英语人教版八年级下册unit5 Grammar Focus -4c.ppt

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1、Unit5Whatwereyoudoingwhentherainstormcame?Grammarfocus-4c砚山县民族中学陈辉秀Learninggoals1.复习并巩固过去进行时态构成及运用2.体会while和when在引导时间状语从句时用法上的区别3.能讲述过去发生的事教学难点：when和while的用法和区别用所给单词的适当形式填空1.—What___you____(do)whenhearrived?—I___________(watch)TVatthattime.2.Bob_________(shop)whenI____(go)tothe

2、park.3.Isawsomekids_______(play)footballoverthere.4.She________(read)bookswhilehermother________(cook)yesterdayafternoon.5.It'sraining________(heavy)outside.weredoingwaswatching精彩回顾wasshoppingwentplayingwasreadingwascookingheavily1.take2.play3.clean4.shop5.sleep6.buy7.leave8.tu

3、rn9.kidv.开玩笑10.hittakingplayingcleaningshoppingsleepingbuyingleavingturningkiddinghittingtookplayedcleanedshoppedsleptboughtleftturnedkiddedhit预习热身写出现在分词形式写出过去分词形式思考:以下句子用了_______时态过去进行时①HewaswatchingTVfrom8:00to9:00lastnight.②TheywerehavinganEnglishclassatthistimeyesterday.③Th

4、estudentswerestudyingcarefullywhentheteachercameintotheclassroom.④Shewasn'tdoingherhomeworkat7:00lastnight.⑤--Washeplayingbasketballthen?--Yes,hewas./No,hewasn't.⑥WhatwereyoudoingwhenIcalledyoulastnight.观察及探究合作完成学案上探究（一）1.过去进行时表示在过去某一时刻或某一段时间段正在进行的____或存在的_____。经常和表示______(现在/过

5、去）的时间状语连用，如：atthistimeyesterday，whenIcalledhim,from8:00to9:00lastnight,at7:00lastnight等。2.结构：主语+_____/_____+动词_____+时间状语3.把肯定句变为否定句时，将was改为_____,将were改为________;一般疑问句是将____或______提到句子前。合作探究一动作状态过去waswere-ingwasn'tweren'twaswerewhen和while都可表示“当……的时候”，在过去进行时中引导时间状语从句。阅读下列句子，思考Whe

6、n和While的用法，完成合作探究（二）①IwaswalkingtoschoolwhenIsawacatinatree.②WhenSallyarrivedhome,hermotherwascleaningthehouse.主句的动作是持续性的，而从句动作是短暂性的，此时用______引导时间状语从句，主句用__________时态，从句用一般过去时态。过去进行when合作探究（二）③WhileIwassleepinginthebedroom,someoneknockedatthedoor.④Davidfellwhilehewasridinghisbi

7、ke.主句的动作是短暂性的，从句的动作是持续性的，此时用_______引导从句，主句用__________时态，从句用过去进行时态。一般过去while⑤WhileAndywaswaitingforthebus,hewasreadinganewspaper.⑥HewascleaninghiscarwhileIwascooking.主句和从句的动作在过去的某时刻或某段时间同时发生，而且动作都是持续性的，此时用_________引导从句，而且主句和从句都用____________时态。过去进行while1.Tomwaseatingsupper,itbega

8、ntorainoutside.2.Whatwereyoudoing,Mr.Zhoucamein?3.Pete