一、一般过去时（表示过去某个时间点或时间段的动作）

1. I got up late so I was late for school today.（我起晚了，所以今天上学迟到了。）

2. Yesterday my sister broke a cup.（昨天我姐姐打碎了一个杯子。）

3. The teacher asked me to go to the office.（老师让我去办公室。）

4. Last year I could swim but now I can't.（去年我会游泳，但现在不会了。）

5. Last night Lucy wrote an e-mail to her penfriend in England.（昨晚露西给她在英国的笔友写了封邮件。）

二、过去进行时（表示过去某个时间正在进行的动作）

6. At 8 o'clock yesterday, I was reading a book.（昨天8点，我正在读一本书。）

7. When the movie started, we were already eating popcorn.（电影开始时，我们已经在吃爆米花。）

8. She was crying just now.（她刚才还在哭。）

9. They were playing soccer in the park last Saturday.（他们上周六正在公园踢足球。）

10. I was waiting for the bus when it arrived.（公交车到达时，我正在等车。）

三、过去完成时（表示过去某一时间前已完成的动作）

11. By the time we arrived, the meeting had already started.（我们到达时，会议已经开始。）

12. He had finished his homework before dinner.（晚餐前他已经完成了作业。）

13. She had lived in London for five years before moving to New York.（搬到纽约前，她已经在伦敦住了五年。）

14. We had been friends since childhood.（我们从小就是朋友。）

15. The letter arrived before I could reply.（我还没来得及回复信件，它就已经到了。）

注：部分句子中过去分词作后置定语（如"the broken cup"）或状语（如"before I loved Gigi"），需结合具体语境理解。