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现在完成时1.现在完成时的构成：现在完成时由助动词have\has+过去分词构成，第三人称单数用has，其余用have。IhavebeeninShenzhenforsevenyears.Lilyhasn’tbeentoAmericabefore.2.现在完成时的用法：1）现在完成时通常表示在说话之前已经完成的动作或存在的状态。说话人强调的是该动作或状态对现在的结果或影响。Mydaughterhasjustgoneout.我女儿刚出去。I’msurewe’vemetbefore.我肯定我们以前见过面。Shehasarrived.她到了。2）表示持续到现在的动作或状态,for…,since…,yet等。如：Ihaven’theardfromherthesedays.这些日子我没有收到她的信。Wehaven’tseenyourecently.最近我们没有见到你。Theyhavebeenawayfortwoyears.他们离开已经两年了。ShehasbeenwithussinceMonday.3.常和现在完成时连用的时间状语：already,yet,before,lately,recently,once,twice,ever,never，since，for等连用。例如：Shehasalreadycome.她已经来了。Ihaven’treadityet.我还没读过这个。TheyhaveneverbeentoYan’an.他们从未去过延安。Ihaven'tseenhimlately.我近来没看到他。Shehasbeenanindependentgirlsinceherfatherpassedaway.自从父亲去世后，这女孩就变得独立了。Jackhasbeenadoctorfor10years.杰克做医生已经10年了。4.现在完成时的否定式和疑问句。否定句：在have\has后加not结构：主语+has\have+not+过去分词+其他一般疑问句：Has\Have提到主语前，其他照写。结构：Have\Has+主语+过去分词+其他特殊疑问句：特殊疑问词+一般疑问句注意：肯定句中如有some\and，在否定句或者一般疑问句中要变成any\or，即some-anyand-or以study为例，其否定式、疑问式和简单回答形式如下：肯定句否定句疑问句回答IhavestudiedGermanbefore.Ihavenot(haven’t)studiedGermanbefore.HaveyoustudiedGermanbefore?Yes,Ihave.\No,Ihaven’t\havenot.HehasstudiedGermanbefore.Hehasnot\hasn’tstudiedGermanbefore.HashestudiedGermanbefore?Yes,hehas.\No,hehasn’t\havenot.5.部分不规则变化动词表BaseFormPastFormPastParticiplebearborebornbeatbeatbeatenbecomebecamebecomeblowblewblownbringbroughtbroughtbuildbuiltbuiltbuyboughtboughtcatchcaughtcaughtchoosechosechosencomecamecomedodiddonedrinkdrankdrunkdrivedrovedriveneatateeatenfallfellfallenfindfoundfoundflyflewflowngetgotgotgivegavegivengowentgonegrowgrewgrownhavehadhadhearheardheardkeepkeptkeptleaveleftleftloselostlostmakemademadeputputputreadreadreadrunranrunsaysaidsaidseesawseensellsoldsoldsendsentsentsingsangsungsinksank/sunksunktaketooktakenteachtaughttaughtwritewrotewroteam,iswasbeenarewerebeen6.注意：1.since和for的区别since后接过去的某个时间点，如1993，lastterm,yesterday,thetimeIgottherefor后接一段时间，表示“长达多久”，如tenyears,awhile,twodays等。Exercise:用since和for填空1.JimhasbeeninIreland______Monday.2.JillhasbeeninIreland______threedays.3.HisaunthaslivedinAustralia______15days.4.Maryisinheroffice.Shehasbeenthere______7o'clock.5.Indiahasbeenanindependentcountry______1974.6.Thebusislate.They'vebeenwaiting______20minutes.7.Nobodylivesinthosehouses.Theyhavebeenempty______manyyears.8.Mikehasbeenill______alongtime.Hehasbeeninhospital______October.2.表示短暂意义的动词如arrive,leave,borrow,buy,begin,start,die等，在完成时当中不能和表示一段时间的状语连用，因为它们表示的动作不可能持续。因此，不能说：Hehascomeherefor2weeks.×Theoldmanhasdiedfor4months.×Theyhaveleftonlyfor5minutes.×以上三句话可以改为：Hehasbeenherefor2weeks.Theoldmanhas_____________for4months.Theyhave__________onlyfor5minutes3.have(has)been（to\in）+地点和have(has)gone(to)+地点的区别：“曾到过某地”=“have(has)been”;去过，现在已经回来了。“已经去某地”=“have(has)gone”。去了没有回来。试比较：Wherehashebeen?他刚才到哪里去了？（已经回来了）Wherehashegone?他上哪儿去了？（人不在）TheyhavebeentoCanada.他们到过加拿大。（现在已经不在加拿大）TheyhavegonetoCanada.他们到加拿大去了。（可能在路上和已经到加拿大）随堂练习：一、用单词的适当形式填空1.She’s_____________(live)hereeversinceshewasten.2.Bothofthem________________(be)inHongkongfortendays.3.Bothofthem____________(come)toHongkongtendaysago.4.Halfanhour__________(pass)sincethetrain__________(leave).5.Mary________(lose)herpen.________you_______(see)ithereandthere?6._________you_____(find)yourwatchyet?7.---Areyouthirsty?---NoI_________just_________(have)someorange.8.Wealready_________(return)thebook.9.________they_______(build)anewschoolinthevillage?10.I_____________(notfinish)myhomework.Canyouhelpme?11.Myfather(read)thenoveltwice.12.I_________(buy)abookjustnow.13.I_________(lost)mywatchyesterday.二、单选题1.Howlonghaveyou_______here?A.comeB.gotC.arrivedD.been2.Mygrandpadied_________.A.attheageofmy2B.for2yearsC.whenIwas2.D.myagewas6.3.Janehas_____toBeiJing.Shewillcomebacktomorrow.A.beenB.goneC.wentD.neverbeen4.Itistenyears_____Ilastsawher.A.afterB.sinceC.forD.that5.--WhowillgotothestationtomeetLorry?--Iwill.I_____herseveraltimes.A.metB.havemetC.hadmetD.willmeet6.--Whatanicedress!Howlong_____you_____it?--Just2weeks.A.will,buyB.did,buyC.are,havingD.have,had7.--DoyouknowLydiaverywell?--Yes,SheandI_____friendssincewewereveryyoung.A.havemadeB.havebecomeC.havebeenD.haveturned8.TheSmiths_______inChinafor8years.A.haslivedB.livedC.havebeenD.live9.--Hello,thisisMr.Greenspeaking.CanIspeaktoMr.Black?--Sorry.He______theBainiaoPark.A.hasbeentoB.hasgonetoC.wenttoD.willgoto10.--____youever____totheUS?--Yes,twice.A.Have,goneB.Have,beenC,Do,goD.were,going三、将下列句子变成否定句，一般疑问句，并对划线部分提问。1)Ihavebeentherefortwodays.否定句：一般疑问句：对划线部分提问：2)Myfatherhaslivedheresince2000.否定句：一般疑问句：对划线部分提问：3)Helefthereyesterday.否定句：一般疑问句：对划线部分提问：4)Theyboughtabooktwohoursago.否定句：一般疑问句：对划线部分提问：四、用“never,ever,already,just,yet,for,since”to填空1.Ihave_______seenhimbefore,soIhavenoideaabouthim.2.Jackhas_________finishedhishomework.3.Mr.Wanghastaughtinthisschool________tenyears.4.“Haveyou________seenthefilm?”“No,Ihave________seenit.”5.“Hasthebusleft_______?”“Yes,ithas_________left.”五、用have(has)been或have(has)gone填空。A:Where____________LiFei___________?B:He____________toHainanIsland.A:Howlong___________he___________there?B:He_____________ther