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模块语法专练语法精讲现在完成时(三)1.现在完成时表示动作或状态从过去某一时刻开始一直持续到现在,常与“since+时间点”或“for+时间段”连用。for表示“经过(一段时间)”,而since表示“自从(……以来)”。例如:IhavelivedinHefeifortenyears.我在合肥已经住了10年了。Hehasbeeninthisschoolsince2010.自从2010年起,他就在这所学校了。MysisterhaslearntEnglishsinceshewasfour.我姐姐从4岁起就开始学英语了。2.在对现在完成时句子中的时间状语进行提问时,应用howlong。例如:—HowlonghasMarybeenateacher?玛丽成为老师已经多久了?—Sincetwoyearsago.自从两年前。语法精讲3.在现在完成时的肯定句中,非延续性动词一般不能与时间段连用。在表示持续一段时间的句中,应将非延续性动词转换为相同意义的延续性动词。常见的非延续性动词转换为延续性动词:非延续性动词延续性动词go,leave,movearrive,come,reachbuy,getfinish,endbegin,startdieloseborrow,lendbeaway(off),beoutofbehere,bein+某地havebeoverbeonbedeadbelostkeep/have注意:在否定句中,非延续性动词可以与时间段连用。例如:Ihaven’tseenhimforalongtime.我很久没见到他了。Ihaven’theardfromhersincesheleft.自她离开以后,我一直没收到她的来信。语法精练Ⅰ.单项填空(A)1.—Excuseme,whereisMrBrown’soffice?—Sorry,Idon’tknow.Ihereforonlyafewdays.A.haveworkedB.workedC.workD.willwork(D)2.MygrandmotheralotofchangesinTianjinsinceshecamehere.A.seesB.canseeC.willseeD.hasseen(D)3.ImanynewfriendssinceIcamehere.A.makeB.madeC.willmakeD.havemade语法精练(B)4.—Lookatthesestamps.Ithemforfiveyears.—Wow,theyarewonderful.A.keptB.havekeptC.haveboughtD.havebrought(D)5.IMrSmithsincehemovedtoShanghai.A.didn’thearfromB.don’thearfromC.won’thearfromD.haven’theardfrom(C)6.NotonlyJimbutalsohisparentsafewinterestingplacessincetheycametoChina.A.willvisitB.hasvisitedC.havevisitedD.visited语法精练(C)7.Myauntisawriter.Shemorethantenbookssince1980.A.writesB.wroteC.haswrittenD.willwrite(A)8.Mikefortenyears.Hestillloveshiswifeverymuch.A.hasbeenmarriedB.marriedC.gotmarriedD.hasmarried(D)9.Mybrotherhasthearmyforthreeyears.A.joinedB.takenpartinC.joinedinD.beenin(B)10.—haveyoubeenlikethis?—SinceFriday.A.HowsoonB.HowlongC.HowoftenD.Howmanytimes语法精练Ⅱ.根据句意用for或since填空1.Wehaven’tseeneachotherforalongtime.2.HisfatherhasbeeninthePartysince10yearsago.3.Thefilmhasbeenonfor20minutes.4.MrGreenhasworkedheresincehecametoChina.5.Hisgrandparentshavebeendeadforseveralyears.