时间状语从句-ppt课件

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1Istudy,Istrive,Isucceed!时间状语从句3时间状语从句P286一、什么是时间状语从句二、时间状语从句的位置三、时间状语从句连接词4找出下列句中的时间状语1.Shewasbornin1989.2.IwaswatchingTVat8:00lastnight.3.Iwentouttheclassroomatonce.4.Hehasbeenasoldiersince1941.________________________________________________________________5找出下列句中的时间状语1.Shewasbornwhenherbrotherwas2yearsold.2.IwaswatchingTVwhilemymotherwaschattingonthephoneat8:00lastnight.3.IwentouttheclassroomassoonasIsawher.4.HehasbeenasoldiersincetheAnti-JapaneseWarbrokeout._________________________________________________________________________________________________________________________________________________________________________________________6什么是时间状语从句?在句子中充当时间状语的句子。7时间状语从句的位置她六岁会说英语。ShecouldspeakEnglishwhenshewas6.Whenshewas6,shecouldspeakEnglish.句首,句尾均可句尾,不用逗号句首,加逗号与主句隔开8时间状语从句的连接词(1)whenwhileas9时间状语从句的连接词(2)before&aftersinceuntil/till,not…untilassoonas/themoment10时间状语从句的连接词(3)hardly…whennosooner…thanonceeachtime;everytime11(1.1)when当……的时候WhenIwasyoung,Iwenttotownmyself.当我年轻时,我独自进过城。Thedaysgetlongerwhenspringcomes.春天到来时,白天变得更长了。WhenIwas6yeasold,IstartedtolearnEnglish.当我6岁时,我开始学英语。Whenhereceivestheletter,he’lltellus.他收到信后,会告诉我们的。12when忽然WewerewatchingTV,whensuddenlythelightwentout.我们正在看电视,忽然灯灭了。Hewasleavinghome,whensuddenlythetelephonerang.他正要出门,忽然电话响了。when=andthen;atthatmoment正在那个时候常与suddenly连用,表示“正在,即将”之意13(1.2)while当……的时候Hevisitedalotofplaceswhilehewastraveling.他在旅行途中参观了许多地方。while相当于during(介词)主句,从句动作同时发生while表示较长的时间,引导的从句应用延续动词。14while然而我在做功课,弟弟却在玩游戏。Iwasdoingmyhomeworkwhilemybrotherwasplayinggames.我已经工作五年了,而你还在读书。Ihaveworkedforfiveyearswhileyouarestillatschool.15Trueorfalse?ItwasraininghardwhileIgotthere.Falsewhile表示较长的时间,引导的从句应用延续性动词。get是点动词,不能用while引导。ItwasraininghardwhenIgotthere.16(1.3)as随着…/在…同时Asthesunrose,thefogdisappeared.太阳一出来雾就消散。Theycameintothegardenasthemusicstopped.音乐声一停,他们就走进花园。17as一边…一边…Hesmiledashepassed.他路过的时候笑了一下。Hesawthatshewassmilingasshewasreading.他看到她一边看着书一边笑。Helenwaslisteningtothestoryasshewaswashingtheclothes.海伦一边洗衣服一边听故事。18when/while/as在某事发生的过程中另一事发生Justwhen/while/ashewasspeakingtherewasaloudexplosion.正当他在说话的时候,一声巨响。When/while/asIwascooking,thetelephonerang.我正在做饭的时候,电话响了。Iwasbathingwhen/ashecame.他来的时候我正在洗澡。19Sumup:when,whileoras?when,while,as显然都可以引导时间状语从句,但用法区别非常大。一、when+延续动词或瞬间动词;while只能和延续性动词连用;表一段时间(长情景)as+延续动词或瞬间动词(随着…,…边…边…)(短情景)20when,whileoras?①Whydoyouwantanewjobwhenyou’vegotsuchagoodonealready?(get为短暂性动词)你已经找到如此好的工作,为何还想再找新的?②Sorry,Iwasoutwhenyoucalledme.(call为短暂性动词)对不起,你打电话时我刚好外出了。③Strikewhiletheironishot.趁热打铁。(is为延续性动词,表示一种持续的状态)④Thestudentstooknotesastheylistened.(listen为延续性动词)学生们边听课边做笔记。21when,whileoras?二、when从句的谓语动词可以在主句谓语动作之前、之后或同时发生;while和as从句的谓语动作必须是和主句谓语动作同时发生。1.动作一先一后发生,用when①Whenhehadfinishedhishomework,hetookashortrest.当他完成作业后,他休息了一会儿。②WhenIgottotheairport,theguestshadleft.当我赶到飞机场时,客人们已经离开了。afterbefore22when,whileoras?2.从句动作和主句动作同时发生,且从句动作为延续动词时,when,while,as都可使用。①When/While/Asweweredancing,astrangercamein.当我们跳舞时,一位陌生人走了进来。②When/While/Asshewasmakingaphonecall,Iwaswritingaletter.当她在打电话时,我正在写信。23when,whileoras?3.当主句、从句动作同时进行,表示“随着……”;“一边……,一边……”之意时,只能用as。①Asthetimewenton,theweathergotworse.随着时间的推移,天气变得越来越糟糕。②Thelittlegirlssangastheywent.小姑娘们一边走,一边唱。③Thesadmothersatontheroadside,shoutingasshewascrying.伤心的妈妈坐在路边,边哭边叫。24when,whileoras?4.在将来时从句中,常用when,且从句须用一般时代替将来时。①Iwilllendyouthebookwhenhereturnsit.他把书还我,我就借给你。②Whenthemanagercomeshereforavisitnextweek,I‘lltalkwithhimaboutthis.下周,经理来这参观时,我会和他谈谈此事。25Practice用when,while或as填空。1.Shecameup____________Iwascooking.2.Therunnersstarted________thegunwentoff..3.Itwasraining_____Iarrived.4.______________wewereatschool,wewenttothelibraryeveryday.5.pleasedon’ttalksoloud_____________othersareworking.6.Hefellasleep_______________hewasreading.7.Strike_______theironishot.when/while/aswhen/aswhenWhen/While/Aswhen/while/aswhen/while/aswhile26(2.1)before;afterDoitnowbeforeyouforgetit.趁你还没忘,现在就去做。Afterhehadleftschool,hejoinedthearmy.离开学校之后,他参了军。Imustgettotheshopbeforeit’sclosed.我必须在商店关门之前赶到那里。Whatareyougoingtodoafteryoufinishcollege?学院毕业之后你打算干什么?27(2.2)sinceIhaveworkedheresinceIgraduatedfromtheuniversitythirtyyearsago.自从三十年前大学毕业以来,我就在这儿工作。HehasbeenillsincehewenttoEnglandlastmonth.自从上个月到英格兰后,他就病了。since表示自过去到目前为止的一段时间。主句一般用现在完成时,从句用一般过去时。28Trueorfalse?HowlonghaveyoubecomeaPLAman?HowlonghaveyoubeenaPLAman?IhavecomeheresincelastJuly.IhavebeenheresincelastJuly.IthasbeenoveroneyearsinceIcameherelastJuly.▲since+从句或名词,表示‘一段时间’,所以主句中现在完成时的动词要从延续动词。___________________29Itis…since…It’smanyyearssinceWorldWarⅡwasover.自从二次大战(结束)以来,已经很多年了。HowlongisitsinceyouwereaPLAman?=HowlonghaveyoubeenaPLAman?你参加人民解放军多久了?▲Itis+一段时间+since+句子自从…以来,有多长时间了。30(2.3)until/till;not…untilWewalkedandwalkeduntil/tillitwasdark.我们一直走到天黑。Wedidn’tbegintowalkuntilitwasdark.直到天黑了,我们才开始走。walk延续动词用until/till表示‘直到’。begin瞬间动词用not…until表示‘直到’。31until/till;not…untilLiMingwillwaituntil/tillhisfathercomesback.李明要一直等到他父亲回来。LiMingwon’tleavehereuntilhis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