Bài 1. Chia động từ trong ngoặc ở thì quá khứ tiếp diễn để hoàn thành câu:

1. I lost my keys when I was walking home.
2. It was raining while we were having dinner.
3. I saw the department stores when I was sitting on the bus.
4. Her phone rang while she was talking to her new boss.
5. My friends were driving to work when they heard the news on the radio.
6. He was riding his bicycle when the cat ran across the road.
7. We couldn't go to the beach yesterday because it was raining.
8. It was a lovely day. The sun was shining and the birds were singing in the trees.
9. The tourist lost his camera while he was walking around the city.
10. The lorry was going very fast when it hit our car.
11. I was walking down the street when it began to rain.
12. At this time last year, I was attending an English course.
13. Jim was standing under the tree when he heard an explosion.
14. While I was studying in my room, my roommates were having a party in the other room.
15. Mary and I were dancing the house when the telephone rang.

Giải thích:

• Thì quá khứ tiếp diễn dùng để diễn tả một hành động đang diễn ra tại một thời điểm xác định trong quá khứ.
• Công thức: S + was/ were + V-ing
• Cách sử dụng:
  • Thường đi kèm với các từ như: while, when, as
  • Hai hành động xảy ra đồng thời trong quá khứ
  • Một hành động đang diễn ra thì hành động khác xen vào