现在完成时(讲课用).ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,Present Perfect Tense,现在完成时,2.,一般疑问句及否定句的结构,3.,现在完成时的用法,1.,现在完成时的构成,4.,时间状语,主语,+,havehas,+,动词过去分词,助动词,：,talk-,like-,study-,stop-,havehas,动词过去分词变化规则：,talk,ed,like,d,stud,ied,stop,ped,2.,一般疑问句及否定句的结构,3.,现在完成时的用法,1.,现在完成时的构成,4.,时间状语,Have/Has,+,主语,+,动词过去分词,疑问式：,I have finished my homework.,Have you finished your homework?,3,A:Have you surfed the internet(,上网,)?,B:Yes,I have.,I have surfed the internet.,No,I havent.,I havent surfed the internet.,4,talk on the phone for an hour,play soccer,eat(eaten),potato chips,see (seen)a tiger,2.,一般疑问句及否定句的结构,3.,现在完成时的用法,1.,现在完成时的构成,4.,时间状语,Have/Has,+,主语,+,动词过去分词,否定式,:,主语,+,have/has,+not+,动词过去,分词,.,疑问式：,We,have visited the museum.(,改为一般疑问句,),2)They,have seen the film.(,改为否定句,),3)He,has returned,the book,.(,对划线部分提问,),4)Jenny,has,had,her,lunch for three days.,(,改为一般疑问句并做否定回答,),Have you visited the museum?,have not=havent,has not=hasnt,6,2.,一般疑问句及否定句的结构,3.,现在完成时的用法,1.,现在完成时的构成,4.,时间状语,Have/Has,+,主语,+,动词过去分词,否定式,:,主语,+,have/has,+not+,动词过去,分词,.,疑问式：,We,have visited the museum.(,改为一般疑问句,),They,have seen the film.(,改为否定句,),3)He,has returned,the book,.(,对划线部分提问,),4)Jenny,has,had,her,lunch for three days.,(,改为一般疑问句并做否定回答,),They havent seen the film.,7,2.,一般疑问句及否定句的结构,3.,现在完成时的用法,1.,现在完成时的构成,4.,时间状语,Have/Has,+,主语,+,动词过去分词,否定式,:,主语,+,have/has,+not+,动词过去,分词,.,疑问式：,We,have visited the museum.(,改为一般疑问句,),2)They,have seen the film.(,改为否定句,),He,has returned,the book,.(,对划线部分提问,),4)Jenny,has,had,her,lunch for three days.,(,改为一般疑问句并做否定回答,),What has he returned?,2.,一般疑问句及否定句的结构,8,2.,一般疑问句及否定句的结构,3.,现在完成时的用法,1.,现在完成时的构成,4.,时间状语,Have/Has,+,主语,+,动词过去分词,否定式,:,主语,+,have/has,+not+,动词过去,分词,.,疑问式：,We,have visited the museum.(,改为一般疑问句,),2)They,have seen the film.(,改为否定句,),3)He,has returned,the book,.(,对划线部分提问,),4)Jenny,has,had,her,lunch for three days.,(,改为一般疑问句并做否定回答,),Has Jenny had her for three days?,No,she,hasnt.,9,present(now),future,past,Mum,I,have,already(,已经,),cleaned,them.,John,clean your teeth please.,10,2.,一般疑问句及否定句的结构,3.,现在完成时的用法,1.,现在完成时的构成,4.,时间状语,1),过去发生,或已经,完成,的某一动作,对现在造成的影响或,结果,。,2),现在完成时表示从过去一直持续到现在的动作或状态,。,Someone has broken the,door.,(,窗户现在是坏的,),I have,already,lost the key.,(,我现在没有钥匙,),I havent read that book,yet,.,(,不了解书的内容,),I have,just,cleaned my hands.,(,手是干净的,),2.,一般疑问句及否定句的结构,3.,现在完成时的用法,1.,现在完成时的构成,4.,时间状语,1),过去发生,或已经,完成,的某一动作,对现在造成的影响或,结果,。,2),现在完成时表示从过去一直持续到现在的动作或状态,。,She,has learned English,for,5 years.,He has lived in Beijing,since,(,自从,)he was born.,Have you stayed here,since,(,自从,)3 oclock,?,12,Have,you ever,read,Little Woman?,I,havent read,it,yet,.,But I,have had,the book,for ten years.,And I,have,kept it on my bookshelf(,书架）,since ten years ago.,3.,现在完成时的用法,2.,一般疑问句及否定句的结构,1.,现在完成时的构成,4.,时间状语,13,2.,一般疑问句及否定句的结构,3.,现在完成时的用法,1.,现在完成时的构成,4.,时间状语,for+,时间段,since+,Mr.Brown has had his TV _ 15 years.,Ive taken driving lessons _ last month.,My sister has had her cell phone _ a month.,My friends havent visited me _ my birthday.,We havent used our car,_,a long time.,She hasnt had a good cup of coffee,_years,.,Tom has worn glasses _ he was 7 years old.,for,for,for,for,since,since,since,时间点,句子,2.,一般疑问句及否定句的结构,3.,现在完成时的用法,1.,现在完成时的构成,4.,时间状语,for+,时间段,since+,时间点,句子,already,(,已经,),yet,(,已经,),just,(,刚刚,),ever,(,曾经,),never(,从来没有）,before,（从前）,肯定句中,否定,，疑问句末,肯定句中,肯定,、否定句中,句中,句末,15,一般过去时与现在完成时之,比较,1,）一般过去时表示过去某时发生的动作或单纯叙述过去的事情，强调,动作,，和现在不发生关系。而现在完成时表示过去发生的某一动作对现在造成的影响或结果，强调的是,现在的,情况,。,2,）一般过去时常与具体的时间状语连用，而现在完成时通常与模糊的时间状语连用，或无时间状语,。,一般过去时的时间状语有：,yesterday,last week,，,ago,in1980,in October,just now,等具体的时间状语。,共同的时间状语有：,this morning,tonight,this summer,before,already,等。,现在完成时的时间状语有：,for,since,ever,never,just,already,yet,in past years,等不确定的时间状语,。,16,请,大家认真分析比较下列各例句：,I saw this film yesterday.,（,只说明动作发生在过去。）,I have seen this film.,（,强调对现在的影响，电影的内容已经知道了。）,She,has returned from Paris.,（,她已从巴黎回来了。）,She,returned yesterday.,（,她是昨天回来的。）,He,has been in the League for three years.,(,在团内的状态可延续,),He,joined the League three years ago.,(,三年前入团，,joined,为短暂行为。,),注意,：,句子中如有一般过去时的时间副词,（如,yesterday,last week,in 1960,）,时，不能使用现在完成时，要用过去时。,例如：,（错）,Tom has written a letter to his parents last night.,（对）,Tom wrote a letter to his parents last night.,1,.,I _(,wait)for him for two hours.I am very angry.,2.,He _,(be)a doctor since he was twenty.,3.,The,film,_,(be)on for fifteen minutes.,4.,_,you ever _(read)that book before?,5.,_,you ever _(try)to change her?,6.,No one,_,(arrive)here yet.,7.,_,the bus _(leave)yet?,8.,I _,(not talk)to him yet.,Havent talked,Has left,has arrived,Have tried,Have read,has been,has been,h,ave waited,用所给动词的适当形式,填空,9.,I_already,_,(see)thefilm.I,_,(see)it,last,week.,10.,Look!Themonkey_(climb)thetree,.,11.,My,father,_just,_,(come)backfromwork.He,is,tired,now.,12.,Thestudents_(read)Englishwhentheteachercamein.,13.,I,_,(work)heresinceI_(move)herein1999,.,14.,SofarI_(make)quiteafewfriendshere,.,15.,Howlong,_,the,Wangs,_(,stay)here?For,two,weeks.,16.,I_just_(finish)myhomework.,17.,He_(go)toschoolonfooteveryday.,18._,you_(find)yoursciencebookyet?,is climbing,were reading,moved,have worked,have made,goes,have stayed,have finished,Have found,saw,have seen,has come,1,.She has done her homework.(,改否定句,),2.She has already told us the news.(,改否定句,),3.The rain has already stopped.(,改一般疑问句,),4.I have waited here,for two hours,.(,划线提问,),5.He has lived,in,ShangHai,since he left Beijing.(,划线提问,),6.They have bought a new car,_ _?(,反义疑问句,),7.She has learned French since 2002.(,同意句,),She has learned French _ 2 years.,She has learned French _ 2 years _.,She hasnt done her homework.,She hasnt told us the news yet.,Has the rain stopped yet?,How long have you waited here?,havent they,for,since,ago,Where has he lived since he left Beijing?,按要求改变句子,。,Translate the following sentences.,你已经找到你的书了吗,?(find-found),他们在这个城市建了许多房子,.(build-built),Judy,还没到达,.(arrive-arrived),你吃过早饭了吗,?(have-had),她刚刚离开,.(leave-left),Have you found your book yet?,They have built many buildings in this city.,Judy hasnt arrived yet.,Have you had breakfast?,She has just left.,Thank you for listening!,