英语时态都用对了吗
时间：2016-12-02 11:36:29
来源：www.pinghe.com 作者：平和英语村
英语语法中的时态（tense）是一种动词形式，不同的时态用以表示不同的时间与方式。 是表示行为、动作、状态在各种时间条件下的动词形式。
一、一般现在时
1、表示客观真理。
2、人或事物所处状态和习惯性重复发生的动作。
I always swim in the afternoon.It is usually sunny.
He always swims in the afternoon.He feels very relaxed.
要点1: 一般现在时在时间，条件状语从句中代替将来时。
要点2: 表示“出发，到达，开始”的动词可用一般现在时替代将来时，表示即将发生的非个人计划的事。
go, come, leave, arrive, start, begin.
The train leaves at 6:30.
二、现在进行时
1、表示现在正在进行或现阶段正在进行的动作。
I am swimming in the gym with my classmates now.I want to improve my swimming skill.
He is swimming in the gym with his classmates now.He likes swimming very much.
要点: 瞬间动词和进行时连用表将来。
come, go, leave, return, arrive, begin, start
三、一般过去时
1、表示过去时间所发生的动作或所处的状态。
I swam yesterday afternoon.I didn't do my homework.
He swam yesterday afternoon.He had nothing to do at that time.
注意：一般过去时强调和现在的不同。
She was such a nice girl.
四、过去进行时
1、表示过去某一时刻或时间段正在进行的动作。
She asked me if I was swimming in the lake.I said "yes".
He told us on the phone that he was swimming in the lake.And he wanted to continue.
要点：在由when, while, as 引导的时间状语从句中，动作时间长的用过去进行时，动作时间段的用过去时。
灯熄灭的时候我们正在吃晚餐。
We were having supper when the light went out.
当我进屋子的时候，她在看书。
She was reading the book when I entered the room.
五、一般将来时
1、表示将来某一时刻或时间段发生的动作。
be to do : 事先计划安排好的将来
We are to discuss this report next Saturday.
be about to: 眼皮底下马上就要发生的事
Look! The train is about to leave!
六、过去将来时
1、立足过去，展望未来。
He said that he would do us a favor.
七、过去完成时
1、发生在过去某一时间或动作之前的事情。（过去的过去）
2、必须有一个过去的时间或动作来做参照，说明在此之前某事已经发生。
I had already swum for half an hour when he came to the swimming pool.Then he joined us.
要点1: 必须有一个过去的时间或动作来做参照，说明在此之前某事已经发生。
要点2: want/ hope/expect /suppose/ think 用过去完成时表示过去未曾实现的想法，打算或希望。
要点3: no sooner… than (一…就）hardly….when
八、现在完成时的已完成和未完成含义
1、已完成：动作在过去完成，并对现在产生影响，影响一直持续到现在。
Where have you put the recorder? I can’t see it anywhere?
I put it right here, but now it’s gone.
2、未完成：过去动作一直持续到现在，现在仍然在进行并还可以能延续下去。
We have known each other for 7 years since I moved here in 1998.
九、现在完成进行时
过去动作一直持续到现在，现在仍然在进行并还可能延续下去。
I have been swimming here for thirty minutes.And more people are coming to join us.
He has been swimming here for an hour.It seems that he will be in the water for another hour.
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