现在完成时讲解

现在完成时
切记用法2的动词 仅限于延续性动词。 常见的非延续性动词（结束性动词） buy ---have borrow --- keep open ---be open close ---be closed leave ---be away die ---be dead join ---be a member begin ---be on
4.他走了10天了。 He has been away for 10 days .
5. 我写完作业了。 I have finished my homework .
6. 我把房间打扫干净了。
I have cleaned my room.
7. 他把衣服洗了。
He has washed his clothes .
时 态
1.现在进行时 S+be ( am, is, are ) + V.-ing 2.过去进行时 S+be ( was , were ) + V.-ing
3.一般将来时
4.一般现在时 5.一般过去时 6.现在完成时
S+will / be going to + V.
S+V, S+Ved S（三单）+V(s)
S+have / has + V(p.p)
现在完成时
一．基本结构： 肯定形式 have/has + done (P.P) 否定形式： have/has + not +done (P.P) 一般疑问句: Have/Has +主语+ done (P.P)
I have finished my homework. I haven’t finished my homework.
现 在 完 成 时（二）
含义：
过去已经开始，持续 到现在的动作或状态
(1)I have worked here for 11 years . (2) You have already studied here for 2 years. (3) He has lived there for 5 years .
8. 我们吃过鱼。 We have eaten fish . 9. 他们来了。
They have come.
10. 她的书还了。 She has returned her book .
Have
been
have been
did -- Last ye百度文库r.
go
3. My father _____ already ____________ (finish) mending myhas bike. finished
been (be) to the teachers’ 4. She has _____ just _____ office. have learned 5. So far we _________________ (learn) more than two thousand words. has happened 6. The picture shows what ___________ (happen) to the forests of the USA in the past 350 years.
1.那本书他借三个星期了。 He has kept the book for 3 weeks . 2.他们来这半天了。 They have been here for half a day . 3.这辆车我已经买了半年了。
I have had the car since half a year ago .
I have borrowed the book .（借了）
She has seen the film .（看过）
They have bought a car .（买了）
We have finished the work .（完成了）
现在完成时： 含义：….. 常与 already ,just 连用。 构成： have (has )+ V.过去分词 应用： 1. I have done my homework . have already ______ done my homework . (do) I _____ I ____________ have done my homework already . have just _______ done my homework . I _______ 2. 否定句 常与 yet ,never 连用 haven’t done my homework yet .(not do) I ______________ He _______ never _______ has seen this film. (see)
1. He has lived there since 1990. 2. I have already done the work since an hour ago . 3. They have worked in the factory since they came.
4.自从2004 年我们就在这学习。 We have studied here since 2004 .
carried worried tried cried
like live move
liked lived moved
现 在 完 成 时（一）
含义：
过去发生的动作对现在造成的影响或结果
I have done my homework .（写作业了）
He has planted trees .(植过树）
Have you finished your homework?
规则动词的过去分词
work visit ask play stay
worked visited asked played stayed
stop drop rob plan prefer
carry worry try cry
stopped dropped robbed planned preferred
5. 自从半年前他就认识我。
He has known me since half a year ago .
6.自从我出生以来我就住这。
I have lived here since I was born .
7. 自从我们来到这就学英语。
We have studied English since we came here .
end /finish ---be over become --- be come/go/arrive /get/reach/move ---be in / at
改错：
(1)I have borrowed kept the book for 2 weeks .
(2) They have bought had the car since 2000.. (3) He has come been here for 5 minutes .
(4) She has left been away
since I came here .
现 在 完 成 时 (三 )
have （has ) been to +某地 have (has ) gone to +某地 去过某地 去了某地
1.Where is Jim ? I can’t find him . He has ______ gone to the school library .
3.一般疑问句 常与 ever 连用 (1) Have you ever done your work ? Yes, I have . No, I haven’t .
(2) Have they ever left ? Yes, they have. No, they haven’t. (3) Has he ever seen the film ? Yes, he has. No, he hasn’t.
2. A: Li Ming ’s house is very big .
B: How do you know that ?
A: I have _______ been to his house .
1. Have _____ you ________ found your bike yet? Yes, I found _____ it under the big tree an hour ago. (find) 2. _____ you ever ______ (be) to Sanya? Never. What about you? I ________________ (be) there twice. When _____ you _____ (go) there for the first time?
7. He ____________________ has not heard (not hear) from his parents recently.
have lived (live) in 8. The Greens _____________ this street since they _____ came (come) to Beijing. have taken (take) place 9. Great changes _________ in the last five years. 10. --Where’s Peter? gone (go) to Changzhou. -- He has _______