英语人教版八年级下册Unit5 Grammar Focus.ppt

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1、Unit5湖北十堰郧阳区青曲中学杨霞GrammarFocus—4cSectionA【学习目标】知识技能目标掌握并灵活运用本课的重点词汇icykid重点短语wakeup,havealook,inbadshape,thenightbefore,重点语法：过去进行时的用法；when与while引导的时间状语从句学会讲故事Tellastory；学会谈论难以忘记的事情Talkaboutpastevents情感态度目标在困难时期应该互相帮助Whatwereyoudoingat9o’clocklastni

2、ght?Iwasdoingsomehousework.Iwashavingdinner.Askandanswer.Whatwereyoudoingbetween7o’clockand9o’clockyesterday?Iwasdoingmyhomework.IwaswatchingTV.Whatwasyourfatherdoingwhenyoucamebackhomeyesterday?Hewascooking.Whatwasyourbrotherdoingwhenyousawhimhalfanhou

3、rago?Hewasplayingcomputergames.WhatwasTomdoingatthattimelastSunday?Hewasplayingthepiano.Hewasridingabike.HowaboutDavid?Whatweretheydoingatthattimelastweek?Theywereshopping.Howaboutthem?Theywerehavingapicnic.【课堂探究】请读并观察GrammarFocus中的句Whatdidyoufind?（你发现了

4、什么？）________________________Bothofthemmean“当……的时候”.Aretheythesame?No！！！whenandwhile【继续探究】Whatarethedifferences?区别whenwhen引导的时间状语从句可以表示一个时间点,也可以表示一个时间段。从句中可以用短暂性动词，也可以用延续性动词。Itwassnowingwhenwegottotheairport.我们到达机场时，天正下着雪。MykeydroppedonthegroundwhenIwasw

5、alkinginthepark.我在公园散步时，钥匙掉在了地上。while引导的时间状语从句常指一个时间段,从句中的动词常为延续性的。while有时还可表示主句的动作与从句的动作同时发生。Whilehewasreading,thephonerang.他正在看书时，电话铃响了。Somestudentswerereadingwhileotherswerewriting.一些学生在读书，另一些学生在写字。while1)若从句是一个短暂性动作，主句是一个持续性动作，可用when但不用while：Itwasra

6、ininghardwhenwearrived.我们到达时正下着大雨。2)表示主、从句正在进行的动作或状态的对比时多用while：Whileshewasmakingaphonecall,Iwaswritingaletter.when和while的区别3)when可用作并列连词，表示“这时(突然)”，但while不可以；while可以用作并列连词，表示“而、却”(表示对比)，但when没有这种用法。Wewereaboutto(打算)startwhenitbegantorain.Helikescoffee,

7、whileshelikestea.1.Iwassleeping______mycousincametoseeme.2.Mymotherwasdoingthehousework______Iwasdoingmyhomework.3.______thealienwasintheshop,thegirlcalledthepolice.whenwhileWhile知识点拨WhatdoyouknowaboutPastprogressiveTense(过去进行时)?你对过去进行时知多少？1.定义：2.结构：3.标

8、志词：4.句型:5.过去进行时与一般过去时的区别:4aLookatthetableandwritesentenceswithbothwhileandwhen.WhileJohnwastakingphotos,Maryboughtadrink.JohnwastakingphotoswhenMaryboughtadrink.WhileJohnwasplayingthepiano,Maryleftthehouse./Johnwasplayingthepiano