文档介绍：一、时态讲解:现在完成时一现在完成时不能和表示过去的时间状语连用,如yesterday,lastyear,in1976,twodaysago,justnow但可以和already,yet,ever,never,before,lately,recently,once,twice, hasgone(to),hasbeen(to),hasbeen(in)的区别 Havegone(to):去了(现在不在说话现场)Havebeen(to):去过(已不在去过的地方)Havebeenin:呆了多久(还在所呆的地方)MyfatherhasbeeninShanghaifortwomonths./sincetwomonthsago三短暂性动词不能和表一段时间的时间状语for..,since..连用。e,go,arrive,close,leave,begin,buy,join,die,等。必须将动词改为延续性动词。现归纳总结一下由非延续性动词到延续性动词的转换buy→have                             die→bedead                            leave→beawayborrow→e/go/arrive→bein                         close→beclosed][open→beopen join→bein,beamemberof finish(end)→beover][ begin,(start)→beon                    四Exercise:一)用never,ever,already,just,yet,for,,.“Haveyou________seenthefilm?”“No,Ihave________seenit.”5.“Hasthebusleft_______?”“Yes,ithas_________left.”二)、用have/hasbeento/in,o及go的各种形式填空。1)-WhereisJack?-)))Howlong_____they_____thisvillage?5))_____youever____America?--Yes,))WhereisJim?)When_____he_____?)Wouldyouliketo___tothezoowithme?---Yes,)Wher