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状语从句讲练1表示时间、地点、原因、目的…Wesleepatnightathome.必须符合“从句的三个必须”必须是句子；必须有连接词；必须是陈述句请参考本网站“简单句结构---主谓宾”、“从句基础篇—从句的三个必须”视频2定义•状语从句•状语从句同副词，介词词组等作状语一样，用于修饰谓语，说明谓语动作的时间，地点，方式，手段，条件，程度，比较，原因，目的，结果等1.Igetupat6:002.Itisdark3.Igetupwhenitisdark3用作状语的从句叫做状语从句。引导状语从句的关联词是一些从属连词。•例：•Whenyoucrosstheroad,youmustbecareful.当你过马路时要小心。（when是从属连词）•IwaslatebecauseImissedthebus.我迟到了，因为我误了公共汽车。（because是从属连词）.•Ifsheasksme,I’lltellher.她如果问我，我就告诉她。（if是从属连词）•Youlookasifyouneedarest.•你像是需要休息似的。（asif是从属连词）.状语从句4状语从句的种类1、时间状语从句when,while,assoonas,since,until,before,after2、条件状语从句if3、结果状语从句so…that4、比较状语从句than5、原因状语从句because6、让步状语从句although,though7、地点状语从句where5前引：根据主从句的三种时间关系，分为主从句同时发生、主从句都没有发生、主从句一前一后发生三类句型，每种句型分别对应独特的句式WhatwereyoudoingwhentheUFOarrived?WhatareyoudoingwhentheUFOarrives?Iwouldleaveifhecame.Iwillleaveifhecomes.ThetrainhadbeenawaywhenIarrived.过去配过去过去配过去现在配现在现在配现在6前引：根据主从句的三种时间关系，分为主从句同时发生、主从句都没有发生、主从句一前一后发生三类句型，每种句型分别对应独特的句式过去类：….过去进行when一般过去现在类：…现在进行…when一般现在过去类：过去将来when一般过去现在类：一般将来when一般现在过去完成when一般过去7当我在开车时，她在玩滑板车。WhileIwasdriving,shewasplayingthescooter.时间状语从句8•(1)时间状语从句常用when,as,while,before,after,since,till,until,assoonas等连词来引导。例如：•Itwasraininghardwhengottoschoolyesterday.•Whilehewasdoinghishomework,thetelephonerang.•Ashewalkedalongthelake,hesanghappily.•HehadlearnedalittleChinesebeforehecametoChina.•Afterhefinishedmiddleschool,hewenttoworkinafactory.9•(2)在时间状语从句里，主句为将来时，从句用一般现在时•I’llringyouupassoonasIgettoNewYork.•Iwilltellhimeverythingwhenhecomesback.•Hewon’tbelieveituntilheseesitwithhisowneyes.•（3）若就时间状语从句提问，应用when来提问。如：•Whileweweresweepingthefloor,thebellrang.(就划线部分提问10while/when辨析•when/while+doing•When/whilereading,hefellasleep.•when+终止性、延续性动词•while+延续性动词•Whentheteachercamein,Iwassleeping.•=While/WhenIwassleeping,theteachercamein.•when(就在这时)•Iwassleeping,whensomeoneknockedatthedoor.11•①when表示点时间时，从句中用短暂性动词；表示段时间时，用持续性动词。•WhenIgothome,myfamilywerealreadyhavingdinner.•我到家的时候，全家已在吃晚饭。•（when表示点时间）•Whentheywerestilltalkingandlaughing,theteachercamein.•当他们还在说笑的时候，老师进来了。（when表示段时间）•Hewavedahellowhenhesawher.•当他看见她的时候，就挥手打了个招呼。（when表示点时间）•Whenyouthinkyouknownothing,youbegintoknowsomething.•当你认为自己一无所知的时候，就开始知道一些事情了。（when表示段时间）•当when意思是正当……时候（andatthatmoment）时，when只能跟在前一分句之后。•Hewasabouttogotobedwhenthedoorbelrang.•他正要上床，忽然门铃响了。•TheywerewatchingtheWorldCupwhensuddenlythelightswentout.•他们正看着世界杯比赛，突然灯灭了。•Theyhadjustarrivedhomewhenitbegantorain.•他们刚到家，天就开始下雨了。12•①while通常表示一段时间，从句中宜用持续性动词作谓语。•Strikewhiletheironishot.•趁热打铁。•Shefellasleepwhileshewasreadingthenewspaper.•她在看报的时候睡着了。•②while有时可以作并列连词，表示对比，可译成……而……。•IamfondofEnglishwhilehelikesmaths.•我喜欢英语而他却喜欢数学。•Wesleptwhilethecaptainkeptwatch.•我们睡觉而上尉担任警戒。13※while的其他含义：WhileIwaswalkingdownthestreet,Icameacrossanoldfriend.(while=_______)Helikespopmusic,whileIamfondoffolkmusic.(while=_______)WhileIreallydon’tlikeart,Ifindhisworkimpressive.(while=___________)Whilethereislifethereishope.(while=_______________)whenalthoughaslongasbut14※as:当…时；一边…一边；随着……＊某事一发生，另一事立即发生＊两个动作同时发生Asthedaywenton,theweathergotworse.Asthecaptainpassedme,Iaskedhimwhethertherewasanyhopeofsavingtheship.15____________hehadfinishedhishomework，hetookashortrest．____________hewalkedalongthelake，hesanghappily.____________shewastypingtheletter,thetelephonerangwhen，as，while区别①when②while③asWhenAsWhile时间点延续性动词“一边..........一边”时间段终止性动词16※before①在……前ItwillbehalfayearbeforeIcomeback.Itwon’tbehalfayearbeforewemeetagain.Wesailedfourdaysandnightsbeforewesawtheland.Wehadn’trunamilebeforehefelttired.④肯定句“才”否定句“就”②itwillbe+一段时间before......多久之后才...③itwon’tbe+一段时间before......不久就....17※till,until和not…until：1.until/till引导时间状语从句用于肯定句时，主句的动词是延续性动词，表示动作或状态一直持续到until/till所表示的时间，意为“某动作一直延续到某时间点才停止”。如：Wewaiteduntilhecame.2．用于否定句时，主句谓语动词是非延续性动词，从句为肯定，意为“某动作直到某时间才开始”。如Hewon’tgotobedtill/untilshereturns.181.______hecomesheretomorrow,Iwillcallyou.2.________hewaswalkinginthestreet,hemetTim.3.Shesang____sheworked.4.Therewasanapplause_______________________sheappearedonthestage.WhenWhile/Whenasassoonas195.Itwon’tbelong______hefinisheshiswriting.6.______hehadfinishedhiswork,heleftthere.7.Itistwoyears______hecamehere.8._______shetoldme,Ihadnoideaofwhattheyhadsaid.beforeAftersinceEverytime/eachtimeUntil20练习:1.I’llwritetoyou_______Igetthere.A.whileB.beforeC.assoonasD.by2.Hehaslivedinthecity_________hecamebackfromAmerica.A.whenB.beforeC.sinceD.after3.Wewon’tleavehere_______ourteachercomesback.A.untilB.sinceC.afterD.assoonas4.Ihadtofinishthepicture________mymothercameback.A.untilB.beforeC.afterD.while5.Johnfellasleep________hewaslisteningtothemusic.A.afterB.beforeC.whileD.assoonas中考题型时间状语从句212.地点状语从句地点状语从句由where,wherever等引导。例如：•Youcantakeawalkwhereveryouliketo.•---Mom,whatdidyourdoctorsay?---Headvisedmetolivewheretheairisfresher?22我扁你是因为你又偷我的菜。Ibeatyoubecauseyoustolemyvegetablesagain.原因状语从句233.原因状语从句•原因状语从句通常由because,as,since,nowthat,considering(that),seeing(that)等词引导。•because语气较强，用以回答why问句•as语气较弱，较口语化，所表示的原因较明显。•since语气较弱，常表对方已知的事实，相当于汉语的“既然”。246.Ieatpotatoes_________Ilikethem.我吃土豆是因为我喜欢土豆。7.____Ididn’tknowtheway,Iaskedapoliceman.我由于不知道路，因而问警察。8._______youwon’the