英语一般过去时的形式,定义及构成

一般过去时:
定义:
1.表示过去某个时间发生的动作或存在的状态.
---She ate three apples yesterday.
---昨天她吃了三个苹果.
2.表示过去经常或过去反复发生的动作
--(也可与often,always等频度的时间状语连用)
---He always got up very early when he was young.
---年轻的时候他每天总是起得很早.
谓语形式:
(1)did(动词的过去式)
---She was a student two years ago.
---两年前她是一个学生.
(这件事情已经过去了,所以be动词is要用 过去式:was)
---They were students two years ago.
---两年前他们是学生.
(这件事情已经过去了,所以be动词are要用 过去式:were)
---She ate three apples yesterday.
---昨天她吃了三个苹果.
(这件事情已经过去了,所以动词eat要用 过去式:ate)
---I did my homework promptly.
---我及时的完成了作业.
(这件事情已经过去了,所以动词do要用 过去式:did)
(do homework 做作业)
(2)was(were)+done(过去时的被动语态)
---The picture was painted two years ago.
---这幅图在两年前画的.
(这件事情已经过去了,图是被绘画的,所以用过去时的被动态.)
句子结构:
(1)
肯定句: 主语＋be动词(was,were)＋其他
---She was a student two years ago.
---两年前她是一个学生.
否定句: 主语＋be not(was not, were not)＋其他
---She was not a student two years ago.
---两年前她不是一个学生.
疑问句: Be动词(Was/Were)＋主语＋其他
---Was she a student two years ago?
---两年前她是一个学生吗?
(2)
肯定句: 主语＋动词的过去式＋其他
---She ate three apples yesterday.
---昨天她吃了三个苹果.
否定句: 主语＋did not＋动词原型＋其他
---She did not eat three apples yesterday.
---昨天她没吃三个苹果.
疑问句: Did＋主语＋动词原型＋其他
---Did she eat three apples yesterday?
---昨天她吃了三个苹果吗?
注意:
wasn't 是 was not 的缩写.
weren't 是 were not 的缩写.
didn't 是did not 的缩写.
常用的时间状语:
yesterday昨天,two days ago,three days ago(两年前,三年前)等等.
long ago很久以前
last + week(year, night, month…)上一周,去年,昨晚,上个月等等.
in 1989,in 2008等等.
a moment ago 刚才,just now 刚才.
when he was young 当他年轻的时候.