Question

英语时态

Answer 1

一般现在时的用法：
1.表示经常性或习惯性的动作，状态或性能。
Dad takes a walk after supper with mother every day.
She understands several foreign languages.
2.表示计划和安排好的将来动作，此用法多用于come,go ,arrive,leave.start,begin,return等表示位移的动词。
When does your train leave?
3,在油when,after,if,as soon as,unless,as long as,until等引导的时间或条件状语从句中应用一般现在时代替一般将来时。
If it snows tomorrow,we will stay at home.
4.在here,there引导的句子中，一般现在时表示现在正在发生的动作。
Look,There comes your teacher.
5.表示普遍真理或客观真理。
The earth travels around the sun.
6.连系动词look , feel ,smell.taste及表示心里活动的动词want,like,prefer,have等应用一般现在时代替现在进行时。
We want to visit The Great Wall.
7.常和一般现在时连用的时间状语有：usually,often,always,every day,sometimes,seldom,never,hardly,ever,等

现在进行时的用法
1.表示此刻正在做的动作或发生的事。
He is eating now.
2.表示一段时间内连续进行的动作或存在的状态，说话时未必正在进行。
I am studying the computer this term.
3.动词go,come start ,begin ,move,win,leave,stay,play,return等可用现在进行时表示即将发生的事。
Next Sunday many people are coming to my birthday party.
4.在时间和条件状语从句中表示即将发生的动作，代替一般将来时。
Remember not to mention it when you are talking with them.
5.现在进行时和always,all the time,forever,constantly等连用时表示感叹，厌恶，遗憾或惊讶等感情色彩。
Maria is so careless that she is constantly leaving her things here and there.
6连系动词become,turn,get,go等常用现在进行时表示由一种状态转入另一种状态的渐进过程。
Autumn is coming ,it is getting colder and colder
7.常和现在进行时连用的时间状语有：now,nowadays,these days.at present,at the moment等
Nowadays this product is being used everywhere.

一般将来时的用法
1.一般将来时表示将要发生的事，形式为：will/shall+动词原形
Some experts say that the popuiation of the world will reach 9000000000.
2. 一般将来时还可用于下面几种情况：
（1）表示个人看法，常用于I think·····wil·····，
I think he will come on time.
(2)表示提出请求，即常用Will you please·····?其中也可用would代替will，表达更委婉的语气。
Will/Would you please type this file for me?
(3)表示作出允诺
I won't tell anybody about that.
3.将来时的其他表达方式
（1）be going to do表示打算做某事或表示根据现有迹象表明将会发生的事
Betty is going to learn French at night school this evening.
(2)be to do 表示计划，打算，安排即将发生某事及表示该做或不该做的事情，它也可用来表示不可避免将要发生的事情，必将发生的事情。
She is to be seen in the lab on Monday.
You are to go to bed and keep quiet.
(3)be about to do表示即将发生的动作，一般不跟表示将来的时间状语，有时和when链接的并列句连用，表示“正要·····就在这时·········”。
I was about to leave my house when the telephone rang.
The meeting is about to start.
4.常用时间状语有：tomorrow,next year,in2020,the day after tomorrow,in the 2050s等

一般过去时的用法：
1.表示发生在过去，与现在没有联系的动作或状态。
My uncle mended my mother’s washing machine last Sunday afternoon.
2.表示过去经常或反复发生的动作或存在的状态。
When I lived in the countryside ,I swam in the river with my friends on Sundays.
3.在时间，条件，让步等状语从句中表示“过去的将来”
She said she would let me know before she left.
They planned to go outing if it was fine the next day.
4.used to do 或would do表示过去经常或反复发生的动作。
I used to leave for work at 7:30.
5.表示过去发生的一连串动作。
The monkey jumped off the tree,picked up a big stone and threw it at us.
6.在虚拟语气中表示现在或将来的情况，常和could,would,等连用。
If I had time,I would go and visit you.
7.和一般过去时连用的时间状语有：two weeks ago,yesterday,last week,the other day,in 2000,等。

过去进行时的用法：
1.表示过去某一时刻或某一时间段内正在进行的动作。
We are talking about you at this time yesterday.
2.表示位移的动词：如go,come .move,start,stay,leave,等可以表示过去将来的动作。
I wondered whether she was coming the next day.
3.表示说话人赞叹、厌恶等感情色彩，常和always,constantly,等副词连用。
Our teacher was always thinking of us at that time.
4.描述事情发生的背景。
The sun was shining ,the wind was blowing and a group of soldiers were marching.
5.和过去进行时连用的时间状语有：at that time,at this time yesterday,the whole night,等

现在完成时的用法：
1.动作发生在过去，强调其对现在造成的影响且影响现在依然存在。
They have swept the fioor,
2.从过去某时起一直延续到现在的动作或状态。
He has lived and worked in China for 10 years.
3.迄今为止某动作、状态的结局或总和等。
Have you ever played tennis abroad before.
4.常和现在完成时连用的时间状语有：already,yet.just,ever,never,since.so far,in the past 3 years,
5It is the····time that ·····句型中，that后的从句常用现在完成时。
It is the first time that I have visited China.

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Answer 2