Viết lại câu: 1. We learned this after a long time -> it took... 2. Peter too young to see the horror film? ->peter is not... 3. My grandmother is very old. She can not work now ->my grandmother is too... 4. The children couldn't go swimming because the sea was roung ->the sea was so...

Phương pháp làm của câu hỏi trên là sử dụng cấu trúc "đảo ngữ" (inversion) để viết lại câu.

1. It took us a long time to learn this.
2. Peter is not old enough to see the horror film.
3. My grandmother is too old to work now.
4. The sea was so rough that the children couldn't go swimming.

4. The children couldn't go swimming because the sea was rough -> The sea was so rough that the children couldn't go swimming.

3. My grandmother is very old. She can not work now -> My grandmother is too old to work now.

2. Peter too young to see the horror film? -> Peter is not old enough to see the horror film.

1. We learned this after a long time -> it took us a long time to learn this.