时间状语从句语法课

语法课学习目标1、学习时间状语从句的结构及用法。2、通过观察、比较，分析when和while引导的时间状语从句的区别。1.Afterparkingtheirbicycles,theywalkingtoTian’anmenSquare.2.Astheywereexploringhappily,moreandmorepeoplecametothesquare.3.Whileyouwereenjoyingyourtrip,Iwasbusypreparingformyexams.4.I’dlikeyoutomeethimwithmewhenhearrives.5.Hedidn’traisehisheaduntilsomeonecalledhim.6.Assoonasthethreeboyssaweachother,theyalljumpedaroundhappily.7.WouldyouhelpmemakeaplantoexploreBeijingbeforehecomes?自主学习一Pleasereadthesentencesasquicklyaspossible.引导时间状语从句连词有：when(当……的时候)while（在……期间）as（当……，一边……一边……）before(在……之前)after(在……之后)until(直到……为止)assoonas（一……就……）时间状语从句自主学习二Lookatthepicturesandmakesentenceswith“while”.MariawasswimmingwhileJanewasrunning.MichaelwassingingwhileSallywasdancing.DarrenwashavingaclasswhileMichaelwasclimbingamountain.haveaclass/climbrun/swimdance/singPleasetranslatethemintoEnglish.当我爸爸在看报纸时，我正在看电视。他们在谈话时，我们在玩游戏。Whilemyfatherwasreadingthenewspaper,IwaswatchingTV.Whiletheyweretalking,weareplayingcomputergames.自主学习三：Lookatthepicturesandmakesentenceswith“when”.write/knockatKangkangwaswatchingTVwhenthetelephonerang.KangkangandJanewerewritingwhenMichaelknockedatthedoor.DarrenwasreadingwhenMichaelcamein.read/comeinwatch/ringPleasetranslatethemintoEnglish.她走进我房间时，我正在看书。你打电话来的时候我出去了。老师进来的时候你在写信。Whenshecameintomyroom,Iwasjustreadingabook.Iwasoutwhenyoucalledme.Youwerewritingaletterwhentheteachercamein.DarrenwashavingaclasswhileMichaelwasclimbingamountain.Whiletheyweretalking,thebellrang.MichaelwassingingwhileSallywasdancing.观察一：while引导的从句与when引导的从句有什么不同？总结一：while引导的从句通常表示两个动作同时进行，一般用进行时，而when引导的从句用过去时。DarrenwasreadingwhenMichaelcamein.KangkangwaswatchingTVwhenthetelephonerang.KangkangandJanewerewritingwhenMichaelknockedatthedoor.DarrenwashavingaclasswhileMichaelwasclimbingamountain.Whiletheyweretalking,thebellrang.MichaelwassingingwhileSallywasdancing.DarrenwasreadingwhenMichaelcamein.KangkangwaswatchingTVwhenthetelephonerang.KangkangandJanewerewritingwhenMichaelknockedatthedoor.观察二：时间状语从句中主句和从句的时态有什么规律吗？总结二：时间状语从句中主句和从句的时态要保持一致，或是现在时或是过去时。DarrenwashavingaclasswhileMichaelwasclimbingamountain.Whiletheyweretalking,thebellrang.MichaelwassingingwhileSallywasdancing.DarrenwasreadingwhenMichaelcamein.KangkangwaswatchingTVwhenthetelephonerang.KangkangandJanewerewritingwhenMichaelknockedatthedoor.观察三：请仔细观察下面的动词，能发现什么吗？总结三：have,climb,talk,sing,dance,read,watch,write是。ring，come是。延续性性动词非延续性动词延续性动词：study,work,stand,know,walk,keep,have,wait,watch,sing,read,sleep,live,stay非延续性动词：open,die,close,begin,finish,come,go,move,borrow,lend,buy,arrive课堂练习三：请说出下面词是延续性还是非延续性动词。study,open,finish,work,close,begin,stand,know,walk,come,keep,have,wait,go,watch,move,buy,sing,lend,arrive，read,die,borrow,sleep,live,stay总结四：1.When可指时间点，又可指时间段，从句中可用延续性动词，也可用非延续性动词。2.While总是指一个时间段，从句中必须用延续性动词。3.统一时态：主句过去式，从句也是过去式。引导时间状语从句连词有：when(当……的时候)while（在……期间）as（当……，一边……一边……）before(在……之前)after(在……之后)until(直到……为止)assoonas（一……就……）拓展延伸课堂练习四:用“while”或“when”填空。1.Maywastalkingonthephone,hersisterwalkedin.2.Iwaswalkinginthestreettheaccidenthappened.3.IsawCarlos,hewassinginglouldly.4.Iwasdancing,hewassinginglouldly.5.theteacherwasspeakingtoclass,hestoodupsuddenly.6.Iwascleaningmyroomthetelephonerang.WhileWhileWhenWhenWhileWhen1.Don’tforgettoclosethewindow_______youleave.2.Helenwenttoflykites_______shefinishedherhomework.3.Jackdidn’tgotobed_________10:30lastnight.4.He’llsendmeamessage_____________hegetstoLondon.5._______Igottothestation,itbegantorainheavily.用when,before,after,until,assoonas填空，每词只用一次。beforeafteruntilassoonasWhen1.Whilemyfatherthenewspaper,IwaswatchingTV.2.Whilethey（talk）,thebellrang.3.Youcan’tdoyourhomeworkwhileyou（watch）TV.4.Whenshe（come）intomyroom,Iwasjustreadingabook.5.Iwasoutwhenyou（call）me.6.Youwerewritingwhenthetelephone(ring).用括号中单词的适当形式填空。calledcamearewatchingwasreadingweretalkingrangKangkang,MichaelandDarrenrodetoTian’anmenSquaretogether._______theyparkedtheirbikes,theywalkedtoTian’anmenSquare._______theywereenjoyingexploring,thecrowdofpeoplebecamelargerandlarger.__________thecrowdwaspushingDarreninalldirections,someonesteppedonhisfeet._______Darrenfinallypushedhiswayout,hecouldn’tfindhistwofriends.Hewasfrightenedandsatdownonastep.Hedidn’traisehishead_______Kangkangcalledhisname.__________theysaweachother,theyalljumpedaroundhappily.Fillintheblankswiththeconjunctionsintheboxbasedon1a.afterasuntilwhenwhileassoonasAfterAsWhile/WhenWhenuntilAssoonas