一、 一般现在时：
1.概念：经常、反复发生的动作或行为及现在的某种状况。
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. (it doesnot)(dose it或者isnot it?口语)
He is always ready to help others. (he is not )(is he ?)
Action speaks louder than words.
二、 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.
三、 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, these days, etc.
3.基本结构：am/is/are+doing
4.否定形式：am/is/are+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.
四、 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：was/were+doing
4.否定形式：was/were + not + doing.
5.一般疑问句：把was或were放于句首。
6.例句：At that time she was working in a PLA unit.
When he came in, I was reading a newspaper.
五、 现在完成时：
1.概念：过去发生或已经完成的动作对现在造成的影响或结果，或从过去已经开始，持续到现在的动作或状态。
2.时间状语：recently, lately, since…for…,in the past few years, etc.
3.基本结构：have/has + done
4.否定形式：have/has + not +done.
5.一般疑问句：have或has。
6.例句：I've written an article.
The countryside has changed a lot in the past few years.
六、 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.
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
七、 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：am/is/are/going to + do；will/shall + do.
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：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.
八、 过去将来时：
1.概念：立足于过去某一时刻，从过去看将来，常用于宾语从搜趣网句中。
2.时间状语：the next day(morning, year…),the following month(week…),etc.
3.基本结构：was/were/going to + do；would/should + do.
4.否定形式：was/were/not + going to + do;would/should + not + do.
5.一般疑问句：was或were放于句首；would/should 提到句首。
6.例句：He said he would go to Beijing the next day.
I asked who was going there .
九.将来完成时：
1.概念：在将来某一时刻之前开始的动作或状态
2.时间状语：by the time of;by the end of+时间短语（将来）;by the time+从句（将来）
3.基本结构：be going to/will/shall + have done
十.现在完成进行时:
1.概念：在过去某一时刻之前开始的动作或状态一直持续到说话为止
2.基本结构：have/has +been+doing
几种常见时态的相互转换
英语中的几种时态在一定情况下可以互相转换，以下是几种常见的转换形式：
十一、 一般过去时与现在完成时的转换
在现在完成时中，延续性动词能与表示一段时间的状语连用，瞬间动词却不能。但是，可用别的表达方式：①瞬间动词用于“一段时间 + ago”的一般过去时的句型中；②瞬间动词可改成与之相对应的延续性动词及短语，与一段时间连用；③瞬间动词用于“It is + 一段时间 + since + 一般过去时”的句型中，表示“自从……以来有……时间”的意思，主句一般用it is来代替It has been;④瞬间动词用于“Some time has passed since + 一搜趣网般过去时”的句型中。请看：
A. He joined the League two years ago.
B. He has been in the League for two years.
C. It is two years since he joined the League.
D. Two years has passed since he joined the League.
十二、 一般现在时与现在进行时的转换
在一般现在时中，at加上名词表示“处于某种状态”，如at work（在工作）, at school（上学、上课）等。此短语可与进行时态转换。请看：
Peter is at work, but Mike is at play.
Peter is working, but Mike is playing.
十三、 现在进行时与一般将来时的转换
在现在进行时态中go, come, leave, start, arrive等动词常与表示将来的时间状语连用表示将要发生的动作。如：I am coming, Mum! 意为“我就来，妈妈！”请看：
The train is leaving soon.
The train will leave soon.

I usually do my homework at 10 o'clock,but Idid my homework at 11 o'clock. I will do my homework at 10o'clock tomorrow

1 一般现在时
Shanghai lies in the east of China.
Columbus proved that the earth is round.
I leave home for school at 7 every morning.
The earth moves around the sun.
Pride goes before a fall.
2 一般过去时
he was tired after working
he didnnot know anything before i told him
he once lost a book
She often came to help us in those days.
I didn't know you were so busy.
3 一般将来时
Tomorrow will be Sunday.
The rain will stop soon.
Shall we go there at five? ？
Will you please open the door? ？
We're going to meet outside the school gate.
4 一般过去将来时
I didn't know if he would come.
She was sixty-six. In three years，she would be sixty-nine.
She told us that she would not go with us，if it rained.
I didn't know how to do it. What would be their ideas？
I would play with him when was a child.
5 现在进行时
We are waiting for you.
Mr. Green is writing another novel.
She is learning piano under Mr. Smith.
It's getting warmer and warmer.
You are always changing your mind.
6 过去进行时
I was writing yesterday at that time
I was doing homework yesterday.
I was not doing homework yesterday.
Was he running last year?
What were they cleaning just now?
7 将来进行时
I'll be doing homework this time tomorrow.
What will you be doing at 6 tomorrow?
He'll be studying at school next year.
I'll be taking a shower at 9 the day after tomorrow.
Will you be busy working on your report this time tomorrow?
8 过去将来进行时
They said they would be coming.
The new job he would be taking was raising racing horses.
He told me that he would not be going school.
The new teacher who would be teaching us was Miss Song.
I would never be getting the chance.
9 现在完成时
All of my students have made rapid progress in the past few years.
I have lived here since ten years ago.
This is the most interesting news I have ever told.
It was the third time that he had made the same mistake.
Don't get off the car until the car has stopped.
10 过去完成时
As soon as we got to the station, the train had left.
By the end of last month. We had reviewed four books
The thief had stolen my walle I knew it.
I had never been here.
When we reached 搜趣网there,the cinema had closed.
11 将来完成时
By the time we shall have learned this textbook.
Tomorrow morning， I will have cleaned the windows.
Next Sunday， he will have been a new doctor.
They wi搜趣网ll have been married for 20 years by then.
You will have reached Shanghai by this time tomorrow.
够了吧？

一般现在时： I am a boy. i like apples America is very rich.
现在进行时: She is walking on the street; i am doing my homework; He is standing against the wall.
将来时; I will be here soon. It will get colder and colder . He will go to China.
过去时 I broke the window: My mom came back home late yesterday. He was a doctor .
现在完成时www.souquanme.com I have had a meal with my friends. She has just finished her homework. I have run for 1 hours.