英语人教版八年级下册Present Perfect Tense.ppt

,马鞍山市信息化作品大赛,新人教版英语八年级下册第八单元语法课,王成,马鞍山市和县濮集初级中学,PresentPerfectTense,PresentPerfectTense,新人教版英语八年级下册第八单元语法课,IstillhaventfoundwhatImlookingfor,PresentPerfectTense,新人教版英语八年级下册第八单元语法课,Ihaveclimbedhighestmountain.,Ihaverunthroughthefields.,haveclimbed,haverun,PresentPerfectTense,新人教版英语八年级下册第八单元语法课,基本结构,have/has+动词过去分词,助动词,否定式,havent/hasnt,一般疑问式,Haveyou/they.?Hasshe/he?,规则,不规则,1.talk-talked,2.like-liked,3.study-studied,4.stop-stopped,1.AAA:cut-cut-cut,2.AAB:beat-beat-beaten,3.ABA:run-ran-run,4.ABB:sit-sat-sat,5.ABC:give-gave-given,类型：原形-过去式-过去分词,PresentPerfectTense,新人教版英语八年级下册第八单元语法课,即学现用,1.Theyhavecomeback.（变为否定句）,Haveyouhadacomputer?,Yes,Ihave.,/No,Ihavent.,3.Hehaslivedherefor30years.（对划线部分提问）,Howlonghashelivedhere?,2.Ihavehadacomputer.(变为一般疑问句并作肯定和否定回答）,Theyhaventcomeback.,e4.play5.put6.plan7.lose8.cry9.swim10.go,did,done,worked,worked,came,come,put,put,lost,lost,swum,swam,played,played,planned,planned,cried,cried,went,gone,.句型转换,.写出下列动词的过去式和过去分词,PresentPerfectTense,新人教版英语八年级下册第八单元语法课,基本用法,1.过去发生的某一动作对现在造成的影响或结果，或到现在为止已经发生或完成的动作，用以下四大标志词可以表达这种含义。,*以already,just和yet为标志,Hehasalreadygotherhelp.他已得到她的帮助。,Ihavejustreadthebook.我刚刚看过这本书。,Theyhaventcomebackyet.他们还没有回来。,*以ever和never为标志,ThisisthebestfilmIhaveeverseen.这是我曾经看过最好的一部电影。,Wehaveneverheardthenews.我们从没有听过这个消息。,*以动作发生的次数为标志,*以sofar为标志,Peterhaswrittensixpaperssofar.到目前为止，彼得写了六篇论文。,HehasbeentotheUSAthreetimes.他已经去过美国三次了。,PresentPerfectTense,新人教版英语八年级下册第八单元语法课,基本用法,2.表示过去发生的、持续到现在的动作或状态。,Hehasworkedforussinceheleftschool.他离开学校以后就一直为我们工作。,Hehasbeenbusysincelastweek.自上个星期以来他一直很忙。,Shehaskeptthetableforthreeweeks.她已经借了这张桌子三个星期了。,+从句,for,+时点,since,+时段,/时段ago,SheandIhavebeenfriendssincewewereveryyoung.,HehaslivedinNanjingsince5yearsago.,Theyhavestayedherefortwoweeks.,PresentPerfectTense,新人教版英语八年级下册第八单元语法课,A.afterB.whenC.sinceD.before,【2011安徽】39.Hepromisedtopickmeupattheschoolgate.However.he_yet.A.didntarriveB.doesntarriveC.isntarrivingD.hasntarrived,【2015安徽】53.IcansayIhaveseenabigdifferenceinthisschool_shecame.,【2014安徽】34.RickhaslearnedalotaboutChineseculture_hecametoChina.A.beforeB.whenC.untilD.since,A.pickedupB.givenupC.lookedforD.wai