Unit14__Grammar__精品课件.ppt
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1、Unit 14 Have you packed it yet?Section A Grammar,Grammar 现在完成时的用法 现在完成时表示过去某时发生的行为对主语目前产生的影响。即用过去发生的某个行为来说明现在的某种情况。We are good friends.(现在的情况)I knew him in 1997.(过去的动作),We have known each other since 1997.(现在完成时把过去的动作和现在联系起来并着眼于现在)She has been to Beijing.(现在已不在北京,从结果上和现在联系起来)She has been in Beijing
2、for two years.(现在仍在北京,从时间上和现在联系起来),现在完成时的三种基本用法:1、未完成用法。表示动作或状态开始于过去,一直延续到现在,可能继续发展,也可能刚刚结束。He has been in the army for ten years.I have studied English since 1980.He has lived here all his life.a.be,live,study 都是延续性动词。,b.常用的时间状语:since,for,in the past few years,so far,all his life.,2、反复性用法,表示过去到现在这段
3、时间内反复发生的动作。I have been to the city twice this week.I have often wondered where she gets her money all these days.这种用法从时间上与现在发生了联系。,3、完成性用法,表示动作或状态到说话时已经完成,通常所产生的结果把过去的动作和状态和现在联系起来。He has gone to Shanghai.他已经去了上海。(结果:他已不在这儿),Can you make sure _ the gold ring?A.where Alice had putB.where had Alice put
4、C.where Alice has putD.where has Alice put 使用现在完成时表示过去发生的“放”的动作对现在的影响,究竟金戒指现在“在哪里”。,When I was at college I _ three foreign languages,but I _ all except a few words of each.A.spoke;had forgottenB.spoke;have forgottenC.had spoken;had forgottenD.had spoken;have forgotten“但都忘了”是现在的情况,要用现在完成时,强调结果。,-Im
5、sorry to keep you waiting.-Oh,not at all.I _ here only a few minutes.A.have been B.had beenC.was D.will be“(for)only a few minutes”说明几分钟前来了这里,一直到现在。,-_ the sports meet might be put off.-Yes,it all depends on the weather.A.Ive been told B.Ive toldC.Im told D.I told“被告知”是过去的事,对现在的影响是“我已知道”。,The price
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