英语时态

一般现在时
1.概念:经常、反复发生的动作或行为某种状况。
2.时间状语:always,usually,often,sometimes,every week (day,year,month…),once a week,on Sundays,
3.基本结构:动词 原形 (如主语为第三人称单数,动词上要改为第三人称单数形式)
4.否定形式:am/is/are+not;此时态的谓语动词若为行为动词,则在其前加don't,如主语为第三人称单数,则用doesn't,同时还原行为动词。
5.一般疑问句:把be动词放于句首;用助动词do提问,如主语为第三人称单数,则用does,同时,还原行为动词。
6.例句:.
It seldom snows here.
  He is always ready to help others.
  Action speaks louder than words.


现在进行时
1.概念:表示现阶段或说话时正在进行的动作及行为。
2.时间状语:now,at this time,days,etc. look . listen
3.基本结构:be+doing
4.否定形式:be+not+doing.
5.一般疑问句:把be动词放于句首。
6.例句:How are you feeling today?
He is doing well in his lessons.




完成进行时
1.概念:表示从过去某一时间开始一直延续到的动作。这一动作可能刚刚开始,也可能仍在继续,并可能延续到将来。
2.基本结构:have/has +been+doing
3.时间状语:since+时间点,for+时间段等。
4.例子:I have been sitting here for an hour.
The chirdren have been watching TV since six o'clock.


一般过去时
1.概念:过去某个时间里发生的动作或状态;过去习惯性、经常性的动作、行为。
2.时间状语:ago,yesterday,the day before yesterday,last week,last(year,night,month…),in 1989,just now,at the age of 5,one day,long long ago,once upon a time,etc.
3.基本结构:be动词;行为动词的过去式
4.否定形式:was/were+not;在行为动词前加didn't,同时还原行为动词。
5.一般疑问句:was或were放于句首;用助动词do的过去式did 提问,同时还原行为动词。
6.例句:She often came to help us in those days.
I didn't know you were so busy.
过去进行时
1.概念:表示过去某段时间或某一时刻正在发生或进行的行为或动作。
2.时间状语:at this time yesterday,at that time或以when引导的谓语动词是一般过去时的时间状语等。
3.基本结构 s+was/were+doing
4.否定形式:s+was/were + not + doing.
5.一般疑问句:把was或were放于句首。(第一个字母大写)
6.例句:At that time she was working in a PLA unit.
When he came in,I was reading a newspaper.


过去完成时
1.概念:以过去某个时间为标准,在此以前发生的动作或行为,或在过去某动作之前完成的行为,即“过去的过去”。
2.时间状语:before,by the end of last year(term,month…),etc.
3.基本结构:had + done.
  基本结构:主语+had+过去分词(done)
  ①肯定句:主语+had+过去分词+其他
  ②否定句:主语+had+not+过去分词+其他
  ③一般疑问句:Had+主语+过去分词+其他
  ④特殊疑问句:特殊疑问词+一般疑问句
4.否定形式:had + not + done.
5.一般疑问句:had放于句首。
6.例句:As soon as we got to the station,the train had left.
By the end of last month. We had reviewed four books


一般将来时
1.概念:表示将要发生的动作或存在的状态及打算、计划或准备做某事。
2.时间状语:tomorrow,next day(week,month,year…),soon,in a few minutes,by…,the day after tomorrow,etc.
3.基本结构:主语+am/is/are+going to + do;will/shall + do.
4.否定形式:am/is/are not going to do ;will/shall not do。
5.一般疑问句:be放于句首;will/shall提到句首。
6.例句:They are going to have a competition with us in studies.
It is going to rain.
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