初中英语人教版八年级下册现在完成时ppt课件.ppt

,now,past,I began to teach English 24years ago.,=I have taught English for 24 years.,I am teaching English now.,=I have taught English since 24 years ago.,我 教了 英语24年了.,（含义：1.我在过去某个时间开始教英语 2.我现在还在教英语。）,now,past,I began to study English 8years ago.,I have studied English for 8 years.,I am studying English now.,I have studied English since 8 years ago.,How long have you studied English?,now,past,I moved to Dongguan in 2007.,I have lived in Dongguan for 10 years.,I am living in Dongguan now.,I have lived in Dongguan since 2007.,How long have you lived in Dongguan?,I have lived in Dongguan since I was born.,Ask&answer:,How long have you lived in Dongguan?,I have lived in Dongguan for _.,I have lived in Dongguan since _.,I have studied English for _.,I have studied English since _.,How long have you studied English?,Ask&answer:,How long has he/she lived in Dongguan?,He/She has lived in Dongguan for_.,He/She has lived in Dongguan since_.,He/She has s tudied English for _.,He/She has studied English since _.,How long has he/she studied English?,now,past,I began to teach English at this school fiveyears ago.,I have taught English at this school for five years.,用法2：,表示过去开始发生，持续到现在的动作或状态。(谓语动词必须是“延续性”),标志词：for，since,how long,these years,so far,in the past/last years,since+since+since+,时间段+ago,时间段,一般过去时句子,某年/月/日/时刻,_ last month_ a month_ 10 years_ I came here_ a long time_ 2 weeks ago_ she left,_ 5 years ago_ 5 years _2 oclock_ 2 hours _ 15 years _I was born _ 1999,since+,for+,since,since,since,since,since,since,since,since,for,for,for,for,for,for,since 与 for：,过去时间点,1.Theyve known each other since_.A.1995 B.three years 2.Ive been interested in Chinese for_.A.last year B.one year 3.She has been a doctor for_.A.two years B.two years ago 4.Ive had a headache since_.A.I got up this morning B.five hours 5.Weve been here for_.A.one hour B.one oclock,A,A,B,A,B,1.They _(write)15 songs so far.2.The population _(grow)more slowly in the past ten years.3.He _(be)in China these years.,have written,has grown,has been,现在完成时标志词：for，since,these years,so far,in the past/last years,now,past,My grandpa died 8years ago.,My grandpa _ for 8 years.,He is dead now.,My grandpa _since 8 years ago.,has been dead,has been dead,My grandpa has died for 8 years.,我爷爷去世8年了。,（短暂性）,now,past,I bought my bike 2years ago.,I _ my bike for 2 years.,I have my bike now.,I _ my bike since 2 years ago.,have had,have had,I have bought my bike for 2 years.,我买了我的单车两年了。,（短暂性）,now,past,My father left here 2 weeks ago.,My father _ for 2 weeks.,He is away now.,My father _ since 2 weeks ago.,has been away,has been away,My father has left for 2 weeks.,我爸爸离开了两周了。,（短暂性）,now,past,My sister fell asleep 2hours ago.,My sister _ for 2 hours.,She is asleep now.,My sister _since 2 hours ago.,has been asleep,has slept,My sister has fallen asleep for 2 hours.,我妹妹睡了两小时了。,（短暂性）,a.短暂性动词不能与for、since等表示时间段。，不能与for、since等表示一段时间的词连用。b.短暂性动词不能用于how long引导的疑问句中。c.短暂性动词不能用于进行时。,延续性动词和短暂性动词,短暂性动词:go/come/begin/start/die/buy/borrow/sell/leave/arrive/receive/become等词语是瞬间动词,表示的动作不能延续,动作,die,be over,leave,borrow,arrive here,begin/start,finish,join,keep,be away,be here,be on(上演）,be in,be dead,buy,have,短暂性动词转换延续性动词：,go to school,be in the school,动作,die,be over,leave,borrow,arrive,begin/start,finish,join,keep,be away,be here,be on(上演）,be in,be dead,buy,have,go to school,be in the school,短暂性动词转换延续性动词：,1.His father _ the Party since 1978.joined.has joined.was in.has been in2.Do you know him well?Sure.We _ friends since ten years ago.were.have been.have become.have made3.How long have you _ here?About two e.arrived,D,B,A,短暂性动词,延续性动词,短暂性动词,延续性动词,短暂性动词,延续性动词,短暂性动词,短暂性动词,短暂性动词,4.Hurry up!The movie _ for ten minutes.has begun.had begun.has been on.began,C,短暂性动词,延续性动词,5.His grandma _ for two years.A died B has been dead C was dead D has died,B,延续性动词,短暂性动词,