Exercise 01: Rewrite the sentence with “if/unless”. 1. Unless my sister is mistaken, she works for Nike. 2. Her friend is going to leave his job unless he gets a pay rise. 3. Unless she listens carefully, she won’t understand what we spoke. 4. If his sister doesn’t come over, he will listen to a good song. 5. If Jane finishes her work before 6 pm, she will dine out with her friends. 6. My brother won’t go travelling this summer if he doesn’t find a companion. 7. It is not easy to do these exercises unless you listen attentively to the teacher. 8. If Jim doesn’t submit his essay before Tuesday, he will be punished by the teacher. 9. Mai will be here tomorrow unless her flight is delayed. 10. Linda wouldn’t have called him if she hadn’t come back.  

Cách làm:

1. Đọc câu để xác định điều kiện và kết quả.
2. Xác định liệu câu đó đang dùng "if" hay "unless".
3. Chuyển câu sang câu có "if" hoặc "unless".

Câu trả lời:

1. If my sister is not mistaken, she works for Nike.
2. His friend is going to leave his job if he doesn't get a pay rise.
3. She won't understand what we spoke unless she listens carefully.
4. He will listen to a good song if his sister doesn't come over.
5. Jane will dine out with her friends if she finishes her work before 6 pm.
6. My brother won't go travelling this summer unless he finds a companion.
7. It is not easy to do these exercises if you don't listen attentively to the teacher.
8. Jim will be punished by the teacher if he doesn't submit his essay before Tuesday.
9. Mai will be here tomorrow if her flight is not delayed.
10. Linda wouldn't have called him if she hadn't come back.

5. Unless Jane finishes her work before 6 pm, she will dine out with her friends.

4. Unless his sister comes over, he will listen to a good song.

3. If she doesn't listen carefully, she won't understand what we spoke.

2. He is going to leave his job if he doesn't get a pay rise.