英语中共有那几种时态,

英语中共有那几种时态,
英语中共有那几种时态,

英语中共有那几种时态,
一般现在时

1) 经常性或习惯性的动作,常与表示频腮度的时间状语连用.
时间状语： every…, sometimes, at…, on Sunday
I leave home for school at 7 every morning.
2) 客观真理,客观存在,科学事实.
The earth moves around the sun.
Shanghai lies in the east of China.
3) 表示格言或警句中.
Pride goes before a fall. 骄者必败.
注意：此用法如果出现在宾语从句中,即使主句是过去时,从句谓语也要用一般现在时.
例：Columbus proved that the earth is round..
4) 现在时刻的状态、能力、性格、个性.
I don't want so much.
Ann Wang writes good English but does not speak well.
比较：Now I put the sugar in the cup.
I am doing my homework now.
第一句用一般现在时,用于操作演示或指导说明的示范性动作,表示言行的瞬间动作.再如：Now watch me, I switch on the current and stand back. 第二句中的now是进行时的标志,表示正在进行的动作的客观状况,所以后句用一般现在时.

一般过去时

1）在确定的过去时间里所发生的动作或存在的状态.
时间状语有：yesterday, last week, an hour ago, the other day, in 1982等.
Where did you go just now?
2）表示在过去一段时间内,经常性或习惯性的动作.
When I was a child, I often played football in the street.
Whenever the Browns went during their visit, they were given a warm welcome.
3）句型：
It is time for sb. to do sth "到……时间了" "该……了"
It is time sb. did sth. "时间已迟了" "早该……了"
It is time for you to go to bed. 你该睡觉了.
It is time you went to bed. 你早该睡觉了.
would (had) rather sb. did sth. 表示'宁愿某人做某事'
I'd rather you came tomorrow.
4) wish, wonder, think, hope 等用过去时,作试探性的询问、请求、建议等.
I thought you might have some. 我以为你想要一些.
比较：
一般过去时表示的动作或状态都已成为过去,现已不复存在.
Christine was an invalid all her life.
(含义：她已不在人间.)
Christine has been an invalid all her life.
(含义：她现在还活着)
Mrs. Darby lived in Kentucky for seven years.
(含义：达比太太已不再住在肯塔基州.)
Mrs. Darby has lived in Kentucky for seven years.
( 含义：现在还住在肯塔基州,有可能指刚离去)

注意： 用过去时表示现在,表示委婉语气.
1）动词want, hope, wonder, think, intend 等.
Did you want anything else?
I wondered if you could help me.
2）情态动词 could, would.
Could you lend me your bike?

一般将来时

1) shall用于第一人称,常被will 所代替.
will 在陈述句中用于各人称,在争求意见时常用于第二人称.
Which paragraph shall I read first.
Will you be at home at seven this evening?
2) be going to +不定式,表示将来.
a. 主语的意图,即将做某事.
What are you going to do tomorrow?
b. 计划,安排要发生的事.
The play is going to be produced next month.
c. 有迹象要发生的事
Look at the dark clouds, there is going to be a storm.
3) be +不定式表将来,按计划或正式安排将发生的事.
We are to discuss the report next Saturday.
4) be about to +不定式,意为马上做某事.
He is about to leave for Beijing.
注意：be about to 不能与tomorrow, next week 等表示明确将来时的时间状语连用.

现在完成时

现在完成时用来表示之前已发生或完成的动作或状 态,其结果的确和现在有联系.动作或状态发生在过去 但它的影响现在还存在；也可表示持续到现在的动作或 状态.其构成： have (has) +过去分词.

过去完成时

1） 概念：表示过去的过去
----|-------|-----|---->其构成是had +过去分词构成.
那时以前 那时 现在
2） 用法
a. 在told, said, knew, heard, thought等动词后的宾语从句.
She said (that) she had never been to Paris.
b. 状语从句
在过去不同时间发生的两个动作中,发生在先,用过去完成时；发生在后,用一般过去时.
When the police arrived, the thieves had run away.
c. 表示意向的动词,如hope, wish, expect, think, intend, mean, suppose等,用过去完成时表示"原本…,未能…"
We had hoped that you would come, but you didn't.
3) 过去完成时的时间状语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.
典型例题
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. "把书忘在办公室"发生在"去取书"这一过去的动作之前,因此"忘了书"这一动作发生在过去的过去,用过去完成时.句中when表示的是时间的一点,表示在"同学们正忙于……"这一背景下,when所引导的动作发生.因此
前一句应用过去进行时.
注意： had no … when 还没等…… 就……
had no sooner… than 刚…… 就……
He had no sooner bought the car than he sold it.

将来完成时

1) 构成will / be going to do sth.
2) 概念
a. 状态完成：表示某事继续到将来某一时为止一直有的状态.
b. 动作完成：表示将来某一时或另一个将来的动作之前,已经完成的动作或一获得的经验.
They will have been married for 20 years by then.
You will have reached Shanghai by this time tomorrow
现在进行时

现在进行时的基本用法：
a. 表示现在( 指说话人说话时) 正在发生的事情.
We are waiting for you.
b. 习惯进行：表示长期的或重复性的动作,说话时动作未必正在进行.
Mr. Green is writing another novel.
(说话时并未在写,只处于写作的状态.)
She is learning piano under Mr. Smith.
c. 表示渐变的动词有：get, grow, become, turn, run, go, begin等.
The leaves are turning red.
It's getting warmer and warmer.
d. 与always, constantly, forever 等词连用,表示反复发生的动作或持续存在的状态,往往带有说话人的主观色彩.
You are always changing your mind.
典型例题
My dictionary ___, I have looked for it everywhere but still___ it.
A. has lost, don't find B. is missing, don't find C. has lost, haven't found D. is missing, haven't found.
答案D. 前句是一个仍在持续的状态,应用进行时,由于没有找到,其影响仍然存在,应用完成时,瞬间动词用于否定式时可用于完成时.

过去进行时

1） 概念：表示过去某时正在进行的状态或动作.
2） 过去进行时的主要用法是描述一件事发生的背景；一个长动作发生的时候,另一个短动作发生.
3) 常用的时间状语
this morning, the whole morning, all day yesterday, from nine to ten last evening, when, while
My brother fell while he was riding his bicycle and hurt himself.
It was raining when they left the station.
When I got to the top of the mountain, the sun was shining.
典型例题
1) Mary ___ a dress when she cut her finger.
A. made B. is making C. was making D. makes
答案C. 割伤手指是已发生的事情,应用过去时.同 时,when表时间的同时性,"玛丽在做衣服时"提供事情发生的背景,因此用过去进行时.
2) As she ___ the newspaper, Granny ___ asleep.
read； was falling B. was reading； fell C. was reading； was falling D. read；fell
答案B.句中的as = when, while,意为"当……之时".描述一件事发生的背景时,用过去进行；一个长动作发生的时候,另一个短动作发生.句意为 "在她看报纸时,奶奶睡着了."句中的 fell (fall的过去时),是系动词,后跟形容词,如：fall sick.

将来进行时

1) 概念：表示将来某时进行的状态或动作,或按预测将来会发生的事情.
She'll be coming soon.
I'll be meeting him sometime in the future.
注意：将来进行时不用于表示"意志",不能说 I'll be having a talk with her.
2）常用的时间状语
Soon, tomorrow, this evening,on Sunday, by this time,tomorrow, in two days, tomorrow evening
By this time tomorrow, I'll be lying on the beach.

时态一致

1) 如果从句所叙述的为真理或不变的事实,则永远用现在时.
At that time, people did not know that the earth moves.
He told me last week that he is eighteen.
2) 宾语从句中的助动词ought, need, must, dare 时态是不变的.
He thought that I need not tell you the truth.

时态与时间状语

时间状语
一般现在时 every …, sometimes, at …, on Sunday,
一般过去时 yesterday, last week, an hour ago, the other day, in 1982, just now
一般将来时 next…, tomorrow, in+时间,
现在完成时 for, since, so far, ever, never, just, yet, till/until, up to now, in past years, always, recently
过去完成时 before, by, until, when, after, once, as soon as
过去进行时 this morning, the whole morning, all day, yesterday, from nine to ten last evening… when, while
将来进行时 soon, tomorrow, this evening, on Sunday, by this time, tomorrow, in two days, tomorrow evening

现在时，过去时，将来时，进行时，完成时

有八大时态
一般现在时：do does
一般过去时：did
一般将来时: will do be going to do
现在进行时: be doing
过去进行时: was/were doing
现在完成时: have/has done
过去完成时: had done
将来完成时; will have done