chuyển sang câu bị động 1. He discovered that this cotton was grown in Egypt -> 2. Some people inform me that the director is going to take a businness trip in England -> 3. He recommends that we should stay at the city center -> 4. They promise that the performance will start on time ->

Phương pháp chuyển câu sang cấu trúc bị động gồm các bước sau:
1. Xác định chủ ngữ và đổi thành tân ngữ.
2. Đổi động từ chính thành bị động.
3. Trong trường hợp còn các đại từ tân ngữ, chúng cũng được đổi thành phần từ chủ động.

Câu trả lời cho câu hỏi trên:
1. It was discovered that this cotton was grown in Egypt.
This cotton was discovered to be grown in Egypt.
2. I am informed by some people that the director is going to take a business trip in England.
It is informed to me by some people that the director is going to take a business trip in England.
3. It is recommended by him that we should stay at the city center.
We are recommended by him to stay at the city center.
4. It is promised by them that the performance will start on time.
The performance is promised to start on time by them.

4. They promise that the performance will be starting on time.

4. It is promised by them that the performance will start on time.

3. The recommendation is that we should stay at the city center.

3. We are recommended by him to stay at the city center.