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1、Unit6Topic2HowaboutexploringtheMingTombs?Unit6Topic2SectionA时间状语从句：引导词有when,while,as,before,after,until/till,assoonas…等当…的时候when:强调atthattime;引导的从句可用瞬间动词/延续动词(相当于while);与主句所表达的动作有先后,也有同时.while:强调duringthattime,用于同时发生的两个延续性动作或两类动作对比。一般主从句都用进行时。as:1）强调atthesametime动作同时
2、发生，2）可译为“一边…，一边…”（同一个主语）注:主从句同时进行，从句又是延续性时（进行时），三者都可以用。“当…的时候”eg.Hesawanoldfriendwhen/while/ashewasrunning.1.MysisterwassingingwhenIcameintoherroom.2.ItbegantorainwhenIgothome.3.Hewillgoonatripwhenhehastime.5.MymomiscookingwhilemyfatheriswatchingTV.9.Shedrankwaterass
3、hewatchedTV.(同一个主语）6.Thebellrangwhile(when)thestudentsweretalking.4.Theaccidenthappenedwhen(while)theywerewalking.10.Shedancedasshesang.11.As(while/when)hewaslisteningtothesong,hethoughtofhisoldfriends.7.HeisgoodatmathwhileIdowellinEnglish.8.Sheusedtoliveinthecountry
4、while(when)shewasagirl.Sumup1)…when/while/as+V延2)…when+V短3)V延（进行）+while+V延（进行）4)一边…一边…(相同主语）：asbefore:在…之前after:在…之后1.Beforeyougoonatrip,youshouldworkoutthecost.=Beforegoingonatrip,youshouldworkoutthecost.2.Hewasheshishandsafterheplaysbasketball.=Hewasheshishandsafte
5、rplayingbasketball.until/till(主句短暂性动作)not…until直到…才…（主句延续性动作）…until直到…为止1.Hedidn’tgotobeduntil12o’clocklastnight.2.Iwon’tgobackhomeuntilIfinishmyhomework.3.Theboywaiteduntilhisparentscameback.4.Thestoreisopenuntil11o’clock.assoonas…一…就…Assoonasheheardthebadnews,helef
6、twithoutsayingaword.当主句用一般将来时时，由assoonas…引导的时间状语从句应当用一般现在时。I’llcallyouupassoonasIreachthere.相似情况的还有if(如果)引导的条件状语从句。Wewon’tgoonatripifitrainstomorrow.Hewilltellusifhefindsouttheinformation.when,while,as,assoonas,until,after,before1.I’lltellhimaboutit_______________hec
7、omesback.2.Motherwasdoingsomecleaning______fatherwaswatchingthefootballmatch.3.Shedanced_____shesang.4.Hewaitedforme______12:00lastnight.5.Hecouldn’thelpcrying________________heheardthebadnews.6.______Isaid“Goodbye”tomyparents,Ilefthomeforschool.7.Hedidn’ttellmeanyth
8、ing___________hesawme.assoonas/whenwhileasuntilwhen/assoonas/afterAfterbefore/until1.当我年轻时，我在乡下工作。2我做作业时，我的父亲在看杂志。3离开房间之前，请关灯。4直到有人
