11.10 比較過(guò)去時(shí)與現(xiàn)在完成時(shí)
1）過(guò)去時(shí)表示過(guò)去某時(shí)發(fā)生的動(dòng)作或單純敘述過(guò)去的事情，強(qiáng)調(diào)動(dòng)作；現(xiàn)在完成時(shí)為過(guò)去發(fā)生的，強(qiáng)調(diào)過(guò)去的事情對(duì)現(xiàn)在的影響，強(qiáng)調(diào)的是影響。
2）過(guò)去時(shí)常與具體的時(shí)間狀語(yǔ)連用，而現(xiàn)在完成時(shí)通常與模糊的時(shí)間狀語(yǔ)連用，或無(wú)時(shí)間狀語(yǔ)。
一般過(guò)去時(shí)的時(shí)間狀語(yǔ):
yesterday, last week，…ago, in1980, in October, just now, 具體的時(shí)間狀語(yǔ)
共同的時(shí)間狀語(yǔ):
this morning, tonight,this April, now, once，before, already, recently，lately
現(xiàn)在完成時(shí)的時(shí)間狀語(yǔ)
for, since, so far, ever, never, just, yet, till / until, up to now, in past years, always,
不確定的時(shí)間狀語(yǔ)
3）現(xiàn)在完成時(shí)可表示持續(xù)到現(xiàn)在的動(dòng)作或狀態(tài)，動(dòng)詞一般是延續(xù)性的，如live, teach, learn, work, study, know.
過(guò)去時(shí)常用的非持續(xù)性動(dòng)詞有come, go, leave, start, die, finish, become, get married等。
舉例：
I saw this film yesterday.
?。◤?qiáng)調(diào)看的動(dòng)作發(fā)生過(guò)了。）
I have seen this film.
（強(qiáng)調(diào)對(duì)現(xiàn)在的影響，電影的內(nèi)容已經(jīng)知道了。）
Why did you get up so early?
?。◤?qiáng)調(diào)起床的動(dòng)作已發(fā)生過(guò)了。）
Who hasn't handed in his paper?
?。◤?qiáng)調(diào)有卷子，可能為不公平競(jìng)爭(zhēng)。）
She has returned from Paris.
她已從巴黎回來(lái)了。
She returned yesterday.
她是昨天回來(lái)了。
He has been in the League for three years.
(在團(tuán)內(nèi)的狀態(tài)可延續(xù))
He has been a League member for three years.
(是團(tuán)員的狀態(tài)可持續(xù))
He joined the League three years ago.
( 三年前入團(tuán)，joined為短暫行為。)
I have finished my homework now.
---Will somebody go and get Dr. White?
---He's already been sent for.
句子中如有過(guò)去時(shí)的時(shí)間副詞（如 yesterday, last, week, in 1960）時(shí)，不能使用現(xiàn)在完成時(shí)，要用過(guò)去時(shí)。
（錯(cuò)）Tom has written a letter to his parents last night.
（對(duì)）Tom wrote a letter to his parents last night.
11.11 用于現(xiàn)在完成時(shí)的句型
1）It is the first / second time…. that…結(jié)構(gòu)中的從句部分，用現(xiàn)在完成時(shí)。
It is the first time that I have visited the city.
It was the third time that the boy had been late.
2）This is the… that…結(jié)構(gòu)，that 從句要用現(xiàn)在完成時(shí).
This is the best film that I've (ever) seen.
這是我看過(guò)的的電影。
This is the first time (that) I've heard him sing. 這是我第一次聽他唱歌。
典型例題
(1) ---Do you know our town at all?
---No, this is the first time I ___ here.
A. was B. have been C. came D. am coming
答案B. This is the first time 后面所加從句應(yīng)為現(xiàn)在完成時(shí)，故選B。
(2) ---Have you ____ been to our town before?
---No, it's the first time I ___ here.
A. even, come B. even, have come C. ever, come D. ever, have come
答案D. ever意為曾經(jīng)或無(wú)論何時(shí)，反意詞為never，此兩詞常用于完成時(shí)。 This is the largest fish I have ever seen. It is / was the first time +that-clause 的句型中，從句要用完成時(shí)。
注意：非延續(xù)性動(dòng)詞的否定形式可以與表示延續(xù)時(shí)間的狀語(yǔ)連用。即動(dòng)作不發(fā)生的狀態(tài)是可以持續(xù)的。
（錯(cuò)）I have received his letter for a month.
（對(duì)）I haven't received his letter for almost a month.
小升初英語(yǔ)語(yǔ)法復(fù)習(xí)－動(dòng)詞時(shí)態(tài)2
發(fā)表時(shí)間：2009-1-22 17:13:25 點(diǎn)擊次數(shù)：24096次 來(lái)源：轉(zhuǎn)載
11.12 比較since和for
Since 用來(lái)說(shuō)明動(dòng)作起始時(shí)間，for用來(lái)說(shuō)明動(dòng)作延續(xù)時(shí)間長(zhǎng)度。
I have lived here for more than twenty years.
I have lived here since I was born..
My aunt has worked in a clinic since 1949.
Some new oilfields have been opened up since 1976.
I have known Xiao Li since she was a little girl.
My brother has been in the Youth League for two years.
I have not heard from my uncle for a long time.
注意：并非有for 作為時(shí)間狀語(yǔ)的句子都用現(xiàn)在完成時(shí)。
I worked here for more than twenty years.
(我現(xiàn)在已不在這里工作。)
I have worked here for many years.
(現(xiàn)在我仍在這里工作。)
小竅門： 當(dāng)現(xiàn)在完成時(shí)+一段時(shí)間，這一結(jié)構(gòu)中，我們用下面的公式轉(zhuǎn)化，很容易就能排除非延續(xù)動(dòng)詞在完成時(shí)中的誤使。
1) (對(duì)) Tom has studied Russian for three years.
= Tom began to study Russian three years ago, and is still studying it now.
2) (錯(cuò)) Harry has got married for six years.
= Harry began to get married six years ago, and is still getting married now.
顯然，第二句不對(duì)，它應(yīng)改為 Harry got married six years ago. 或 Harry has been married for six years.
11.13 since的四種用法
1) since +過(guò)去一個(gè)時(shí)間點(diǎn) (如具體的年、月、日期、鐘點(diǎn)、1980, last month, half past six)。
I have been here since 1989.
2) since +一段時(shí)間+ ago
I have been here since five months ago.
3) since +從句
Great changes have taken place since you left.
Considerable time has elapsed since we have been here.
4) It is +一段時(shí)間+ since從句
It is two years since I became a postgraduate student.
11.14 延續(xù)動(dòng)詞與瞬間動(dòng)詞
1) 用于完成時(shí)的區(qū)別
延續(xù)動(dòng)詞表示經(jīng)驗(yàn)、經(jīng)歷； 瞬間動(dòng)詞表示行為的結(jié) 果，不能與表示段的時(shí)間狀語(yǔ)連用。
He has completed the work. 他已完成了那項(xiàng)工作。 (表結(jié)果)
I've known him since then. 我從那時(shí)起就認(rèn)識(shí)他了。(表經(jīng)歷)
2) 用于till / until從句的差異
延續(xù)動(dòng)詞用于肯定句，表示"做……直到……" 瞬間動(dòng)詞用于否定句，表示"到……，才……"
He didn't come back until ten o'clock.
他到10 點(diǎn)才回來(lái)。
He slept until ten o'clock.
他一直睡到10點(diǎn)。
典型例題
1. You don't need to describe her. I ___ her several times.
A. had met B. have met C. met D. meet
答案B. 首先本題后句強(qiáng)調(diào)對(duì)現(xiàn)在的影響，我知道她的模樣，你不用描述。再次，several times告知為反復(fù)發(fā)生的動(dòng)作，因此用現(xiàn)在完成時(shí)。
2.---I'm sorry to keep you waiting.
---Oh, not at all. I ___ here only a few minutes.
A. have been B. had been C. was D. will be
答案A. 等待的動(dòng)作由過(guò)去開始，持續(xù)到現(xiàn)在，應(yīng)用現(xiàn)在完成時(shí)。
11.15 過(guò)去完成時(shí)
1） 概念：表示過(guò)去的過(guò)去
----|-------|-----|---->其構(gòu)成是had +過(guò)去分詞構(gòu)成。
那時(shí)以前 那時(shí) 現(xiàn)在
2） 用法
a. 在told, said, knew, heard, thought等動(dòng)詞后的賓語(yǔ)從句。
She said (that) she had never been to Paris.
b. 狀語(yǔ)從句
在過(guò)去不同時(shí)間發(fā)生的兩個(gè)動(dòng)作中，發(fā)生在先，用過(guò)去完成時(shí)；發(fā)生在后，用一般過(guò)去時(shí)。
When the police arrived, the thieves had run away.
c. 表示意向的動(dòng)詞，如hope, wish, expect, think, intend, mean, suppose等，用過(guò)去完成時(shí)表示"原本…，未能…"
We had hoped that you would come, but you didn't.
3) 過(guò)去完成時(shí)的時(shí)間狀語(yǔ)before, by, until , when, after, once, as soon as。
He said that he had learned some English before.
By the time he was twelve, Edison had began to make a living by himself.
Tom was disappointed that most of the guests had left when he arrived at the party.
典型例題
The students ___ busily when Miss Brown went to get a book she ___ in the office.
A. had written, left B，were writing, has left C. had written, had left D. were writing, had left
答案D. "把書忘在辦公室"發(fā)生在"去取書"這一過(guò)去的動(dòng)作之前，因此"忘了書"這一動(dòng)作發(fā)生在過(guò)去的過(guò)去，用過(guò)去完成時(shí)。句中when表示的是時(shí)間的一點(diǎn)，表示在"同學(xué)們正忙于……"這一背景下，when所引導(dǎo)的動(dòng)作發(fā)生。因此
前一句應(yīng)用過(guò)去進(jìn)行時(shí)。
注意： had no … when 還沒等…… 就……
had no sooner… than 剛…… 就……
He had no sooner bought the car than he sold it.
11.16 用一般過(guò)去時(shí)代替完成時(shí)
1) 兩個(gè)動(dòng)作如按順序發(fā)生，又不強(qiáng)調(diào)先后，或用then，and，but 等連詞時(shí)，多用一般過(guò)去時(shí)。
When she saw the mouse，she screamed.
My aunt gave me a hat and I lost it.
2 ) 兩個(gè)動(dòng)作相繼發(fā)生，可用一般過(guò)去時(shí)；如第一個(gè)動(dòng)作需要若干時(shí)間完成，用過(guò)去完成時(shí)。
When I heard the news, I was very excited.
3) 敘述歷史事實(shí)，可不用過(guò)去完成時(shí)，而只用一般過(guò)去時(shí)。
Our teacher told us that Columbus discovered America in 1492.
11.17 將來(lái)完成時(shí)
1) 構(gòu)成will / be going to do sth.
2) 概念
a. 狀態(tài)完成：表示某事繼續(xù)到將來(lái)某一時(shí)為止一直有的狀態(tài)。
b. 動(dòng)作完成：表示將來(lái)某一時(shí)或另一個(gè)將來(lái)的動(dòng)作之前，已經(jīng)完成的動(dòng)作或一獲得的經(jīng)驗(yàn)。
They will have been married for 20 years by then.
You will have reached Shanghai by this time tomorrow.
11.18 現(xiàn)在進(jìn)行時(shí)
現(xiàn)在進(jìn)行時(shí)的基本用法：
a. 表示現(xiàn)在( 指說(shuō)話人說(shuō)話時(shí)) 正在發(fā)生的事情。
We are waiting for you.
b. 習(xí)慣進(jìn)行：表示長(zhǎng)期的或重復(fù)性的動(dòng)作，說(shuō)話時(shí)動(dòng)作未必正在進(jìn)行。
Mr. Green is writing another novel.
(說(shuō)話時(shí)并未在寫，只處于寫作的狀態(tài)。)
She is learning piano under Mr. Smith.
c. 表示漸變的動(dòng)詞有：get, grow, become, turn, run, go, begin等。
The leaves are turning red.
1）過(guò)去時(shí)表示過(guò)去某時(shí)發(fā)生的動(dòng)作或單純敘述過(guò)去的事情，強(qiáng)調(diào)動(dòng)作；現(xiàn)在完成時(shí)為過(guò)去發(fā)生的，強(qiáng)調(diào)過(guò)去的事情對(duì)現(xiàn)在的影響，強(qiáng)調(diào)的是影響。
2）過(guò)去時(shí)常與具體的時(shí)間狀語(yǔ)連用，而現(xiàn)在完成時(shí)通常與模糊的時(shí)間狀語(yǔ)連用，或無(wú)時(shí)間狀語(yǔ)。
一般過(guò)去時(shí)的時(shí)間狀語(yǔ):
yesterday, last week，…ago, in1980, in October, just now, 具體的時(shí)間狀語(yǔ)
共同的時(shí)間狀語(yǔ):
this morning, tonight,this April, now, once，before, already, recently，lately
現(xiàn)在完成時(shí)的時(shí)間狀語(yǔ)
for, since, so far, ever, never, just, yet, till / until, up to now, in past years, always,
不確定的時(shí)間狀語(yǔ)
3）現(xiàn)在完成時(shí)可表示持續(xù)到現(xiàn)在的動(dòng)作或狀態(tài)，動(dòng)詞一般是延續(xù)性的，如live, teach, learn, work, study, know.
過(guò)去時(shí)常用的非持續(xù)性動(dòng)詞有come, go, leave, start, die, finish, become, get married等。
舉例：
I saw this film yesterday.
?。◤?qiáng)調(diào)看的動(dòng)作發(fā)生過(guò)了。）
I have seen this film.
（強(qiáng)調(diào)對(duì)現(xiàn)在的影響，電影的內(nèi)容已經(jīng)知道了。）
Why did you get up so early?
?。◤?qiáng)調(diào)起床的動(dòng)作已發(fā)生過(guò)了。）
Who hasn't handed in his paper?
?。◤?qiáng)調(diào)有卷子，可能為不公平競(jìng)爭(zhēng)。）
She has returned from Paris.
她已從巴黎回來(lái)了。
She returned yesterday.
她是昨天回來(lái)了。
He has been in the League for three years.
(在團(tuán)內(nèi)的狀態(tài)可延續(xù))
He has been a League member for three years.
(是團(tuán)員的狀態(tài)可持續(xù))
He joined the League three years ago.
( 三年前入團(tuán)，joined為短暫行為。)
I have finished my homework now.
---Will somebody go and get Dr. White?
---He's already been sent for.
句子中如有過(guò)去時(shí)的時(shí)間副詞（如 yesterday, last, week, in 1960）時(shí)，不能使用現(xiàn)在完成時(shí)，要用過(guò)去時(shí)。
（錯(cuò)）Tom has written a letter to his parents last night.
（對(duì)）Tom wrote a letter to his parents last night.
11.11 用于現(xiàn)在完成時(shí)的句型
1）It is the first / second time…. that…結(jié)構(gòu)中的從句部分，用現(xiàn)在完成時(shí)。
It is the first time that I have visited the city.
It was the third time that the boy had been late.
2）This is the… that…結(jié)構(gòu)，that 從句要用現(xiàn)在完成時(shí).
This is the best film that I've (ever) seen.
這是我看過(guò)的的電影。
This is the first time (that) I've heard him sing. 這是我第一次聽他唱歌。
典型例題
(1) ---Do you know our town at all?
---No, this is the first time I ___ here.
A. was B. have been C. came D. am coming
答案B. This is the first time 后面所加從句應(yīng)為現(xiàn)在完成時(shí)，故選B。
(2) ---Have you ____ been to our town before?
---No, it's the first time I ___ here.
A. even, come B. even, have come C. ever, come D. ever, have come
答案D. ever意為曾經(jīng)或無(wú)論何時(shí)，反意詞為never，此兩詞常用于完成時(shí)。 This is the largest fish I have ever seen. It is / was the first time +that-clause 的句型中，從句要用完成時(shí)。
注意：非延續(xù)性動(dòng)詞的否定形式可以與表示延續(xù)時(shí)間的狀語(yǔ)連用。即動(dòng)作不發(fā)生的狀態(tài)是可以持續(xù)的。
（錯(cuò)）I have received his letter for a month.
（對(duì)）I haven't received his letter for almost a month.
小升初英語(yǔ)語(yǔ)法復(fù)習(xí)－動(dòng)詞時(shí)態(tài)2
發(fā)表時(shí)間：2009-1-22 17:13:25 點(diǎn)擊次數(shù)：24096次 來(lái)源：轉(zhuǎn)載
11.12 比較since和for
Since 用來(lái)說(shuō)明動(dòng)作起始時(shí)間，for用來(lái)說(shuō)明動(dòng)作延續(xù)時(shí)間長(zhǎng)度。
I have lived here for more than twenty years.
I have lived here since I was born..
My aunt has worked in a clinic since 1949.
Some new oilfields have been opened up since 1976.
I have known Xiao Li since she was a little girl.
My brother has been in the Youth League for two years.
I have not heard from my uncle for a long time.
注意：并非有for 作為時(shí)間狀語(yǔ)的句子都用現(xiàn)在完成時(shí)。
I worked here for more than twenty years.
(我現(xiàn)在已不在這里工作。)
I have worked here for many years.
(現(xiàn)在我仍在這里工作。)
小竅門： 當(dāng)現(xiàn)在完成時(shí)+一段時(shí)間，這一結(jié)構(gòu)中，我們用下面的公式轉(zhuǎn)化，很容易就能排除非延續(xù)動(dòng)詞在完成時(shí)中的誤使。
1) (對(duì)) Tom has studied Russian for three years.
= Tom began to study Russian three years ago, and is still studying it now.
2) (錯(cuò)) Harry has got married for six years.
= Harry began to get married six years ago, and is still getting married now.
顯然，第二句不對(duì)，它應(yīng)改為 Harry got married six years ago. 或 Harry has been married for six years.
11.13 since的四種用法
1) since +過(guò)去一個(gè)時(shí)間點(diǎn) (如具體的年、月、日期、鐘點(diǎn)、1980, last month, half past six)。
I have been here since 1989.
2) since +一段時(shí)間+ ago
I have been here since five months ago.
3) since +從句
Great changes have taken place since you left.
Considerable time has elapsed since we have been here.
4) It is +一段時(shí)間+ since從句
It is two years since I became a postgraduate student.
11.14 延續(xù)動(dòng)詞與瞬間動(dòng)詞
1) 用于完成時(shí)的區(qū)別
延續(xù)動(dòng)詞表示經(jīng)驗(yàn)、經(jīng)歷； 瞬間動(dòng)詞表示行為的結(jié) 果，不能與表示段的時(shí)間狀語(yǔ)連用。
He has completed the work. 他已完成了那項(xiàng)工作。 (表結(jié)果)
I've known him since then. 我從那時(shí)起就認(rèn)識(shí)他了。(表經(jīng)歷)
2) 用于till / until從句的差異
延續(xù)動(dòng)詞用于肯定句，表示"做……直到……" 瞬間動(dòng)詞用于否定句，表示"到……，才……"
He didn't come back until ten o'clock.
他到10 點(diǎn)才回來(lái)。
He slept until ten o'clock.
他一直睡到10點(diǎn)。
典型例題
1. You don't need to describe her. I ___ her several times.
A. had met B. have met C. met D. meet
答案B. 首先本題后句強(qiáng)調(diào)對(duì)現(xiàn)在的影響，我知道她的模樣，你不用描述。再次，several times告知為反復(fù)發(fā)生的動(dòng)作，因此用現(xiàn)在完成時(shí)。
2.---I'm sorry to keep you waiting.
---Oh, not at all. I ___ here only a few minutes.
A. have been B. had been C. was D. will be
答案A. 等待的動(dòng)作由過(guò)去開始，持續(xù)到現(xiàn)在，應(yīng)用現(xiàn)在完成時(shí)。
11.15 過(guò)去完成時(shí)
1） 概念：表示過(guò)去的過(guò)去
----|-------|-----|---->其構(gòu)成是had +過(guò)去分詞構(gòu)成。
那時(shí)以前 那時(shí) 現(xiàn)在
2） 用法
a. 在told, said, knew, heard, thought等動(dòng)詞后的賓語(yǔ)從句。
She said (that) she had never been to Paris.
b. 狀語(yǔ)從句
在過(guò)去不同時(shí)間發(fā)生的兩個(gè)動(dòng)作中，發(fā)生在先，用過(guò)去完成時(shí)；發(fā)生在后，用一般過(guò)去時(shí)。
When the police arrived, the thieves had run away.
c. 表示意向的動(dòng)詞，如hope, wish, expect, think, intend, mean, suppose等，用過(guò)去完成時(shí)表示"原本…，未能…"
We had hoped that you would come, but you didn't.
3) 過(guò)去完成時(shí)的時(shí)間狀語(yǔ)before, by, until , when, after, once, as soon as。
He said that he had learned some English before.
By the time he was twelve, Edison had began to make a living by himself.
Tom was disappointed that most of the guests had left when he arrived at the party.
典型例題
The students ___ busily when Miss Brown went to get a book she ___ in the office.
A. had written, left B，were writing, has left C. had written, had left D. were writing, had left
答案D. "把書忘在辦公室"發(fā)生在"去取書"這一過(guò)去的動(dòng)作之前，因此"忘了書"這一動(dòng)作發(fā)生在過(guò)去的過(guò)去，用過(guò)去完成時(shí)。句中when表示的是時(shí)間的一點(diǎn)，表示在"同學(xué)們正忙于……"這一背景下，when所引導(dǎo)的動(dòng)作發(fā)生。因此
前一句應(yīng)用過(guò)去進(jìn)行時(shí)。
注意： had no … when 還沒等…… 就……
had no sooner… than 剛…… 就……
He had no sooner bought the car than he sold it.
11.16 用一般過(guò)去時(shí)代替完成時(shí)
1) 兩個(gè)動(dòng)作如按順序發(fā)生，又不強(qiáng)調(diào)先后，或用then，and，but 等連詞時(shí)，多用一般過(guò)去時(shí)。
When she saw the mouse，she screamed.
My aunt gave me a hat and I lost it.
2 ) 兩個(gè)動(dòng)作相繼發(fā)生，可用一般過(guò)去時(shí)；如第一個(gè)動(dòng)作需要若干時(shí)間完成，用過(guò)去完成時(shí)。
When I heard the news, I was very excited.
3) 敘述歷史事實(shí)，可不用過(guò)去完成時(shí)，而只用一般過(guò)去時(shí)。
Our teacher told us that Columbus discovered America in 1492.
11.17 將來(lái)完成時(shí)
1) 構(gòu)成will / be going to do sth.
2) 概念
a. 狀態(tài)完成：表示某事繼續(xù)到將來(lái)某一時(shí)為止一直有的狀態(tài)。
b. 動(dòng)作完成：表示將來(lái)某一時(shí)或另一個(gè)將來(lái)的動(dòng)作之前，已經(jīng)完成的動(dòng)作或一獲得的經(jīng)驗(yàn)。
They will have been married for 20 years by then.
You will have reached Shanghai by this time tomorrow.
11.18 現(xiàn)在進(jìn)行時(shí)
現(xiàn)在進(jìn)行時(shí)的基本用法：
a. 表示現(xiàn)在( 指說(shuō)話人說(shuō)話時(shí)) 正在發(fā)生的事情。
We are waiting for you.
b. 習(xí)慣進(jìn)行：表示長(zhǎng)期的或重復(fù)性的動(dòng)作，說(shuō)話時(shí)動(dòng)作未必正在進(jìn)行。
Mr. Green is writing another novel.
(說(shuō)話時(shí)并未在寫，只處于寫作的狀態(tài)。)
She is learning piano under Mr. Smith.
c. 表示漸變的動(dòng)詞有：get, grow, become, turn, run, go, begin等。
The leaves are turning red.