四、句子结构

1、在表示某个时间里存在的状态的句子，系动词用过式was，were构成。如：

(1)I was at home yesterday.　昨天我在家。 (2)We were in the gym just now. 刚才我们在体育馆。

2、在表示过去某个时间里发生的动作，用动词的过去式构成。如：

I visited my uncle yesterday. 昨天我拜访了我的叔叔。

3.各种句式

(1)一般过去时的肯定陈述句：

主语 + 动词过去式 + 宾语或表语。

He worked in Shanghai ten years ago.

(2)一般过去时的否定句：

a.主语 + didn’t + 动词原形 + 宾语。 (did + not = didn't)

He didn't do morning exercises yesterday.

b.主语 + wasn’t/weren’t +表语。(was + not = wasn't were + not = weren't)

He wasn't an English teacher ten years ago.

(3)一般过去时的一般疑问句：

a.Did + 主语 + 动词原形 + 宾语 ?

Did you study English in 1990 ?

b.Was/Were + 主语 + 表语 ?

Was he a pupil five years ago ?

(4)一般过去时的特殊疑问句：

a.特殊疑问词 + did + 主语 + 动词原形 + 宾语?

Where did your parents live five years ago?

What did you do last Sunday?

b.特殊疑问词 + were/was + 表语?

Who was at the zoo yesterday?

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