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1、Present perfect tense,现在完成时态,8BUnit 2 Grammar 2,用法1：现在完成时态的含义是表示过去发生的或已完成的动作对现在造成的影响或结果。特点是既涉及过去，又联系现在：动作是过去发生的，结果是现在存在的。,Look! The blackboard is so clean now. He has cleaned the blackboard. (他已经擦过黑板了。)这句话所表示的结果是黑板现在是干净的。,用法2：表示动作或状态从过去开始一直延续到现在甚至将来,Mike borrowed the books two days ago.,Mike has kep
2、t the books for two days.,1.We have learnt English_ 3 years. _ 3 years ago._ we _(come)here,for,since,came,_,How long have you learnt English?,5. for + 一段时间 since + 过去的时间点 就画线提问用how long,想一想,since,标志词：for +一段时间, since+过去的时间点, these years, so far, in the past/last years,We _ (learn) English for three
3、 years/ since two years ago/since 2000.Mr. Green _ (be) in China these years.They _(write) 15 songs so far.The population _ (grow) more slowly in the past ten years.,Have learned,has been,have written,has grown,瞬间动作不能于表示一段时间的短语连用，应改用持续性动词。,常见的非延续性动词与延续性动词的转换。,buy have go out be out leave be away beg
4、in/start be oncome/go be in/at borrow keepjoin be a member die be deadcatch a cold have a cold become befall asleep be asleep open be open get to know know close-be closedarrive-be in/at get married-be marriedStopbe over,1.I have borrowed the book for 2 weeks. ( )2.The film has begun for 5 minutes.(
5、 ),kept,been on,1. 这辆自行车我买了两年了。 Ive _ the bike _ two years.,2. He left Nanjing two years ago. He _ _ _ _ Nanjing for two years.,3. The monkey died last month. The monkey _ _ _ for a month.,4. A: Hong long _ you _ ( ) B: Two weeks. A.did,get ill B. have,fallen ill C. were,ill D. have,been ill,练一练：,ha
6、d for,has been away from,has been dead,D,1.She isnt here now because she _ the zoo. A.has been to B. have gone to C. has gone to2.The Greens _ Guilin twice. D.have gone to A.have been to B. have been in C. has been in3.Lily has made lots of friends since she _ here. A. come B. has been C. came D. co
7、ming4.My parents _ in Beijing since 1995. A. are living B. have lived C. lived D. will live5.His grandma _ for 2 years.Was died B. has died C. was dead D. has been dead,C,A,C,B,D,exercise,1.-Have you _ the bike? -Yes ,I _ it 10 minutes ago.(mend)2.-I have _ the film “Titanic”. -When _ you _ it?(see)
8、 3.Im sorry, I havent got any money.Ive_ (leave ) my handbag at home.4.I have _(read) the book.5.Its a long time since we _ (meet) last year.6.Look! The train _ just _. ( come),mended,mended,seen,did,see,left,read,met,has,come,exercise,现在完成时和一般过去时的区别：,现在完成时，强调这一动作产生的结果对现在的影响，与现在有关。 一般过去时，仅仅表示在过去某一时刻
9、曾发生过这一动作，与现在无关。,他已学英语五年了。,He has studied English for five years.,他曾学过五年英语。,He studied English for five years.,（说明他还继续学下去）,（只说明他过去学过五年英语，但现在不学了。）,一般过去时与现在完成时有一些明显的时间状语。,遇到yesterday, Last year, in May, in+过去某一年，two days ago, the other day, just now等就用一般过去时,当有 so far, in the past/ last few days(在过去/最近的几年里)，since接过去时间状语或过去时的句子等常用现在完成时,现在完成时和一般过去时,He _(work) in our school for one year.He _(come) to our school last year/in 2002.They _(cook) the supper already.They _ (cook) the supper half an hour ago.,has worked,came,have cooked,cooked,Bye-bye!,