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ID:55658318
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时间:2020-05-23
《现在完成时和一般现在时的区别.ppt》由会员上传分享,免费在线阅读,更多相关内容在PPT专区-天天文库。
1、Agoodbookisagoodfriend.April23rdHaveyoureadbookstoday?Unit8HaveyoureadTreasureIslandyet?Period2:SectionA4a-4cHaveyoureadRobinsonCrusoeyet?Yes,Ihave.No,Ihaven’t.A:Whatbookshaveyoualreadyread?B:I’vealreadyreadDreamoftheRedChamberandJourneytotheWest.A:Whatdoyouthinkofthem?B:Well,IthinkDreamoftheRedCha
2、mberwasboring,butJourneytotheWestwasabitexciting.ExplanationAlready和yetAlready若用在疑问句中,常表示吃惊意外的语气。此时Already常放在句末或句中。Haveyoufinishedyourhomework________?你的作业完成了吗?(我以为你没有做完,表示出乎意料。)HaveatryalreadyA:Whatmovieshaveyoualreadyseen?B:I’vealreadyseenShaoLinTemple.A:Whatdoyouthinkofit?B:Well,Ithinkit’swonderf
3、ul.A:Whatsongshaveyoualreadyheard?B:I’vealreadyheardSuperStar.A:Whatdoyouthinkofit?B:Well,Ithinkit’sbeautiful.Let'sdoasurvey.4cCompletethechartwithinformationaboutyouandafriend.YouYourfriendCommentsBooksIhavealreadyreadMoviesIhavealreadyseenSongsIhavealreadyheardReportI’vealreadyreadthebook.Ithinkit
4、’s.Myfriendhasreadabookcalled.HeShethinksit’s.现在完成时(一)1、构成:助动词have(has)+过去分词(have/hasdonesth)其否定句在Have/has后加not.一般疑问句把have/has提到主语前.GrammarIhave=I’veshehas=she’shavenot=haven’thasnot=hasn’t句型转换1.Ihavefinishedmyhomework.①I____________myhomework.(改为否定句)②—______you______yourhomework?(改为一般疑问句并作肯定回答)—Ye
5、s,____________.答案:1.①haven’tfinished②Have;finished;Ihave2.Hisdreamhascometrue.(改为一般疑问句并作否定回答)---______hisdream______true?---No,____________.答案:2.Has;come;ithasn’t规则变化:过去式和过去分词的变化相同一般在动词词尾直接加ed。以不发音的e结尾的动词后面加d。以“辅音字母+y”结尾的动词,变y为i,再加-ed。词尾只有一个辅音字母的重读闭音节动词,要双写辅音字母,再加-ed。不规则变化:5.以不变应万变。如:let→let→let;put
6、→put→put;read→read→read6.若中间有双写e,则去掉一个e,单词末尾再加t。如:feel→felt→felt;keep→kept→kept;sleep→slept→slept7.结尾的字母d变t。如:lend→lent→lent;build→built→built;send→sent→sent8.变为以-ought或-aught结尾。如:buy→bought→bought;bring→brought→brought;catch→caught→caught;teach→taught→taught2、表过去发生的某一动作对现在造成的影响或结果。例如:Ihavejustclean
7、edmyclothes.我刚洗过衣服。(“洗衣服”是发生在过去的动作,对现在造成的结果是“衣服干净了”)Ihavejusthadmybreakfast.(对现在的影响:不饿)--HaveyoureadLittleWomenyet?--No,Ihaven’t.(我对该书不了解)3、通常与表示包括现在在内的时间副词just(刚刚),already(已经),before,yet(一般疑问:已经;否定句:
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