英语长够用的时态语法用法
学习啦在线学习网 时态也是一种语法知识，是我们学习句型的一个重要语法知识。以下是小编为大家整理的关于三种时态的语法知识，希望能帮到大家。
现在完成时
学习啦在线学习网 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。
一般将来时
学习啦在线学习网 1)shall用于第一人称，常被will 所代替。
学习啦在线学习网 will 在陈述句中用于各人称，在争求意见时常用于第二人称。
学习啦在线学习网 Which paragraph shall I read first.
学习啦在线学习网 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。
学习啦在线学习网 What are you going to do tomorrow?
b. 计划，安排要发生的事。
学习啦在线学习网 The play is going to be produced next month。
学习啦在线学习网 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。
一般过去时的用法
学习啦在线学习网 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。
学习啦在线学习网 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。
学习啦在线学习网 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。
学习啦在线学习网 Christine was an invalid all her life.
学习啦在线学习网 (含义：她已不在人间。)
Christine has been an invalid all her life.
(含义：她现在还活着)
学习啦在线学习网 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.
学习啦在线学习网 2)情态动词 could, would.
Could you lend me your bike?