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