语法沉淀

happen

1. A car accident happened to her this morning.

2. What happened to you?

3. What happened to Helen last night?

4. I’m very sorry for all happened to you.

含义：发生

固定搭配：happen to sb.

sth. happen to sb.某事发生在某人身上

过去完成时

1.I asked the price of the car,

but they had already sold it

2.I ran to the platform quickly, but the train had already left.

3.He gave us our exercise books

after he had corrected them.

4.She went on a holiday

after she had taken the examination.

5.She had finished the housework

before she went out.

6.We had had dinner before they arrived.

1.I asked

but they it

2. us our exercise books

had corrected them.

3.S he went on a holiday

after she had taken the examination.

4.S he had finished the housework before she went out.

5.W e had had dinner before they arrived.

概念：过去完成时，表示在过去某一时间或动作之前已经发生或完成了的动作或状态。它表示句子中描

述的动作发生在“过去的过去”。

结构:

主语 + had + 过去分词(done)

①肯定句：主语 +had + p.p + 其他.

②否定句：主语 + had + not + p.p + 其他.

③一般疑问句：Had + 主语 + p.p + 其他?

肯定回答：Yes,主语 + had.

否定回答：No, 主语 + had not .

④特殊疑问句：

特殊疑问词或词组+had + 主语+p.p

时间状语:

before, after, already…等。