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1、Unit4Earthquakes教学目标:语法——现在完成时重难点突破:1.现在完成时的构成:主语+have(has)+过去分词(done)2.用法:(1)现在完成时用来表示现在之前已发生过或完成的动作或状态,但其结果却和现在有联系,也就是说,动作或状态发生在过去但它的影响现在还存在.常与for,since连用. Ihavelostmywallet.(含义是:现在我没有钱花了.) Janehaslaidthetable.(含义是:简已在吃饭.) Michaelhasbeenill.(含义是:现在仍然很虚弱)Hehasreturned
2、fromabroad.(含义是:现在已在此地) Maryhasbeenillforthreedays. Ihavelivedheresince1998.(2)现在完成时往往同表示不确定的过去时间状语连用,如already,yet,just,before,recently,still,lately等: Hehasalreadyobtainedascholarship. Ihaven'tseenmuchofhimrecently(lately). Wehaveseenthatfilmbefore. Havetheyfoundthe
3、missingchildyet?(3)现在完成时常常与表示频度的时间状语连用,如often,sometimes,ever,never,twice,onseveraloccasions等: HaveyoueverbeentoBeijing IhaveneverheardBunnysayanythingagainsther. Ihaveusedthispenonlythreetimes.Itisstillgood. Georgehasmetthatgentlemanonseveraloccasions.还可以同包括现在时间在内的时间状
4、语连用,如now,uptothesefewdays/weeks/months/years,thismorning/week/month/year,now,just,today,uptopresent,sofar等: Peterhaswrittensixpaperssofar. Manhasnowlearnedtoreleaseenergyfromthenucleusoftheatom. TherehasbeetoomuchraininSanFranciscothisyear. Uptothepresenteverythinghas
5、beensuccessful.(4)现在完成时与for引起的短语连用时,表达从过去开始的动作或状态延续至今,而一般过去时与“for+一段时间”连用时,只指过去的动作或状态在过去延续了多长时间。We'vestayedhereforthreeweeks.我们在这里呆了三个星期了。(说话时人还在)。Hestayedhereforthreeweekslastyear.他过去曾在这里呆过三个星期。(并不表示现在是否在)(5)have gone to和have been to的区别:前者表示某人“去某地了”,这个人已经不在这里了,常用于第三人称。后者
6、表示某人“去过某地,现在已经回来了”,常与ever等连用可用于各人称:She has gone to England. 她到英国去了。She has been to England.她去过英国。“Where is Tom?”“He has gone to the post office.”(Tom目前不在说话处)Have you ever been there? 你曾经去过那里吗?(说话人you目前在说话处)强化训练:1.Mother____meanewcoatyesterday.I_______iton.Itfitsmewell.A.h
7、admade;havetriedB.made;havetriedC.hasmade;triedD.made;tried2._____youever_____America?Yes,Ihave.A.Have;gonetoB.Have;goneinC.Have;beentoD.Have;beenin3.Tom_____upintothetree.Look,he____highupthere!A.hasgotisB.hasclimbedwasC.gotwasD.climbedis4.____you_____thetextyet?Yes,we__
8、__ittwohoursago.A.DidcopydidB.HavecopiedhaveC.HavecopieddidD.Didcopyhad5.Why______she_______angr