现在完成时公开.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,现在完成时公开课课件,Studying aims,1.,现在完成时的构成,2.,现在完成时的主要用法,及相关的时间状语,3.,短暂性动词与时间段的关系,4.have been,与,have gone,比较,5.,与一般过去时的用法比较,夏天,还会远吗?,will it still be far in,summer,?,春天,已经来了,Spring,has,already,come,现在,完成,时态,Spring,has,already,come,.,一,),构成,:,have,/,has,+,动词,过去分词,基本结构,The present perfect tense,have/has+done,助动词（可以帮助构成肯定、疑问和否定句）,1.He has cleaned his room.,(,写一个一般疑问句）,Has,he,cleaned his room?,2.She has lived in London,for four years.,(,划线部分提问）,How long,has,she,lived in London?,3.He has been to China,_ _?,（写出反义疑问句部分）,hasnt he,4.They have come back from work.,(,写否定句）,They,havent,come back from work.,(,一,),表示过去发生的动作或事情对现在的影响和产生的结果,.,它强调的是过去的动作同现在的联系,.,常用的时间状语有,already,yet,ever,never,just,before,等,.,现在完成时的主要用法,A:_ your brother _ his homework yet?(finish),B:Yes,he s already done it.,Key,words,Has finished,yet,already,注意：,already,用于肯定句，,yet,用于疑问句和否定句中,A:_ you ever _ to the park?(be),B:No,never.,Key,words,Have been,yet,already,ever,never,注意：,ever,曾经 用于疑问句中,never,从不 带有否定意义,I _ just _ the desk,you can take it to your classroom.(mend),Key,words,have mended,yet,ever,never,just,already,Just,刚刚 与现在完成时连用 一般置句中,Just now,刚才 与一般过去时连用,(,二,),表示一个从过去开始,一直持续到现在,有可能继续下去的动作或状态,.,通常和,for,或,since,引导的时间状语连用,.,Tom _ in the factory since he left school ten years ago.(work),Key,words,has worked,since,since,后面带,过去时间,或,有一般过去时,的句子,A:How long _ you _ in this school?(teach),B:For 6 years.,Key,words,have taught,since,for,+,一段时间,We _ only _ 100 trees so far.(plant),Key,words,have planted,so far,到目前为止,Key,words,yet,ever,never,since,for,just,before,already,so far,in the past 10 years,twice,也可以是其他表示次数的词,how long,Some verbs cant often be used with for or since,He has bought the book.,He has bought the book for a week.,He has had the book for a week.,buy,have,come/go/get to,be,in,join,be,in,be a member,leave,be,away,borrow,keep,begin,be,on,finish,be,over,die,be,dead,reture,be,back,Please point out any mistakes and correct,She has bought the computer for two years.,had,buy,have/has,had,Please point out any mistakes and correct,How long have you come to the United States,？,been in,come to,have/has,been in,buy,have/has,had,Please point out any mistakes and correct,Ann has gone to China since three months ago.,been in,come to,have/has,been in,buy,have/has,had,go to,have/has,been in,Please point out any mistakes and correct,I have left Shanghai for 3 days.,been away for 3 days.,come to,have/has,been in,buy,have/has,had,go to,have/has,been in,got to,have/has,been in,join,have/has,been in,have/has,been a soldier,leave,have/has,been away,Please point out any mistakes and correct,I have borrowed the dictionary since 3 days ago.,kept,come to,have/has,been in,buy,have/has,had,go to,have/has,been in,got to,have/has,been in,join,have/has,been in,have/has,been a soldier,leave,have/has,been away,borrow,have/has,kept,Please point out any mistakes and correct,The film has begun for 10 minutes.,been on,come to,have/has,been in,buy,have/has,had,go to,have/has,been in,got to,have/has,been in,join,have/has,been in,have/has,been a soldier,leave,have/has,been away,borrow,have/has,kept,begin,have/has,been on,Please point out any mistakes and correct,The concert has finished for half an hour.,been over,come to,have/has,been in,buy,have/has,had,go to,have/has,been in,got to,have/has,been in,join,have/has,been in,have/has,been a soldier,leave,have/has,been away,borrow,have/has,kept,begin,have/has,been on,finish,have/has,been over,Please point out any mistakes and correct,His dog has died for two years.,been dead,come to,have/has,been in,buy,have/has,had,go to,have/has,been in,got to,have/has,been in,join,have/has,been in,have/has,been a soldier,leave,have/has,been away,borrow,have/has,kept,begin,have/has,been on,finish,have/has,been over,die,have/has,been dead,can you distinguish?,have,been to,have,gone to,have been in,去过某地已经回来,常与,ever,never,once,twice,连用,一直留在某地,与,for/since,连用,用,how long,提问,去了某地,还没回来,只用于第三人称,Her sister _ Australia,She left this morning.,has gone to,can you distinguish?,have/has,been to,have/has,gone to,have/has,been in,去过,常与,ever,never,once,twice,连用,在,与时间段连用,用,how long,提问,去了,说话时某人不在,只用于第三人称,A:How long _ you _ China?,B:I _ here for 3 years,.,have been,have been in,can you distinguish?,have/has,been to,have/has,gone to,have/has,been in,去过,常与,ever,never,once,twice,连用,在,与时间段连用,用,how long,提问,去了,说话时某人不在,只用于第三人称,A:_ you ever _ the city?,B:No,never.,Have been to,与一般过去时的用法比较,现在完成时和一般过去时都是说过去的事情，,但现在完成时注意的不是事情本身,而是强调事情与现在保持的某种密切联系（如现在的结果，影响,一直延续到现在等）,;,而一般过去时，则只,讲述,发生在过去的动作和事情,与现在没有关系,。,上一页,下一页,主菜单,The past tense or the present perfect tense,We _ each other since childhood.,We _ each other when we were young.,know,have,known,knew,The past tense or the present perfect tense,I _ him just now.,(see),I _ just _ my pen.(lose),saw,have,lost,The past tense or the present perfect tense,A:When_ you _ the film?,B:I _ it two months ago.(see),The writer _ several story-books since 5 years ago.(finish),did,has finished,see,saw,用动词的适当形式填空,1.-_ you _your pen?(mend),-Yes,I _.,-When_ you _ it?,-I _ it yesterday.,2.-How do you like the film?,-I _(not see)such a moving film,before.,3.Millies sister _(join)the club last week.,So she _(be)in the club for nearly,one week.,Have,mended,have,did,mend,mended,havent seen,joined,has been,Exercises,4.My father_(give)up _(smoke).,He doesnt _(smoke)now.,5.The Green family_(not come)back,yet from the cinema.,They_(go)to see a film one hour ago.,has given,smoking,smoke,havent come,went,6.She has known Sam_ nine years.,(for,never,since),7.They have_arrived.,(ever,just,yet),8.Have you_ ridden a horse?,(ever,for,yet),9.She has known Fred_ they were,at primary school.,(already,just,since),10.We have not completed the,project_.(already,for,yet),for,just,ever,since,yet,Write a passage about travel to use the present perfect tense.,Homework,