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现在完成时：表示过去发生或已经完成的某一动作对现在造成的影响或结果，或从过去开始一直延续到现在的动作或保存的状态。结构：主语+have/has+动词的过去分词否定句：haven’t/hasn’t一般疑问句：Have/Has…?Yes,主语+have/has.No,主语+haven’t/hasn’t.常与下列时间状语连用：just,already,yet,ever,never,before,severaltimes表示从过去已经开始持续到现在的动作或状态，可以和表示“从过去某一时刻延续到现在的一段时间状语”连用，如“for+时间段”、“since+过去的时间点”、“since+从句(一般过去时态)”、“since+一段时间+ago”。且for与since引导的时间状语可以相互转换。e.g.Myunclehasworkedatthisfactoryfortenyears.=Myunclehasworkedatthisfactorysincetenyearago.I’velivedheresince1990．自从1990年以来我就住在这里。Ihaven’tseenhimforthreeyears.我三年没有看见他了。选用for和since填空:1.Wehaven’tseeneachother______alongtime.2.Hisfatherhasbeeninthefactory______10yearsago.3.Thefilmhasbeenon______20minutes.4.MrGreenhasworkedhere______hecametoChina.5.Hisgrandparentshavebeendead______severalyears.6.It’sfiveyears_______wemetlasttimeforsinceforsinceforsince此种用法中表示持续性的动作或状态的动词必须是延续性动词(否定句除外)。1.这本书我买了5年了。Ihaveboughtthebookforfiveyears.()Ihavehadthebookforfiveyears.()×√2.你哥哥参军多长时间了？Howlonghasyourbrotherjoinedthearmy?()Howlonghasyourbrotherbeeninthearmy/beenasoldier?()×√1.转换为相应的延续性动词，用于现在完成时。borrow—keepbuy—haveputon—wearcatchacold—haveacoldgettoknow—knowgettosleep—sleep2.转化为“be+形容词/副词/介词/名词”begin/start—beongoout—beoutclose—beclosedopen—beopengetto/arrive/reach—be(in)die—bedeadleave—beawayfinish—beoverfallsleep—beasleepjoin—bein/beamemberofbecome—bemakefriends—befriendscome/go/—be+相应的介词短语•现在完成时：表示过去发生或已经完成的某一动作对现在造成的影响或结果，或从过去开始一直延续到现在的动作或保存的状态，强调的是现在的情况，不能和表示过去的时间状语连用（如：in1990，lastSunday等）。•一般过去时：一般过去时只表示过去的动作或状态，和现在不发生关系（即动作或状态在现在已经结束），它可以和表示过去的时间状语连用。现在完成时与一般过去时的区别：在学习这一概念的同时，应注意常与现在完成时连用的几个副词：already,just,ever,yet,never等。already,just多用于肯定句中，ever,yet,never多用于疑问句和否定句中。如：Ihavealreadyfinishedmyhomework．我已经做完家庭作业了。Hehasjusthadhismeal．他刚吃过饭。HaveyoueversungthisEnglishsong？你曾唱过这首英文歌吗？Theyhaven‘tstartedyet.他们还没有身。Wehaveneverheardofit．我们从来没有听说过这件事。动词填空：1._____you________(clean)theroom?Yes,we__________(do)thatalready.When_______you______(do)it?We_______(do)itanhourago.2.______he______(see)thisfilmyet?Yes.When_____he_____(see)it?He______itlastweek.3.Howmanytimes_____you______(come)here?Once.HavecleanedhavedonediddodidHasseendidseesawhavecome4.I__________(read)thenoveltwice.It’sinteresting.5.She___________(go)toPairs,hasn’tshe?Yes.How______she_______(go)there?She_______(go)therebyair.6.Sofar,manycountries______________(develop)theirsoftwareprograms.7.MrChen______(give)upsmokinglastyear.8.______youever_______(ride)ahorse?Never.9.He________(keep)thebooksincetwodaysago.havereadhasgonedidgowenthavedevelopedgaveHaveriddenhaskept(1).have(has)beenin意为“已经在某地呆了多长时间”，常与表示一段时间的状语连用。Mr.BrownhasbeeninShanghaiforthreedays.布朗先生来上海已经有三天了。TheyhavebeeninCanadaforfiveyears.他们到加拿大有五年了。havebeenin,havebeento与havegoneto的用法(2).have(has)beento意为“曾经去过某地”,表示现在已经不在那里了.可与just,ever,never等连用。如：I’vejustbeentothepostoffice.我刚才去邮局了。HaveyoueverbeentoHangzhou?你曾经去过杭州吗？MaryhasneverbeentotheGreatWall.玛丽从未去过长城。have(has)beento后面可接次数,表示去过某地几次。如：I'vebeentoBeijingthreetimes.我去过北京三次。(3).have(has)goneto意为“到某地去了”，表示到了某地或正在去某地的途中。总之，说话时该人不在现场，一般不用第一、二人称代词作主语。如:—WhereisTom?汤姆在哪里？—Hehasgonetothebookshop.他到书店去了。Howlonghaveyouhadthatbikeoverthere?I'vehaditforthreeyears.Howlonghashissonownedthetrainandrailwayset?He’sowneditsincehisfourthbirthday.Haveyoueverplayedfootball?Yes,IdidwhenIwaslittle,butIhaven'tplayedforawhilenow.GrammarFocus4aRewritethesentencesusingfororsince.1.JimisinJapan.Hearrivedtherethreedaysago.2.Theyareveryhungry.Theirlastmealwastenhoursago.Theyhavebeenhungryfortenhours/sincetenhoursago.JimhasbeeninJapanforthreeyears.3.Ihaveacamera.Iboughtitin2009.4.IknowAnna.Ifirstmetherthreeyearsago.5.Lindaisill.ShebecameillonMonday.Ihavehadacamerasince2009.IhaveknownAnnforthreeyears/sincethreeyearsago.LindahasbeenillsinceMonday.1.I______________(neverbe)tothewaterparkbefore.Iwantto____(go)nextmonthbeforetheweathergetstoocold.2.They_______________(neverown)anypets,butthey____________(alwayswant)tohaveadog.3.We__________(have)apianosincelastNovember.We_________(buy)itfromtheLifamilywhentheymovedtotheUSlastyear.Fillintheblankswiththecorrectformsoftheverbsinbrackets.haveneverbeengohaveneverownedalwayswanthavehadbought4b4.CathyandAmy_____________(notbe)backtotheirhometownfortwoyears.They______(miss)theirhometownalotandhopetovisittheplacenextyear.5.Thismuseum__________(be)hereforover20years.It_____(be)oneoftheoldestbuildingsinthissmalltown.haven’tbeenmisshasbeenis4cFillinthequestionsandasktwostudents.Thencompletethechart.1.Doyouhavea(n)_______?Howlonghaveyouhadit?2.Doyouowna(n)_______?Howlonghaveyouownedit?ThingsHowlongTonyfavoritebookbasketballfortwoyearssincehewas10yearsoldstudent1Student2