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1、現(xiàn)在完成時ThePresentperfectTense一、現(xiàn)在完成時：用來表示過去發(fā)生或已經(jīng)完成的動作對現(xiàn)在造成的影響或過去的動作從過去延續(xù)到現(xiàn)在。l????????現(xiàn)在完成時的句型結(jié)構(gòu)：have(has)+PP（過去分詞）。l????????規(guī)則動詞的過去分詞構(gòu)成與過去式相同，不規(guī)則動詞需要特殊記憶。Exercise1：寫出下列動詞的過去式、過去分詞。動詞的過去式、過去分詞的構(gòu)成：①__________________________________②__________________________________③______
2、____________________________④不規(guī)則動詞特殊記。finish_________________________play__________________________cry___________________________carry_________________________stop__________________________fly___________________________have_________________________Exercise2：1.I______Eng
3、lishinthisschoolsince1999.A.havetaughtB.haveC.teaD.wouldteach2.LiLei________thepenforfiveyears.A.hashadB.hasboughtC.havehadD.havebought3.Kate________hergrandmother’sphotobefore.A.haven’tseenB.haveseenC.seeD.hasn’tseen4.________Mary___________youthesedays?A.Has,seenB.Do,
4、seeC.Did,seeD.hasn’tseen5.Sofar,we__________thousandsofbuildinginBeijing.A.buildB.havebuiltC.builtD.willbuild二、現(xiàn)在完成時的含義之一表示過去發(fā)生或已經(jīng)完成的動作對現(xiàn)在造成的影響，常與never/ever,just,already/yet,before,sofar等連用。1.以already,just,yet為標(biāo)志：already,just,yet表示到現(xiàn)在為止動作或狀態(tài)已經(jīng)、剛剛或還沒發(fā)生。eg.⑴Hehasalreadyfi
5、nishedhishomework.⑵Hehasjustfinishedhishomework.⑶Hehasn’tfinishedhishomeworkyet.2.以ever/never為標(biāo)志：everever標(biāo)志到現(xiàn)在為止動作或狀態(tài)曾經(jīng)或從來沒有發(fā)生過。ThisisthebestfilmIhaveeverseen.HehasneverbeentoBeijing.3.以動作發(fā)生的次數(shù)為標(biāo)志：若某一動作到目前為止已經(jīng)發(fā)生若干次，則要用現(xiàn)在完成時態(tài)。HesayshehasbeentoShanghaithreetimes.4.以sofa
6、r為標(biāo)志：往往表示到目前為止動作或狀態(tài)已經(jīng)發(fā)生。Ihavepassedtheexamsofar.5.never/ever,just,already/yet,before,sofar的用法（略）Exercises21.---Haveyou________traveledonthetrain.---Yes,Ihave.A.neverB.everC.justD.yet2.---Haveyoufinishedyourhousework.---Not,____________.A.everB.alreadyC.yetD.just3.Wehave
7、n’theardhisvoice_____________.A.alreadyB.everC.yetD.just4.---Haveyou________learnedEnglish?---Yes,I’ve________learnedalot.A.never,everB.already,yetC.ever,alreadyD.already,ever5.---Haveyoufinishedyourwork__________?----Yes,I’vedonethat____________.A.yet,alreadyB.already,
8、yetC.ever,neverD.still,yet6.John’sfather_________borrowedsomepictures.A.havealreadyB.hasalreadyC.haveeverD.has
