新人教版选修八Unit5Meetingyourancestors-Grammar[课件].ppt

Present Perfect ContinuousUnit 5 Meeting your ancestorsMy younger brother the net.has been accessingThe baby for 1 hour.has been sleepingThey basketball all the day.have been playing The boy a book for almost 4 hours.has been readingHe with his girlfriend.has been talking The telephone for almost a minute.The sound has continued about one minute.The telephone is ringing.has been ringingThe young boy TV.has been watchingThe two robots since they have been made.have been dancing and singingI don,t know why the pig .has been runningThey has been playing games in the school.Play games Oh,you have come at last!I have been waiting for you for two long hours.(我等了你足足两个小时我等了你足足两个小时)I,m sorry!nYou have been crying.(你一直在哭.)nI have been knocking.n I dont think anybodys in.n(我一直在敲门。我想没人在里面。)You are here!I have been looking for you long.（我找了你老半天）（我找了你老半天）现在完成进行时1.构成形式：hashave been doing2.用法用法1,叙述某一动作从过去开始一直继续到现在仍在继续之叙述某一动作从过去开始一直继续到现在仍在继续之中或刚刚停止。经常与中或刚刚停止。经常与for,since,for,since,recently,recently,all all morning/day/weekmorning/day/week,how long,all the time,how long,all the time用在一起用在一起。n1)You have been studying for four straight hours.Why dont you take a break?n2)The telephone has been ringing for almost a minute.Why doesnt someone answer it?2,叙述从过去某时开始一直继续到现在，但不叙述从过去某时开始一直继续到现在，但不再继续下去的事情。带有浓厚的感情色彩，再继续下去的事情。带有浓厚的感情色彩，强调持续了强调持续了“那么久那么久”或做得或做得“那么辛苦那么辛苦”n1)Oh,you have come at last!I have been waiting for you for two long hours.(我等了你足足两个小时我等了你足足两个小时)n2)You are here!I have been looking for you long.（我找了你老半天我找了你老半天）3,叙述“最近”一直从事的工作或活动。lately,recentlynWhats the matter?Your eyes are red and puffy.Have you been crying?(你是不是一直在哭？)4,叙述从过去某时到现在，或最近，一再重复的动作。nI have been knocking.I dont think anybodys in.(我一直在敲门。我想没人在里面。)nI have been writing letters since breakfast.(我从早餐起就一直在写信)The Present Perfect Tense 现在完成时现在完成时:基本用法基本用法 现在完成时表结果现在完成时表结果,他的动作发生在过他的动作发生在过去去,但是对现在有影响但是对现在有影响,而这种影响却往往是而这种影响却往往是说话人的兴趣所在。现在完成时跨越两个时说话人的兴趣所在。现在完成时跨越两个时间间,一个是过去一个是过去,另一个是现在。另一个是现在。Lead-ine.g.我从我从1975年起就学英语。年起就学英语。I have studied English since 1975.自自12世纪以来世纪以来,中国就使用彩色印刷了。中国就使用彩色印刷了。They have done color printing in China since the 12th century.Consolidation1.Hi,Tracy,you look tired.Im tired.I _ in the living room all day.A.painted B.had painted C.have been painting D.have painted 2.There is so much snow these days,isnt there?Yes,it _ for a few days.A.was snowing B.has been snowing C.had been snowing D.snowed3.Although these scientists _ on the project for nearly four years,I dont know how long it will last.A.have been working B.had worked C.were working D.are working 4.Now that she is out of job,Lucy _ going back to school,but she hasnt decided yet.A.had considered B.has been considering C.considered D.is going to consider5.The little boy is dirty from head to foot because he _ in the mud all morning.A.has played B.is playing C.has been playing D.was playing6.Sincce the beginning of the vocation,I _ across the country,and my next stop is the Wuyi Mountain.A.has traveled B.will travel C.have been traveling D.was traneling 1.A:-I am sorry I _(keep)you waiting so long.B:-It is all right.I _(read)the newspapers.2.The CCTV _(broadcast)English programmers ever since 1977.用现在完成时和完成进行填空用现在完成时和完成进行填空:have kepthave been readinghas been broadcasting3.You _(feel)better when you _(take)the medicine.4.She said we _(may keep)the book as long as we _(like).5.Please wake me up if I _ still _(sleep)when you _(come).6.My sister _(learn)English since she _(be)a child.She _(speak)English fluently now.will feelhave takenmight keeplikedamsleepingcomehas been learningwasspeaks 7.My uncle _(come)to see us.He _(arrive)here a few days ago.I _ _(start)for Sydney tomorrow morning.8.He _(break)his glasses when he _(play)in a football match.has comearrivedam going to startbrokewas playing下列各句均有一处错误，请指出并改正。下列各句均有一处错误，请指出并改正。1.The water has been run the whole night.2.2.Hello,Tom.I have looking for you all morning.Where have you been?runningrunbeen3.His cool expression suggested that he want to leave.4.He tried to harm other people,only to ruining himself.5.If only I can speak several foreign languages!wantwantedruiningruincancould6.We can all leave together assumed that the others arent late.7.Paul is very tired.He had been working very hard all morning.has assumedassuminghad 1.Learn useful words and expressions by heart and practice them.2.Finish Ex.1 and 2 on pages 40,79 and 80.Homework