现在完成时态.docx

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1、现在完成时1.概念：表示过去发生的某一动作对现在造成的结果或影响；也可表示某一动作过去已经开始，一直持续到现在。如：Hedidn’tgotothemoviebecausehehasseenit.Theyhavelivedherefortenyears.2.构成：have/hasdone否定形式：have/hasnotdone疑问句：把have/has提前Ihavefinishedmyhomework.Ihaven’tfinishedmyhomework.Haveyoufinishedyourhomework?---Yes,Ihave./No,Iha

2、ven’t3.用法：现在完成时通常和以下时间状语连用：already,never,ever,just,before,yet,inthelast/pastfewyears,since+点时间，for+段时间。如：Ihaveneverheardofitbefore.Theyhavejustfinishedtheproject.Greatchangeshavetakenplaceinourcityrecently.1.already和yet①already“已经”，一般用于肯定句，与完成时连用。如：Ihavealreadyfedthecat.②否定句和疑

3、问句用already表示惊讶。如：Hashegonetobedalready?③yet“已经，还”，一般用于否定句和疑问句，与完成时连用。如：Haveyoupackedthecamerayet?IhavenotyetbeentotheGreatWall.2.since和forsince+点时间；for+段时间，谓语动词必须是延续性动词。Shehasstudiedinthisschoolsince2012.Shehasstudiedinthisschoolsincetwoyearsago.Shehasstudiedinthisschoolfortwo

4、years.翻译：我们已经等你一个小时了。________________________________________________________________________________________1.非延续性动词与延续性动词之间的转化。当现在完成时与段时间连用时，谓语动词必须是延续性动词，非延续性动词必须转化为延续性动词。如：Themeetinghasstartedforhalfanhour.Themeetinghasbeenonforhalfanhour.start---beonfinish---beoverborrow--

5、-keepgo/leave---beawaycome---beinjoin---beinbuy---havedie---bedeadmarry---bemarriedreturn---bebackfallasleep---beasleep1.OurEnglishteacherisverynice.We____friendssincethreeyearsago.A.wereB.becameC.havebeenD.havemade2.He____hishometownfortwentyyears.Hereallymissedit.A.hasbeenaw

6、ayfromB.leftC.hasleftD.isawayfrom3.Jack____theMP4fortwoyears.A.boughtB.haveboughtC.hashadD.hasbought注意：在否定句中，非延续性动词可以和段时间连用。如：Wehaven’tmetformanyyears.1.havegoneto、havebeento和havebeenin①havegoneto“去某地了”，还未回来，可能在路上，也可能在某地。如：Myfatherisn’tathome.Hehasgonetowork.②havebeento“去过某地”，

7、强调曾经到过，现在已不在某地。如：Ihavebeentothezootwice.③havebeenin“来到某地”，通常和段时间连用。如：Theyhavebeeninthecityforthreedays.1.--I’dlikeyoutotellmesomethingaboutthemuseum.---Sorry,butneitherJacknorI______there.A.havebeenB.hadbeenC.havegoneD.hasgone2.Whyareyouworried?---I’mexpectingacallfrommydaught

8、er.She_____NewYorkforthreedays.A.hasgonetoB.hasbeentoC.hasbee