**现在完成时**陈述句:主语+have(has)+过去分词构成现在完成时构成否定句:主语+have(has)+not+过去分词一般疑问句:have(has)+主语+过去分词动词的过去分词规则变化:直接在动词词尾+ed不规则变化:am/is-was-beenare-were-beenbegin-began-begunbreak-broke-brokendo-did-donedraw-drew-drawndrink-drank-drunkdrive-drove-driveneat-ate-eatenfall-fell-fallenfly-flew-et-forgot-forgottengive-gave-givengo-went-gonegrow-grew-grownhide-hid-hiddenknow-knew-knownlie-lay-lainride-rode-riddenring-rang-rungshow-showed-shownsee-saw-seensing-sang-sungspeak-spoke-spokentake-took-e-erun-ran–e-became-ejust(刚刚),already(已经),yet(用于一般疑问或否定句:还),(从前),ever,①Ihaveneverheardofthatbefore.②Haveyoueverriddenahorse?③Shehasalreadyfinishedthework.④Haveyoumilkedthecowyet?Yes,hatalready.⑤I’vejustfinishedmyhomework.⑥+一段时间例如:foraweek,+.,inthelastfewyears,sofar,bynow,也与现在完成时连用。.Ihaven’::什么时候开走的?A:::你在哪儿买的?A::你看过这部电影吗?B:::::::haveyouseenthefilm?B:Yes,:Whendidyouseeit?B::I`:Wheredidyoubuyit?A:、非延续性动词与现在完成时短暂性动词在肯定句、疑问句中不能与时间段连用,如:e,begin,buy,borrow,e,die,fall,finish,gettoknow,go,join,leave,marry等。常用相应的延续性动词have,keep等来代替非延续性动词。他入党五年了。HejoinedthePartyfiveyearsago.——HehasbeeninthePartyforfiveyears.——HehasbeenaPartymemberforfiveyears.——itisfiveyearssincehejoinedtheParty电影开始五分钟了。Thefilmbeganfiveminutesago.——Thefilmhasbeenonforfiveminutes.——e/go—be(in)leave—beawayborrow—keepbuy—havedie—bedeadbegin—beongoout—beoffarrive–behere/theremarry/getmarried(to)—bemarried(to)join……—bein……__beamemberof……
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