英语人教版八年级下册unit5 SectionA Grammar-4c.ppt

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1、Unit5Whatwereyoudoingwhentherainstormcame?SectionA(Grammar-4c)湖北省十堰市东风七中谢晋Makesentencesonebyonewithwhen/while.(句子接龙)WarmingupMakeconversationsinpairswiththePastProgressiveTenseCheckhomeworkon-lineSheweredoinghouseworkwhenIwasdoingmyhomework.Whatwereyou

2、doingatthistimeyesterday?Iwasdoingmyhomework.Whatwereyourmotherdoingwhileyouweredoingyourhomework?12345Watchavideo：Whathappened?Adisaster(灾难)tookplaceinAmerica.Thereweretornados(龙卷风)coming.Luckily,itwasOKinChina.Whatwerethefamouspersonsdoingatthattime?Gu

3、essingHewasexercising.WhatwasLuHandoingatthetimeofthetornado?WhatwasshedoingwhileLuHanwasexercising?Shewasdrinkingwater.Shewasreadinginthelibrary.Whatwasshedoingwhenthetornadocame?Hewasrunning.WhatwasYaoMingdoingwhenthedisastercame?Whatweretheydoingatthet

4、imeofthetornado?Theywerecookingathome.12345探究一ReviewthePastprogressivetense过去进行时过去某时刻或某时段正在发生的动作at8yesterday,atthattime,from6to9p.m.,when/while时间状语从句am/is/are1.含义：过去进行时表示。2.时间状语：。3.基本结构：现在进行时：+动词-ing过去进行时：+动词-ingwas/were4.句型1)肯定句:主语++动词-ing形式He(watch)TVat

5、ninelastnight.Myparents(cook)atthattime.2)否定句:主语+++动词-ing形式I(notplay)basketballwhenitbegantorain.was/werewaswatchingwerecookingwas/werenotwasn’tplaying3)一般疑问句:+主语+动词-ing形式+…？肯定回答:Yes,主语+.否定回答:No,主语+.you(have)supperatthetimeoftherainstorm?No,I.4)特殊疑问句：疑问词+

6、+主语+动词-ing形式？Whatthetwins(do)then?Was/Werewas/werewasn’t/weren’tWerehavingwasn’twas/wereweredoingchant过去进行最好记，was/were后加doing；动作发生在过去，时间状语别忘记；肯定主语位句首，一般问句提前be;否定句式更简单，be后仅把not添。2345观察以下两组短语并得出结论waitforthebus，playthepiano，cleantheroom,goshoppingcomein,arri

7、vehere,leavethehouse,turnontheradio第一组为（能/不能）持续发生的动作，叫延续性动作。第二组为（能/不能）持续发生的动作，叫非延续性动作，也叫瞬间动作。探究二观察并探讨when/while的用法.能不能观察以下四组句子并得出结论1.1).WhenIfirstmetJimtwoyearsago,hewasworkinginthesupermarket.2).Wewerehavingdinnerwhenthephonerang.3).Weweretalkingwhenthet

8、eachercamein.4).Whentheteachercamein,weweretalking.主句为延续性动作，从句中的动作时态为，只能由引导。从句若在主句之前，用逗号隔开。瞬间when一般过去时2.1).Iwasdoingmyhomeworkwhilemyparentswerecooking.2).Weweresingingwhiletheyweredancing.3).Whiletheyweredancing,we