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时间:2020-02-26
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1、现在完成时练习语法1、结构:have(has)+动词的过去分词否定句:主语+haven’t(hasn’t)+动词的过去分词一般疑问句:have(has)+主语+动词的过去分词2、动词的过去分词:规则变化(和过去时一样)不规则变化(见书本不规则动词表)3、用法:1)表过去发生的某一动作对现在造成的影响或结果。Eg:Ihavejustcleanedmyclothes.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)通常与already,just,ever,yet,never,b
2、efore等时间副词连用。2)表示过去已经开始,持续到现在的动作或状态,也可能继续下去的动作或状态。*for+一段时间(延续性动词)eg:ShehaslearnedEnglishfor3years.(但非延续性动词的否定形式也可以)eg:Theyhaven’tseeneachotherfor10years.*since+过去时间点(过去时动词)注意不能和一段时间连用Eg:Theyhavelivedheresince3yearsago.(Theyhavelivedheresince2005.)Since+句子(一般过去时)Eg:Wehavebeengoodfriendssinc
3、eshemovedtoNantong.一、、用所给词的适当形式填空。1、It__________(rain)forthreedays.2、Idon’tknowthisoldman.I__________(meet,never)her.3、let’sgotothecinema.No,I_________(see,already)thefilm.4、We__________(finish,not)ourhomeworkyet.5、Mum_____________(come,not)yet.Shewillbebackinaminute.6、I_____________(know)L
4、ilyfortwoyears.7、Haveyou__________(write)threelettersthismoring?8、ZhangHong__________(make)manyfriendssinceshecametoLondon.9、__________they__________(visit)theGreatWall?Notyet.10、Willtheconcertfinishsoon?No,it________just__________(start).二、句型转换1、Theyhavealreadygonetoschool.(改为一般疑问句及否定回答)__
5、________they__________toschool_________?No,they___________.2、Myfatherhasreadtenbooksaboutcomputers.(划线提问)_____________________________________yourfather___________aboutcomputers?3、MissGreenhastaughtEnglishforafewyears.(同上)___________________________MissGreentaughtEnglish?4、Hisfamilyhaveowne
6、dthislandsincefiveyearsago.(同上)______________________ownedthisland___________fiveyears?5、Myunclelefthishometownthreemonthsago.(用for短语替换)Myuncle_______________________________________hishometown__________threemonths.6、TherearemanychangesinNangtong.(改为现在完成时)___________________________________
7、________________inNangtong.7、Tomhastofinishthetaskwithinthreehours.(改为一般疑问句)_______________________________________________________withinthreehours?8、HehasneverbeentoBeijingbefore.(改为反义疑问句)HehasneverbeentoBeijingbefore,_________________________?三、改错1、Iha
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