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Hehasnotcompletedthework.Hasthepostmancomeyetthismorning?Ihaveknownhimforalongtime.1.PoliceinAmericahavesteppeduptheirsearchforafifteen-year-oldboy.2.Theincidenthasreceivedgreatinterestduetoreports.3.Whilewehavenotdismissedtheidea,wearelookingintootherpossibilityaswell.thePresentPerfectTenseForm:have/has+doneNegativeform:have/hasnotdoneQuestionform:Have/Has+主语+donehasalreadyopenedLook,thewindowisopen.Ericopenedthedoorjustnow.Eric_____________(alreadyopen)thewindow.过去的动作:Ericopenedthewindow.也与现在相关:Thewindowisopen.)我们用现在完成时谈论发生在过去，但是对现在仍有影响的事.Summary(1):1.Shehascleanedtheroom.1.Shecleanedtheroom.(房子现在是干净的)(房子现在是否干净不知道)现在完成时PK一般过去时：1.现在完成时:强调动作对现在产生了结果和影响.现在完成时PK一般过去时：2.一般过去时:只表示过去的动作和状态.强调动作.若有时间状语：yesterday,lastweek，…ago,in1980,inOctober,justnow,用一般过去时1.Tom_____(write)alettertohismotherlastnight.2.Iboughtanewhouse,butI___myoldoneyet,soatthemomentIhavetwohouses.A.didn’tsellB.haven’tsold3.I______(study)inZhentoumiddleschoolforthreeyears,butnowI’mstudyinghere.wroteBstudied—Where_____therecorder?Ican’tseeitanywhere.—I____itrighthere.Butnowit’sgone.A.didyouput;haveputB.haveyouput;putC.hadyouput;wasputtingD.wereyouputting;put第一个空“放”这个动作强调对现在的影响，“我找不到”第二个空“放”指过去的一个动作B我们用现在完成时谈论开始于过去，并且还持续到现在的事。Summary(2):IhavenotseenJustinsincelastFridaynight.Bethisn’there.She_________(go)toBeijing.hasgoneExercise—Thewindowisdirty.—Iknow.It________forweeks.A.hasn’tcleanedB.didn’tcleanC.wasn’tcleanedD.hasn’tbeencleanedD高考链接Thepolice____________________(justfinish)searchingthearea.havejustfinished我们用现在完成时谈论刚刚完成的动作。Summary(3):“I____________(justarrive)bytrain.”shesaid.havejustarrived1.Youdon'tneedtodescribeher.I___herseveraltimes.A.hadmetB.havemetC.metD.meet我们用现在完成时表示反复发生的动作。Summary(4):I______________(read)yourarticlethreetimes.It’swellwritten.havereadHaveyouwatchedanygoodshowslately/recently?GreatchangeshavetakenplaceinChinainthepastfiftyyears.Wehavelearned1000wordsbynow/uptonow/sofar.Readthefollowingsentences:当某个行为发生的确切时间不很清楚或不重要.出现下面的这些时间表达方式我们用现在完成时:Summary(5):already,ever,for,just,lately,never,recently,since,yet,sofar，by的短语,inthepast/last+段时间Theboyhasalreadycomehere.Ihaven’theardanythingfromhimyet.Notes1:我们肯定句中用already，否定句或疑问句中用yet.用never,ever,already,yet,填空1.Ihave_______seenhimbefore,soIhavenoideaabouthim.2.Jackhas_________finishedhishomeworksinceanhourago.3.Mr.Wanghasn’tdismissedtheidea____.4.“Haveyou________seenthefilm?”“No,Ihave________seenit.”5.“Hasthebusleft_______?”“Yes,ithas_________left.”neveralreadyyeteverneveryetalreadyNotes2:for+段时间since+点时间Wehaven’tseenhimfortwoyears.Wehaven’tseenhimsince2002.1)since+过去一个时间点(如具体的年、月、日期、钟点、1980,lastmonth,halfpastsix)。Ihavebeenheresince1989.2)since+一段时间+agoIhavebeenheresincefivemonthsago.3)since+从句Greatchangeshavetakenplacesinceyouleft.4)Itis/hasbeen+一段时间+since从句Itis/hasbeentenyearssinceIbecameastudent.Exercises:sinceorfor1.HehaslivedinNanjing________theyearbeforelast.2.I’veknownhim________wewerechildren.3.OurteacherhasstudiedJapanese_________threeyears.4.Shehasbeenawayfromthecity_________abouttenyears.5.It’sabouttenyears________sheleftthecity.sincesinceforforsinceHissisterlefthomein1998,and____since.A.hadnotbeenheardofB.hasnotbeenheardofC.hasnotheardofD.hadnotheardofB-_____you____himaroundthemuseumyet?-Yes.Wehadagreattimethere.A.Have;shownB.Do;showC.Had;shownD.Did;showAIwonderwhyhe_____tomerecently.Shepromisedtowritetomeeveryweek.A.hasn’twrittenB.doesn’twriteC.didn’twriteD.won’twriteATranslate:Mygrandfatherhasdiedforthreeyears.我的爷爷死了三年了。×Mygrandfatherhasdiedforthreeyears.Mygrandfatherhasbeendeadforthreeyears.Mygrandfatherdiedthreeyearsago.Itis/hasbeenthreeyearssincemygrandfatherdied.×eg:come,go,leave,arrive,buy,borrow,join,lose,die,marry,begin,start,finish…Notes3:非延续性动词(瞬间动词)在完成时态中其肯定式不能与表示一段时间的时间状语连用.come/arrivego/leavediegetmarriedjoinborrowbegin/startfinishbuybeherebeawaybedeadbemarriedbe…keepbeonbeoverhave非延续动词延续动词老约翰已经去世五年多了。A.OldJohnhasdiedformorethanfiveyears.B.OldJohnhaspassedawayformorethanfiveyears.C.OldJohnhasbeendeadformorethanfiveyears.电影已经开始25分钟了。A.Themoviehasstartedfor25minutes.B.Themoviehasbeenonfor25minutes.C.Themoviehasbegunfor25minutes.我的弟兄参军已有5年了。A.ItisfiveyearssincemybrotherjoinedtheArmy.B.Mybrotherhasbecomeasoldierforfiveyears.C.MybrotherhasjoinedtheArmyforfiveyears.她嫁给麦克已经6年了。A.ShehasmarriedMikefor6years.B.ShehasgotmarriedtoMikefor6years.C.ShehasbeenmarriedtoMikefor6years.张先生去外地已有三个月了。A.MrZhanghasbeenawayfor3months.B.MrZhanghasleftfor3months.C.MrZhanghasgoneawayfor3months.短暂性动词转换为延续性动词1)HegottoBeijingfiveminutesago.He______________________Beijingfor________________.2)Iwenthomeyesterday.I______________________homefor_________________.3)Ibecameateacherin2000.I_________________ateacherfor_______________.hasbeeninfiveminuteshavebeenatonedayhavebeentenyears4)Mygrandpadiedin2002.Mygrandpa______________________for_______________.5)Themeetingfinishedsixhoursago.Themeeting____________________forsixhours.6)Theymarriedin1990.They__________________________since_________.hasbeendeadeightyearshasbeenoverhavebeenmarried1990•7)Theyborroweditlastweek.•They_____________itsince___