现在完成时(完整版)

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一般将来时 4.They held a sports meeting last week. 一般过去时 5.Are you doing your homework ? 现在进行时
已学习过的时态
名称 时间 一般现在时 平时,经常
现在进行时 正在进行
动词形式 1.v原形 2. v三单
am/is/are+v-ing
2.转换成be+名词
join the army
join the Party go to school
be a soldier be a Party member be a student
3转换成be+形容词或副词 die leave close be dead finish be over begin
注:瞬间动词在完成时态的否定式中可以接一段时间 She hasn’t come here for an hour. 她来这儿还没有一个小时。
常用的瞬间动词有:
come ,go, die, become begin, borrow, join, buy arrive, finish, return, leave, open, close
注:对for或since引导的时间状语 提问,必须用how long, 不能用 when.
I have been in Fuzhou for two months. →How long have you been in Fuzhou?
Linda has studied Chinese since 5 years ago. →How long has Linda studied Chinese ?
一、现在完成时的构成
have/has+动词的过去分词(done)
二、基本句式构成
1.肯定句: 主语+have/has+过去分词+其他。 I have seen the film. 2.否定句: 主语+have/has+not +过去分词+其他。 I haven't seen the film. 3.一般疑问句 Have/has+ 主语+过去分词+其他? Yes, 主语+have/has. / No, 主语+have/hasn’t. Have you seen the film? Yes, I have. / No, I haven't.
练习:用for 或since 填空
1. 2. 3. 4. ______ two years ______ two years ago ______ last month _______1999
5. It’s five years _______ we met last time.
6. We haven’t seen each other ____ a long time.
巧记10个瞬间性动词的转换 “开始离去借来还,出生入死买到家”
1 begin 2 leave 3 go be on be away from be off 6 return 7 join 8 die 9 buy 10 arrive be back be in be dead have be here
3)ABC型(三种都不一样) fly-flew-flown break-broke-broken take-took-taken write-wrote-written
4)ABA型(原形与过去分词相同) run-ran-run come-came-come become-became-become
另外,还可用其它表示方法,但只适用于部 分瞬间动词。具体办法是将瞬间动词转化为表延 续的动词或者表状态的be+名词/形容词或副词/ 介词短语等。 1.直接转化成延续性动词 buy borrow have catch (get) a cold have a cold be
keep come/go /become
1.will/shall+v原形 一般将来时 即将,计划 1.will/shall+v 原形 2.be going to going +v原形 to +v原 2.am/is/are 形 1.v-ed (规则动词) 一般过去时 过去(与现 1.v-ed (规则动词) 在无关) 不规则动词 2.2. 不规则动词 过去进行时 过去某一时 was/were+v-ing was/were+v-ing 间,在进行
.
2. since+
(1) 过去的时间点 (2) 时间段+ago (3) 从句 (一般过去时)
Linda has studied Chinese since 2007.
Linda has studied Chinese since 5 years ago. Linda has studied Chinese since she was 4 years old.
判断正误:
1.我买了这台电脑五年了。 I have bought this watch for five years. I have had this watch for five years/since 5 years ago.
7. Jerry has worked here __ he came to China.
五、延续性动词和非延续性动词
动词分为延续性动词和短暂性动词, 延续性动词可以和表一段时间的时间状语连用,非延续性 动词则不行。 非延动词又叫瞬间动词或短暂性动词词,它可以有现在完 成时态,但不可以和表一段时间的时间状语连用;如果要 接一段时间,就必须把它转换成相应的延续性动词。
We have had the book for three years. We bought the book three years ago.
②他感冒三天了. He has had a cold for three days.
He caught a cold three days ago.
③自从上星期以来,我就借了这本书.
(从3年前开始,持续到现在还在学) He has lived in Fuzhou since 2006.
(2006年开始住在福州,持续到现 在还在福州。)
注:此种用法中表示持续 动作或状态的动词必须是 延续性动词(否定句除外)
forቤተ መጻሕፍቲ ባይዱ和since的用法
1. for+时间段
He has studied English for 3 years
⑦我们上了8年学了。
We have been students for eight years.
⑧下课10分钟了
The class has been over for ten minutes. 9.电影开始了一小时了 The film has been on for an hour.
练习:
1.He died 10 years ago. — He ____ for 10 years / since 10 years ago. 2. He borrowed the book 2 weeks ago. —He _____the book for 2 weeks. 3. He bought the motorbike a month ago. —He _____the motorbike for a month. 4. He arrived here three days ago. — He_____here since three days ago. 5. The film began 30 minutes ago. — The film ____ for 30 minutes.
⑤ Mr Black死了三年了。
Mr Black has been dead for three years. Mr Black died three years ago.
⑥小明参军半年了。
Xiao Ming has been a soldier for half a year. Xiao Ming joined the army half a year ago.
练习
改为否定句和一般疑问句并作肯否回答
I have opened the window
三、动词的过去分词
动词的过去分词有规则形式 和不规则形式两种,规则形式 同过去式的规则形式。不规则 形式需特殊记忆,可分为四类: AAA型、ABB型、ABC型和ABA型。
不规则动词原型-过去式-过去分词
1)AAA型(三种形式都一样) cost-cost-cost hit-hit-hit put-put-put set-set-set 2)ABB型(过去式与过去分词相同) buy-bought-bought catch-caught-caught find-found-found stand-stood-stood
I have kept the book since last week. I borrowed the book last week.
④我成为一个学生两年多了.
I have been a student for over two years. I became a student two years ago.
4 borrow keep 5 come be here
类似的转换还有
open --- be open finish--- be over get married---be married catch a cold---have a cold arrive/reach---be in/at
瞬间动词可以用于现在完成时,但不能和表 示一段时间的状语连用。如可说“He has left.”但 不能说“He has left for three years.”
练习
写出下列动词的过去分词
• • • • • • • • • 1.wake ______ 2. sell ________ 3. ride _______ 4. choose ______ 5. think _______ 6. drive ______ 7. bring ______ 8. teach ______ 9. throw ______ 10. pay _____ 11. see ___ 12. eat _____ 13. give _______
四、现在完成时的用法 及其时间状语
1、表示过去已经发生或完成的动作或状态对现
在造成的影响或结果, (汉语中常用“已经”、 “过”、“了”等表达) 常与already, yet , never, ever, just, before等时间状语连用。
They have already left. (他们已经离开了,人不在这里 )
现在完成时
• 现在完成时的构成 • 现在完成时几种基本句式的构成 • 动词的过去分词 • 现在完成时的用法及其时间状语 • 延续性动词与非延续性性动词 • 与一般过去时的用法比较 • have /has been to,have / has gone to,have / has been in的用法区别
I have never heard of him. (我从来没有听说过他。对这个人一无所知)
2、表示过去已经开始,持续 到现在的动作或状态,常与 for+时间段、since+过去的时 间点、so far等连用。

I have learnt English for three years.
我已经学了三年的英语。
be asleep
be open
be on
be away fall sleep
be closed open
4.转换成 be+介词短语
go to school
join the army
be in school
be in the army
一般过去时态和现在完成时态可以构成同义句
①.我们买这本书三年了.
现在完成时
The Present Perfect Tense
判断下列句子的时态
1.She works in a factory. 一般现在时
2.I was doing my homework at this time yesterday. 过去进行时 3.We are going to have a picnic this Sunday.
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