougo.Wherethereisawill,thereisaway.■地点状语从句1)where.wherever的区别；where指“在某个地方”，wherever指“无论哪里，在任何一个地方”，2)注意状语从句和定语从句的区别。3)注意在状语从句中不可使用介词+which引导。1.