現在完成時，一般將來時，一般過去時的用法

時態也是一種語法知識，是我們學習句型的一個重要語法知識。以下是小編爲大家整理的關於三種時態的語法知識，希望能幫到大家。

　　現在完成時

現在完成時用來表示之前已發生或完成的動作或狀態，其結果的確和現在有聯繫。動作或狀態發生在過去　但它的影響現在還存在;也可表示持續到現在的動作或　狀態。其構成： have (has) +過去分詞。

　　一般將來時

1)shall用於第一人稱，常被will 所代替。

will 在陳述句中用於各人稱，在爭求意見時常用於第二人稱。

Which paragraph shall I read first.

Will you be at home at seven this evening?

2)be going to +不定式，表示將來。

a. 主語的意圖，即將做某事。

What are you going to do tomorrow?

b. 計劃，安排要發生的事。

The play is going to be produced next month。

c. 有跡象要發生的事

Look at the dark clouds, there is going to be a storm.

3)be +不定式表將來，按計劃或正式安排將發生的事。

We are to discuss the report next Saturday.

4)be about to +不定式，意爲馬上做某事。

He is about to leave for Beijing.

注意：be about to 不能與tomorrow, next week 等表示明確將來時的時間狀語連用。

　　一般過去時的用法

1)在確定的過去時間裏所發生的動作或存在的狀態。

時間狀語有：yesterday, last week, an hour ago, the other day, in 1982等。

Where did you go just now?

2)表示在過去一段時間內，經常性或習慣性的動作。

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……時間了"　 "該……了"

It is time sb. did sth. "時間已遲了"　 "早該……了"

It is time for you to go to bed.　 你該睡覺了。

It is time you went to bed.　　　你早該睡覺了。

would (had) rather sb. did sth.　表示'寧願某人做某事'

I'd rather you came tomorrow.

4) wish, wonder, think, hope 等用過去時，作試探性的詢問、請求、建議等。

I thought you might have some. 我以爲你想要一些。

比較：

一般過去時表示的動作或狀態都已成爲過去，現已不復存在。

Christine was an invalid all her life.

(含義：她已不在人間。)

Christine has been an invalid all her life.

(含義：她現在還活着)

Mrs. Darby lived in Kentucky for seven years.

(含義：達比太太已不再住在肯塔基州。)

Mrs. Darby has lived in Kentucky for seven years.

( 含義：現在還住在肯塔基州，有可能指剛離去)

注意： 用過去時表示現在，表示委婉語氣。

1)動詞want, hope, wonder, think, intend 等。

Did you want anything else?

I wondered if you could help me.

2)情態動詞 could, would.

Could you lend me your bike?