现在完成时现在完成时(presentperfecttense)通常
表
关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf
示过去发生的动作一直延续到现在,而且还可能继续下去,或者表示过去的行为对现在造成一定的影响,可能还会产生结果等。1.现在完成时结构1.1.助动词have/has动词过去分词。其中,助动词要随着主语的变化而变化,当主语是第三人称单数时,助动词要用“has”。例:Haveyoufinishedyourwork?HesaysthathehasseenUFOsmanytimes.1.2.现在完成时的缩写形式:Ihave=I’ve havenot=haven’thasnot=hasn’t例:I’vefinishedmywork./Hehasn’tfinishedhiswork.1.3.现在完成时的一般疑问句:Have/Has主语动词的过去分词其他?肯定回答:Yes,主语have/has.否定回答:No,主语haven’t/hasn’t.例:----Haveyoufinishedyourwork?----Yes,Ihave./No,lhaven’t.----Havetheyarrived?----Yes,theyhave./No,theyhaven’t.1.4.1.通过加-ed的形式来构成
规则
编码规则下载淘宝规则下载天猫规则下载麻将竞赛规则pdf麻将竞赛规则pdf
动词的过去分词,就像我们构成这些动词的过去式方法一样。大多数动词后ed.如finish---finished.以字母e为结尾的动词后d,如change---changed.以辅音字母加y结尾的动词,去掉y,再加ied.如carry---carried.以一个元音再加一个辅音结尾的短动词,双写辅音辅音字母再加ed.如stop---stopped1.4.2.构成不规则动词的过去分词的方法有所不同,需要特别记忆。如:come---come; hurt---hurt. lend---lent; build---builtcatch---caught; keep---kept forget---forgotten tell---toldbe---been; have---had fall---fallen; fly---flowndraw---drawn; see---seen;think---thought.2.现在完成时的用法2.1.表示过去发生或已经完成的动作,对现在造成的影响或结果。通常与表示时间的词汇连用,常见的有“already,yet,ever,just,recently,since,for.lately”Justinhasdisappearedforthreedays,soKellyisverysad.Ihavejustfinishedmyhomework.2.2.表示过去已经开始持续到现在,也许还会持续下去的动作或状态。可以和表示从过去某一时刻延续到现在(包括现在)的一段状语连用,如“for,since,sofar,now,today,thisweek,thismonth”。如:ShehaslivedinBeijingsinceshemovedinChina.Ihaveknownherforalongtime.2.3.一般现在时可用于重复的行为中,表示到现在为止这一段时间内,多次动作总和或所做过的工作量的积累。如:IhavebeentoShanghaitwice.Ihavemoppedthefloorthreetimestoday.3.注意现在完成时和一般过去时的区别。现在完成时表示到说话时为止已经发生或完成的动作或状态,强调造成的结果或对现在的影响;而一般过去时侧重于陈述过去发生的事情或状态,与现在没关系。例:HehasjustbeentoBritishandsawtheBigBenthere. 经常与一般过去时连用的表示时间的词语有“yesterday,theotherday,last…,ago…”;与现在完成时常用的表示时间的词语有“already,ever,just,recently(not)yet,since等。”例:HewenttoBeijingtwoyearsago.(一般过去时)HehasalreadylivedinBeijingfortwoyears.(现在进行时)练习:用现在完成时和一般过去时完成下列句子1.We____(go)totheparklastmonth.2.___youever___(try)thefamousBeijingDuck?3.IamhappythatI___(learn)toswim.4.I___(visit)theGreatWallwithmyparentstheotherday.4.现在完成时中have/hasbeen和have/hasgone的用法。have/hasbeento用来表达某人去了一个地方并且已经回来了,指的是一次经历;have/hasgone用来表达某人去了一个地方,但是还没回来。例:MillieandAmyhavebeentotheSouthHillandtheywanttogothereagain.(米莉和艾米去过南山,而且她们还想再去那里)MillieandAmyhavegonetotheSouthHillandtheywillcomebacktomorrow.(米莉和艾米去了南山,她们将明天回来。)练习:用have/hasbeen或have/hasgone填空。1.Sandyisn’there,she___tothelibrary.2.I___just___tothelibraryandborrowedsomeinterestingbooks.3.Mycousin___toXi’antwice.4.Mycousin___toXi’anandhewillstaythereforaweek. 5.与for和since连用的动词现在完成时常与for或since等引导的表示一段时间的状连用.如fortenminutes,since1985等.“for时间段”强调这一段时间的长度。“since时间点(或一个从句)”强调这一段时间的起点。(1).在现在完成时的肯定句中,和for与since连用的谓语动词要用延续性动词,如work,be,study,liveHehasstudiedEnglishsincetwoyearsago. (2).某些非延续性动词的否定形式可以与for或since等时间状语连用。Haven’tseenyouforalongtime.(3)一些延续性动词和非延续性动词的转换begin/starthave/hasbeenonThefilmhasbeenonfor20minutes.finish/stophave/hasbeenoverTheparadehasbeenoverforhours.come/go/arrivehave/hasbeenin/atKittyhasbeeninHongKongfortwodays.leavehave/hasbeenawayShehasbeenawayfromHongKongsincelastTuesday.borrowHave/haskeptShehaskeptthebooksincelastweek.joinhave/hasbeeninhave/hasbeenamemberofSimonhasbeenamemberoftheFootballClubsincelastyear.marryhave/hasbeenmarriedTheyhavebeenmarriedfor15years.diehave/hasbeendeadThefishhavebeendeadforsometime.buyhave/hashadIhavehadthiswatchfortendays.catchacoldhave/hashadacoldTommyhashadacoldsincelastweek.fallillhave/hasbeenillShehasbeenillforthreeyears.现在完成时综合练习1.()----Haveyoueatenmyfood,Andy?----No,I___.A.have B.haven’t C.has D.has’t2.()Ourcountry___ alotsince1978.Now,it’smuchstronger.A.ischanged B.changed C.haschanged D.changes3.()I ___ herformanyyears,soIcan’trememberhername.A.haven’tseen B.haveseenC.didn’tsee D.see4.()Simonhas___fedthedog,buthehasn’twateredtheplants.A.still,already B.yet,already C.yet,still D.already,yet5.()----Whydoesn’tTonycome?----Theinvitationletter___toTobybyaccident.A.wasemailed B.hasemailed C.isemailed D.emailed6.()----Mom,IwanttowatchTheLegendofMiyueonchannal8tonight.----Oh,dear,it___forafewminutes.Comeon!A.hasbegun B.willbegin C.hasbeenon D.willbeon7.()----Peter,youspeakChinesesowell.----Thankyou.I___ChinesesinceIcameherein2013.A.willlearn B.learned C.havelearned D.learn8.()----Whatanicewatch!Howlong___you___it?----Forjusttwoweeks.A.will,buy B.have,had C.were,having D.did,buy9.()----WillyouwatchtheprogrammeRunningManinZhejiangSatellite-TVtonight.----Yes,ofcourse.It__oneofthemostpopularshowssincelastOctober.A.was B.became C.hasbeen D.hasbecome10.()----Whatagedidyouleavehome?----Ilefthomeat18,Neil.I___yourcityforfiveyears.A.havegoneto B.havebeento C.havebeenin D.havecometo11.()Mikeusedtobeatopstudent,buthe_____behindsincehelosthimselfincomputergames.A.fell B.hasfallen C.was D.hasbeen12.()-----______you_____JeremyShu-HowLin?-----Yes.Theoncenamelessyoungmanbecameabasketballherosuddenly.A.Did,hear B.Do,listento C.Have,heardof D.Have,listento