企业承包经营合同范本4篇

现在完成时现在完成时表示过去的动作或存在的状对现在造成的影响或结果，过去的这个动作或状态也有可能持续下去。•1.Ihavejustdonemyhomework.•2.Whohastakenmypen?•3.Hehaslivedheresince1992.•4.Thebushasjustleft.•5.Theyhaveseenthefilmalready.一．现在完成时的构成“主语+助动词have/has+动词过去分词”。当主语是第三人称单数形式时，要用助动词has,其他形式主语时用助动词have1.Ihavehadlunchalready.2.Shehasboughtsomebooks3.Thebuildinghasbeenbuiltforthreeyears三．现在完成时的用法：1.表示一个动作刚刚结束或完成，但这个动作所造成的状态或影响依然存在，即表示过去的动作对现在的影响或结果，强调现在的情况，常与副词just,already,yet连用。（注意：already多用于肯定句或疑问句中，yet常用于疑问句或否定句句尾。）•1.Wehavealreadyknowneachother.•2.Ihavejustwashedmyface.•3.Ihaven’treadyournovelyet.2.表示从过去到现在曾经发生过或经历过某事，表达一种经验或经历，常与副词ever,never,once,twice,before等连用•1.Haveyoueverseenhimbefore?•2.WehaveeverbeentoHainanmanytimes.•3.Ihaveneverseenyoubefore.3.常与for或since连用。For后接一段时间；since后接过去的点时间或表示过去时间的时间状语从句。1.Ithasn’trainedsincetwomonthsago.2.HehasbeeninBeijingforovertenyears.3.Howmanywordshaveyoulearnedsinceyoucamehere?Theyhavebeeninthiscountryformorethan3years.Theconcerthasbeenonforhalfanhour.Theyhavebeenoffforalongtime.四.使用现在完成时应注意的几点：•1.have(has)beento表示“曾经去过或到过某地”，表示一种经历，现在可能还在那里，也可能不在那里了。它可以与ever,never,once,twice等连用。•1.IhavebeentoAustraliathreetimes.•2.Hassheeverbeenthere?•2.have(has)goneto表示“某人去某地了”说明那个人不在说话处，其主语常用第三人称。•Ididn’tseeyourfather.Whereishe?•HehasgonetoAustralia.2.点（瞬间）动词或非延续性动词：•buy,borrow,leave,join,die,arrive,come,go,begin,start,get,become,lose等，它们不能和表示一段时间的时间状语连用。如：•for+一段时间，since引导的表示一段时间的时间状语用延续性动词或状态动词代替非续性动词。\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\•buy--have/borrow---keep/become—be/die—bedead/marry----bemarried/start(begin)---beon/end(finish)----beover/join------bein/•arrive(reach,getto,)---bein/leave---beoff（away）/•1.Ihavekeptthebookforamonth.•2.Shehashadthebikeforoverayear.(误)Hehasarrivedhereforthreedays.(正)Hehasbeenhereforthreedays.•使用“Itis/ithasbeen+时间+since+过去时态的句子”结构•或(时间＋have/has+passed+•since+过去时态的句子”结构•表示以since引导的时间状语从句中的动作自发生以来已经有一段时间了。It后面的be动词常用一般现在时，但有时也可以用一般将来时或一般现在时。1.Itisalongtimesincetheysaweachotherlast.2.Howlongisitsinceyoutookpartintheorganization?3.Ithasbeen3yearssinceIlivedhere.4.Itwillbe8yearsnextmonthsinceIbecameateacher.•3.与ever,never,just,always等表示不确定的时间副词连用时,可用现在完成时也可用一般过去时。Haveyoueverheardofsuchaman?（现在完成时。）Didyoueverhearofsuchaman?（一般过去时。）•4.终止动词的否定式可与for或since引导的表示一段时间的副词短语或状语从句连用。Ihaven'tseenherforfiveyears.现在完成时专练•()1.NeitheryounorLily___totheGreatWall.•A.havegoneB.haswentC.hasbeenD.havebeen•()2.Where___you_____yesterday?•A.have…beenB.have…goneC.did…goD.were…gone•()3.MrBlack____hereforthreeyearssincehecametoChina.•A.worksB.workedC.hasworkedD.hadworkedCCC•()4.____fortwomonths.•A.Themeetinghasbegun•B.Hisfatherhasboughtthecar•C.MybrotherhasbecomeadoctorD.Shehasworkedhere•()5.A:____Jim____toEngland?•B:Yes,he’llbebacknextweek.•A.Does,goB.Has,been•C.Has,goneD.did,goDC()6.A:Howlonghashebeenlikethis?B:_______.A.FortwodaysB.SincetwodaysC.TwodaysagoD.Fortwodaysago()7.A:“WhereisLucy?”B:“She____tothelibraryjustnow.”A.goesB.wentC.hasgoneD.isgoingAB•()8.A:Who’sdonebestinthehistoryexamthisweek?•B:Lily_____.•A.isB.doesC.wasD.has•()9.Ican’topenthedoorbecauseI____mykeys.•A.lostB.havelostC.willloseDB()10.Themeeting__forfiveminutes.A.hasbegunB.hadbegunC.hadbeenonD.hasbeenon•填空1.TheGreens__(be)heresincetwoyearago.2.Iwon’tgotoseethefilmtonight,becauseI______myticket.(lose)Dhavebeenhavelost•Theybegantocooktwominutesago.(同义句)•They__________fortwominutes•*Thebookshopclosedhalfanhourago.•Thebookshop__________________forhalfanhour.•5.They__________________(marry)for2years.havecookedhasbeenclosedhavebeenmarried现在完成时专练(二)()1Theman________in1992,he_________fortenyears.A.died,wasdeadB.died,hasbeendeadC.was,head,hasdiedD.wasdead,hasbeendied()2They_______inthisschoolsincethey_____tothiscityin2000.A.havestudied,havecomeB.havestudied,cameC.studied,cameD.werestudying,havecomeBB()3–HowlongcanI______thisbook?--Twoweeks.A.borrowB.keepC.lendD.return()4Ihave______amemberofGreenerChinasincethreeago.A.becomeB.becameC.beenD.joinedBC()5--Haveyoufinishedyourwork____?--Yes,Ihave______doneit.A.yet,yetB.already,alreadyC.already,justD.yet,just()6TheGreenshave________theirhometown_______1990.A.left,sinceB.left,forC.beenawayfrom,afterD.beenawayfrom,since.DD()7Wherehaveyou_______?Ididn’tseeyoujustnow.A.beenB.goneC.beentoD.goneto()8--Where’sBob?--He_____Pariswithhissister.He’llbebackintwoweeks.A.hasbeentoB.hasgonetoC.comesfromD.wenttoAB9Hebeganhisclasstenminutesago.=Hisclasshas_______fortenminutes.()10Howlonghaveyou_________thisbike?A.boughtB.hadC.borrowedD.got()11Liliehas____________Guangzhousincehewas14.A.cometoB.gonetoC.beentoD.beeninbeenonBD()12Theteacherisn’there.He_________totheoffice.A.wentB.willgoC.hasgoneD.isgoing.()13“_____you______thefilmyet?”“Yes,I_______itlastSaturday.”A.Will..see/sawB.Did…see/sawC.Have…seen/haveseenD.Have…seen/sawCD•()14我爸爸已经入党十几年了。•A.MyfatherhasjoinedthePartyfortenyears.•B.MyfatherhasbeenaPartymemberfortenyears.•C.MyfatherjoinedthePartyfortenyears.B