現(xiàn)在完成時(shí)，一般將來時(shí)，一般過去時(shí)的用法
時(shí)態(tài)也是一種語法知識(shí)，是我們學(xué)習(xí)句型的一個(gè)重要語法知識(shí)。以下是小編為大家整理的關(guān)于三種時(shí)態(tài)的語法知識(shí)，希望能幫到大家。
現(xiàn)在完成時(shí)
現(xiàn)在完成時(shí)用來表示之前已發(fā)生或完成的動(dòng)作或狀態(tài)，其結(jié)果的確和現(xiàn)在有聯(lián)系。動(dòng)作或狀態(tài)發(fā)生在過去 但它的影響現(xiàn)在還存在;也可表示持續(xù)到現(xiàn)在的動(dòng)作或 狀態(tài)。其構(gòu)成： have (has) +過去分詞。
一般將來時(shí)
1)shall用于第一人稱，常被will 所代替。
will 在陳述句中用于各人稱，在爭(zhēng)求意見時(shí)常用于第二人稱。
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(jì)劃，安排要發(fā)生的事。
The play is going to be produced next month。
c. 有跡象要發(fā)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(jì)劃或正式安排將發(fā)生的事。
We are to discuss the report next Saturday.
4)be about to +不定式，意為馬上做某事。
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(shí)的時(shí)間狀語連用。
一般過去時(shí)的用法
1)在確定的過去時(shí)間里所發(fā)生的動(dòng)作或存在的狀態(tài)。
時(shí)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(shí)間內(nèi)，經(jīng)常性或習(xí)慣性的動(dòng)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(shí)間了" "該……了"
It is time sb. did sth. "時(shí)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'寧愿某人做某事'
I'd rather you came tomorrow.
4) wish, wonder, think, hope 等用過去時(shí)，作試探性的詢問、請(qǐng)求、建議等。
I thought you might have some. 我以為你想要一些。
比較：
一般過去時(shí)表示的動(dòng)作或狀態(tài)都已成為過去，現(xiàn)已不復(fù)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(xiàn)在還活著)
Mrs. Darby lived in Kentucky for seven years.
(含義：達(dá)比太太已不再住在肯塔基州。)
Mrs. Darby has lived in Kentucky for seven years.
( 含義：現(xiàn)在還住在肯塔基州，有可能指剛離去)
注意： 用過去時(shí)表示現(xiàn)在，表示委婉語氣。
1)動(dòng)詞want, hope, wonder, think, intend 等。
Did you want anything else?
I wondered if you could help me.
2)情態(tài)動(dòng)詞 could, would.
Could you lend me your bike?