八下第五单元第三课时.ppt

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1、Whatwereyoudoingwhentherainstormcame?Unit5SectionA3Grammarfocus-4c1.感觉像2.首先3.入睡4.逐渐变弱5.确信6.醒来7.一团糟8.清洁feellikeatfirstfallasleepdiedownmakesurewakeupinamesscleanupRevisionA:Whatwereyoudoingateightlastnight?B:Iwastakingashower.A:Whatwasshedoingatthetimeo

2、ftherainstorm?B:Shewasdoingherhomework.GrammarFocus读下列句子,你能总结出句子中的时态吗？1.定义：2.构成：3.标志词：表示在过去某一时刻或一段时间正在进行的动作。主语+was/were+doing否定式：主语+was/werenot+doing疑问式：Was/Were+主语……doing?atthistimeyesterdayatthattimeat9:00lastnightwhenwhile过去进行时一.用所给动词的适当形式填空。1What__

3、__you____(do)atnoonyesterday?2)I____________(watch)TVwhenmymother_____(come)in.3)He________(do)hislessonsattenyesterdaymorning.4)Thechildren__________(play)footballatfouryesterdayafternoon.5)Thebaby__________(sleep)whenthemothercameback.weredoingwaswat

4、chingcamewasdoingwereplayingwassleepingwhen和while都可表示“当……的时候”，引导时间状语从句。你知道两者在过去进行时中的用法有什么不同吗？请仔细观察下面的例句，说出你的发现。过去进行时中的when和whileA:Whatwashedoingwhentherainstormcame?B:Hewasreadinginthelibrarywhentherainstormcame.A:WhatwasBendoingwhenitbegantorainheavil

5、y?B:Whenitbegantorain,Benwashelpinghismommakedinner.A:WhatwasJennydoingwhileLindawassleeping?B:WhileLindawassleeping,JennywashelpingMarywithherhomework.英语中，动词按其动作发生过程的长短，可分为延续性动词和非延续性动词。延续性动词指动作可以延续一段时间,而不是瞬间结束。如:work、study、drink、eat等。非延续性动词指动作极为短暂，瞬间结

6、束。如:start、begin、leave、buy、turnon等。when跟非延续性动词，常用一般过去时。while跟延续性动词，常用过去进行时。when可以替换while,延续非延续都跟。while表两动同发生，前后过去进行时。when和while之歌1._______Jenniferwasreadingamagazine,hissisterwaslisteningtothepopmusic.A.WhileB.WhenC.Whattime2.Iwastryingtodrawacatonthebo

7、ard_________theteachercamein.A.whileB.whenC.whattime3.MybestfriendvisitedmyhousewhileI_______dinnerinthekitchen.A.cookedB.cookingC.wascooking二．单项选择。ABC4.—Dickgavemeanote while I______inthelibrary. —Iguesshemadeittosay“sorry”toyou.(2007黄冈市) A.amreadin

8、gB.wasreadingC.reads  D.willreadBLookatthetableandwritesentenceswithbothwhileandwhen.活学活用4a1.WhileJohnwastakingphotos,Maryboughtadrink.JohnwastakingphotoswhenMaryboughtadrink.2.WhileJohnwasplayingthepiano,Maryleftthehouse.Johnwasplaying