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1、Unit8Haveyoureadtreasureislandyet?DoyouoftenreadEnglishbooks?Whatclassicbookshaveyoualreadyread?What’sitabout?Andwhat’sitlike?Haveyouheardofthesebooks?---HaveyoureadAliceinWonderlandyet?---Yes,Ihave.---No,Ihaven’t.---Whatdoyouthinkofit?---Ithinkitis…---HaveyoureadRobinsonCruso
2、eyet?---Yes,Ihave.---No,Ihaven’t.---Whatdoyouthinkofit?---HaveyoureadLittleWomenyet?---Yes,Ihave.---No,Ihaven’t.---Whatdoyouthinkofit?---HaveyoureadOliverTwistyet?---Yes,Ihave.---No,Ihaven’t.---Whatdoyouthinkofit?---HaveyoureadTomSawyeryet?---Yes,Ihave.---No,Ihaven’t.---Whatdo
3、youthinkofit?Readthefollowingsentencesandtrytotranslatethem.HaveyoureadLittleWomenyet?Yes,Ihave./No,Ihaven't.HasTinareadTreasureIslandyet?Yes,shehas.Shethinksit’sfantastic.Haveyoudecidedwhichbooktowriteaboutyet?Yes,Ihave.I’vealreadyfinishedreadingit.Itwasreallygood.用法1.表示过去发生或
4、已经完成的某一动作对现在造成的影响或结果。e.g.–Haveyouhadyourlunchyet?–Yes,Ihave.I’vejusthadit.(现在我不饿了。)2.表示动作或状态从过去某一时刻开始,一直延续到现在,而且可能还要继续下去。现在完成时e.g.Ihaven’tseenherthesedays.I’veknownBobforthreeyears.I’vebeenatthisschoolforovertwoyears.时间状语already,yet,just,ever,never,before构成现在完成时是由“助动词have/has+
5、动词的过去分词”构成的,规则动词的过去分词构成与过去式相同,不规则动词的过去分词则需逐个记忆。句式1.肯定句:主语+have/has+过去分词(+其他):Tomhassleptfor3hours.2.否定句:主语+have/has+not+过去分词(+其他):Wehaven'tfinishedyet.3.一般疑问句:have/has+主语+过去分词(+其他):Haveyoueverbeenhere?现在还在睡,还没起来。4.特殊疑问句:特殊疑问词+have/has+主语+过去分词(+其他)Howlonghaveyoubeeninthisschool
6、?(到目前为止)你在这所学校多久了?already和yet都可以作为现在完成时的标志词,但它们的用法不同。◆already一般用于肯定句中。如:Wehavealreadycleanedupourclassroom.注意:already用于疑问句中时通常表示惊奇。如:Haveyoufinishedyourhomeworkalready?Ican’tbelieveit.你都已经做完作业了吗?◆yet一般用于疑问句和否定句中。如:Haveyouseenheryet?Thebushasn’tcomeyet.你已经看见她了吗?公交车还没来吗?—WhyisMr
7、.Yangstillintheteachers’office?—Maybehe________hisworkyet.A.doesn’tfinishB.hasn’tfinishedC.haven’tfinishedB用适当的时态填空,并思考为什么要用这个时态:1.She’s_________(live)hereeversinceshewasten.2.Bothofthem____________(be)inHongkongfortendays.3.Halfanhour_____________(pass)sincethetrainleft.4.___
8、____you________(find)yourwatchyet?5.---Areyouthirsty?---No,I_