外研版初中英语七年级下册课件：Module9 Unit3 Language in use.ppt

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1、外研七年级下册Module9Unit3Languageinuse语法讲解建议采用归纳法，如尽可能多的呈现一些相关例句，或可让学生从已学课文中找相应例句，引导学生试着从所观察到的语言现象中总结出语法规律。TolearnthepasttenseofirregularverbsObjective：【本单元例句】Heleftschoolandbeganworkattheageof12.ButhetookthenameMarkTwainandbecameveryfamousinthe1860s.Hewrote38plays.In159

2、9thecompanybuilttheGlobeTheatre.经过前面的学习，我们知道大多数动词的过去式的变化规律为：“动词原型+ed”但是在英语中不符合上述变化规律的动词也很多，它们有其特殊的变化形式。这种动词称为不规则动词。这种动词的变化没有规律，而要靠同学们单独记忆。下面将常见的不规则动词的过去式总结如下：要牢记喔!一般过去式(III)Grammar1.不变：cost-cost;hurt-hurt;put-putlet-let;read-read2.只变一个元音字母：come-came;become-became;b

3、egin-begandrink-drank;give-gave;ring-rangsing-sang;swim-swam;sit-sat;win-wonthrow-threw;know-knew;draw-drewdrive-drove;ride-rode;write-wroteget-got;forget-forgot;run-ran;fall-fell3．只变一个辅音字母：build-built;has/have-hadlend-lent;lose-lostmake-made;send-sentspend-spent增加

4、一个辅音字母：hear-heard;burn-burnt;learn-learnt;mean-meant4．改变两个元音字母：break-broke;speak-spoke;choose-chose;feed-fed;meet-met;feel-felt;sweep-swept;wear-wore;lie-lay;say-said;see-saw5．过去式含有ought/aught：buy-bought;bring-broughtfight-fought;think-thoughtcatch-caught;teach-tau

5、ght6．情态动词：can-could;shall-should;will-would;may-might7．原形中有-ell:sell-sold;tell-told;smell-smelt8．其他:be-was/were;do-did;find-foundfly-flew;go-went;leave-leftstand-stood;understand-understood下面是一些常见的不规则动词的过去式。be—was/wereleave—leftbuy—boughtmeet—metcome—cameread—readd

6、o——didsee—sawget——gotspend—spenthave—hadswim—swamwrite—wrotetake—took肯定式一般疑问句构成主语+V过去式Did+主语+V原形例句IvisitedBeijinglastsummer.DidyouvisitBeijinglastsummer?行为动词的一般过去时的一般疑问句是借助于did来完成的，其回答也是如此。例如：—Didyouwatchtelevisionlastnight?你昨晚看电视了吗？—Yes,Idid.是的，我看了。No,Ididn’t.不，我没

7、看。行为动词的一般过去时变一般疑问句时，有三个要点：一、句首加did，动词还原。二、将句中的第一人称变为第二人称。三、some变any；already变yet。巧记动词过去时态动词一般过去时,表示过去发生的事;be用was或用were,have,has变had;谓语动词过去式，过去时间坐标志;一般动词加-ed，若是特殊得硬记。否定句很简单，主语之后didn’t添;疑问句也不难，did放在主语前;如果谓语之前有did,谓语动词需还原;动词若是was,were,否定就把not添。【总结】WearrivedinShanghaila

8、stmonth.Accordingtotheexample,rewritethesentences.Wedidn’tarriveinShanghailastmonth.DidyouarriveinShanghailastmonth?Yes,wedid./No,wedidn’t.Hedidn