1. By the time she took a rest and watched TV, she had done all the washing

- By the time QKD, QKHT

2. I began doing this work years ago

- begin Ving

3. Would you mind not smoking in this room?

- Would you mind not Ving?

4. I saw him doing his homework when I came in.

- see sb Ving

5. The headmaster came in while we were studying English

- QKD while QKTD

1.She did all the washing. Then she took a rest and watched TV.

🡪 By the time she took a rest and watched TV, she did all the washing

By the time+ Mệnh đề

2.I have done this work for years.

🡪 I began doing this work years ago

công thức S+began+Ving+time ago

3. Please don’t smoke in this room

->Would you mind smoking this room?

Would you mind + Ving

5.In the middle of English lesson, the headmaster came in. (while)

->While we were having English lesson, the headmaster came in.

dịch Trong khi chúng tôi đang học tiếng Anh thì hiệu trưởng bước vào.

4.He was doing his homework when I came in.

->I saw him doing homework when I came in.

Tôi thấy anh ấy đang làm bài tập khi tôi bước vào