Ex1: Chuyển các câu sang dạng bị động

1. A pencil is used by my brother to draw beautiful pictures.

2. Their work had been finished before you came yesterday.

3. You will be called if there is any important information.

4. Alice was appointed secretary for the meeting by the committee.

5. Anna will be given a ride to school by Tom tomorrow.

Ex2: Chuyển các câu sang dạng bị động

1. This dish is brought to me by the waiter.

2. These postcards are sent to us by our friends.

3. This story was told to them by their grandmother when they visited her last week.

4. This train ticket was ordered for Tim's mother by him.

5. Her ticket was showed to the airline agent.

* Cấu trúc bị động: S + be + V(pp) + từ chỉ địa điểm + by O + từ chỉ thời gian.

* Trường hợp đặc biệt: Noun + be + V(pp) + to sb + by sb, (đối với các động từ như bring, send, ...)