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ID:36846594
大小:1.00 MB
页数:78页
时间:2019-05-10
《《初中英语语法动词》PPT课件》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、ReviewOfTenses动词的构成be动词助动词情态动词系动词实义动词be动词be动词的几种形式amisarewaswerebeingbeenbe动词的用法与名词、数词、形容词、介词连用Iamadoctor.Heisten.Theyaretired.Thecatisunderthetable.be动词的用法Therebe句型用于不可数名词和可数名词单数之前Thereisapenonthedesk.Thereissomewaterintheglass.用于复数名词之前Therearesomesheepinthehill.用于一般将来时Th
2、ereisgoingtobeafilminourschoolnextSunday.用于一般过去时Therewasabookonthedeskyesterday.Thereusedtobe(过去常)atalltreehere.be动词的用法Be动词在时态中的运用在现在进行时中Wearetalking(交谈)now.在过去进行时中Weweretalking(交谈)atthistimeyesterday.助动词助动词的几种形式do/don’tdoes/doesn’tdid/didn’twill/won’thave,haven’t/has,hasn
3、’t/hadhadn’t助动词的用法对句子进行否定和疑问Doyougetupearlyeveryday?Ididn’t(没)havelunchyesterday.Willyoubebacksoon?Hehasn’t(没)finishedtheworkyet.在反意疑问句中Heworksinaschool,doesn’the?Shehasneverbeenthere,hasshe?在倒装句中Theyhelpedthefarmers,sodidwe.Iwon’tvisitthefamoussinger,neitherwillhe.情态动词共同特
4、点情态动词后面跟动词原型无论否定、疑问、倒装句、或反意疑问句都用情态动词只有时态变化,没有人称变化情态动词解释can/could在表示请求允许的时候两者和互换,could比can语气更委婉。CanIhelpyou?Couldyouopenthewindow?在表示有能力作某事时,could是can的过去式。Icanswim.Icouldswimattheageoffive.情态动词Must/havetoMust表示主观意愿,否定句用Mustn’t,否定回答用needn’tImustgonow.Youmustn’tplayinthestree
5、t.MustIcleantheroomnow?No,youneedn’t.haveto表示客观条件的限制的“不得不”,它有时态和人称变化,需要助动词来否定和疑问。Idon’thavetocarrythebigbox.Hehadtowashhisclothes.情态动词解释May表示请求别人允许。MayIuseyourbike?表示可能性。Hemaybeateacher.Hemayliveinthisbuilding.系动词我们所学过的系动词是变成类get,turn,become,make感观动词look,sound,smell,taste,
6、feel似乎类seemappear保持类staykeep系动词只和形容词连用,构成系表结构Ifeelhungry.Thedaygetslongerandlonger.Helookedhappy.实义动词实义动词指的是有具体行为意思的动词。实义动词在句中可以做谓语动词和非谓语动词。做谓语动词的用法动词会有四种形式:单三,现在分词,过去式,过去分词实义动词注意:掌握四种形式的变化规律Heworksintheoffice.Wearedancingtogether.Icaughtacoldlastweek.Shehaswateredtheflowe
7、r.实义动词做非谓语动词的用法(指出现在谓语动词之后的动词,它受前面谓语动词的限制)动词会有三种形式:原型(do)动名词(doing)不定式(todo)实义动词用原型:letsb.domakesb.dohelpsb.(to)dohadbetterdo实义动词用动名词:likedoingenjoydoingfinishdoing介词之后用动名词begoodatdoingwhataboutdoingthankyoufordoing实义动词用不定式:wanttododecidetodoplantodowouldliketodolearntodot
8、ellsb.(not)todoasksb.(not)todo实义动词注意下列词不同形式的不同用法:rememberdoing/todoforgetdoing/todostopdo
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