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2020/3/2312020/3/2322020/3/2332020/3/234陈述句主+has/have+过去分词+…12Hahasworkedfor9hours.他已经工作九小时了疑问句Has/have+主+过去分词+…?12Hasheworkedfor9hours?他已经工作九个小时了吗?否定句主+has/havenot+过去分词+…12Hehasnotworkedfor9hours他还没有工作九个小时2020/3/235动作发生在过去某个不确定的时间,但对现在留下了某种影响和结果。常被just、already、yet等副词修饰。如-Haveyouhadlunchyet?-Yes,Ihave.I'vejusthadit.你（已经）吃午饭了吗？我刚刚吃过。（现在我不饿了）表示从过去某一时刻开始一直持续到现在的动作或状态。这个动作可能刚停止，可能仍然在进行。常带有for和since等表示一段时间的状语。如：Hehastaughtheresince1981他自1981年就在这儿教书。（可能还要继续教）Ihaven'tseenherforfouryears.我有四年没见到她了。2020/3/236already一般用于肯定句中，yet一般用于否定句和疑问句中。1.Wehavealreadyfinishedourhomework.我们已完成作业2.Theyhaven'tfinishedtheirhomeworkyet.他们还没有完成作业。用ever和never。多用于否定或疑问句中，表示“曾经”或“从未“等。1.HaveyoueverbeentotheGreatWall?你曾经去过长城吗？2.IhaveneverbeentotheGreatWall.我从未去过长城。用表示到说话为止的过去时间状语，如just,，before，,uptonow,，thepastfewyears等。1、Ihaveseenherbefore,，butIcannotrememberwhere.我以前见过她，但记不起在哪里见过。2、Hehasbeentherethreetimesthelastfewdays.近几年他去过那里三次用包括“现在”在内的时间状语，如：now,today,thismorning(month,year..)例如：-Haveyoumethimtoday?-No,Ihaven‘t.今天你见过他吗？我没有。Howmanytimeshaveyoubeentherethisyear?今年你去过那里多少次？2020/3/237Hehasdiedforayear.错Hehasbeendeadforayear.对Shehasputonashirtforamorning.错Shehasbeeninashirtforamorning.对2020/3/238arrivebein+地点diebedeadfallill(asleep,sick)beill(asleep,sick)getupbeupgetoutbeoutfinishbeoverPutonwearopenbeopenjoinbeinclosebeclosedborrowKeep/havebuyKeep/havecatchacoldhaveacoldleavebeawaymarrybemarriedbegintoworkwork2020/3/239Sbbeinterestedin结构的时态记忆:sbhasbeen+interested…Ihavebeeninterestedinthegameforseveraldays.Hehasbeensurprisedatthenews.Havegoneto去而未回-havebeento曾去过某-havebeenin一直在某地Hismotherhasbeeninherhometown.他的妈妈一直在家乡待着Shehasneverbeentootherplaces她从没有去过其他地方JohnhasgonetoEngland.琼去了英格兰现在完成时的标志词Since(表自从时)---Sofar到目前为止Wehavebeenoverallworksofar.到目前为止，我们已经完成了所有工作现在完成时与过去完成时的区别现在完成时与一般过去时的区别2020/3/2310练习:用一般过去时或现在完成时完成句子1.They(go)toAmericalastyear.2.Iamsorry,I(forget)yourname.3.Myfriend(finish)collegelastyear.4.He(notspeak)tomesincetheclass(begin)5.She(buy)abikelastmonth.6.Theman(lose)moneyyesterday.7.I(read)thebookinthelibrary.8.I(get)backtheumbrellawhichIleftinthebus.9.I(neverhear)herspeakinpublic(公共场所)2020/3/231110.A:I(get)upearlythismorningand(have)breakfastat7:00a.m.afterbreakfast,I(work)atmylessons.B:I(nothave)mybreakfastuntilnow.11.Yourdinnerisready;I(put)itonthetable.12.You(send)theletteroffyesterday?13.Bill(notfind)hiswatchyet.14.Iamnothungry.I(justhave)mydinner.15.He(come)justamomentago.16.He(be)inBeiJingfor30years.He(come)herein19952020/3/23121.Went2.Haveforget3.Finish4.hasnotspokenbegan5.Bought6.Lost7.Read8.Havegot9.Haveneverheard10.Got,had,worked,haven’thad11.Haveput12.Did…send13.Hasn’tfound14.Havejusthad15.Came16.Hasbeen,came2020/3/2313