在英语语法中，过去进行时是一种重要的时态，用来描述在过去某一时刻正在进行的动作或事情。它由“was/were + 动词-ing”构成，其中“was”用于第一人称单数（I）和第三人称单数（he/she/it），而“were”用于第二人称（you）以及复数形式（we/they）。通过以下练习题，我们可以更好地掌握这种时态的用法。
练习题一：选择正确的动词形式
1. 昨天晚上8点，Tom ________ (watch) TV.
- A. watched
- B. was watching
- C. is watching
2. 我们昨晚七点 ________ (have) dinner.
- A. had
- B. were having
- C. have
3. 她当时 ________ (read) 一本有趣的小说。
- A. read
- B. reads
- C. was reading
4. 昨天这个时候，他们 ________ (play) 足球。
- A. played
- B. are playing
- C. were playing
5. 上周日早上，我 ________ (clean) 房间。
- A. cleaned
- B. was cleaning
- C. clean
练习题二：填空题
1. 当电话响的时候，我正在 ________ (eat) 早餐。
2. 昨天下午三点，我 ________ (write) 一封信给朋友。
3. 昨晚七点，他 ________ (listen) 到窗外的雨声。
4. 那个时候，孩子们正在 ________ (play) 游戏。
5. 妈妈当时正在厨房里 ________ (cook) 晚餐。
练习题三：改写句子
将下列句子改为过去进行时：
1. I cooked dinner at 7 PM yesterday.
→ I ________ ________ dinner at 7 PM yesterday.
2. She wrote a letter to her friend last night.
→ She ________ ________ a letter to her friend last night.
3. They played basketball in the park last Sunday.
→ They ________ ________ basketball in the park last Sunday.
4. We cleaned the room before going out.
→ We ________ ________ the room before going out.
5. He read a book in his bedroom last evening.
→ He ________ ________ a book in his bedroom last evening.
答案解析
练习题一答案：
1. B. was watching
2. B. were having
3. C. was reading
4. C. were playing
5. B. was cleaning
练习题二答案：
1. eating
2. was writing
3. was listening
4. playing
5. cooking
练习题三答案：
1. was cooking
2. was writing
3. were playing
4. were cleaning
5. was reading
通过以上练习，我们可以发现，过去进行时主要用于描述一个动作在过去的某个具体时间点正在进行。希望大家能通过这些题目巩固对这一时态的理解！如果还有疑问，可以多加练习，熟练掌握其用法。
