CHANGE THESE SENTENCES INTO THE PASSIVE FORM: 1. He likes people to call him ' sir ' 2. Nobody has used this motor for a long time. 3. They began to build the house last year. 4. You need not type this letter. 5. She will ask her brother to fix her bike. 6. Nobody did homework at home.

Phương pháp làm:
- Để chuyển các câu sang dạng bị động, chúng ta thực hiện các bước sau:
1. Xác định chủ từ (subject) và đổi thành tân từ (object).
2. Đổi động từ chính thành dạng bị động bằng cách thêm "be" (đúng thì) hoặc "been" (hiện tại hoàn thành) và động từ phụ (past participle) của động từ chính.
3. Chuyển thì của câu thành câu bị động (nếu là hiện tại đơn thì thêm "is/are/am", nếu là quá khứ thì thêm "was/were", nếu là tương lai thì thêm "will be").

Câu trả lời:
1. He likes to be called 'sir' by people.
2. This motor has not been used for a long time.
3. The house was begun to be built last year.
4. This letter need not be typed by you.
5. Her bike will be fixed by her brother.
6. Homework was not done at home by anybody.

3. The house was begun to be built last year.

2. This motor has not been used for a long time.

1. He likes to be called 'sir' by people.

Phương pháp làm bài là viết lại câu sử dụng các cấu trúc yêu cầu như "so...that" hoặc "such...that". Trong đó, "so" được dùng để diễn đạt mức độ với tính từ trạng từ và công thức là "so + adj/adv" + "that" + câu gốc. "Such" được dùng để diễn đạt mức độ với danh từ và công thức là "such + a/an + adj" + "that" + câu gốc.

1) We went to bed early because we were very tired.
=> We were so tired that we went to bed early.

2) The lesson is very difficult. We can't understand it.
=> It is such a difficult lesson that we can't understand it.

3) The car is so old that he doesn't want to drive it.
=> It is such an old car that he doesn't want to drive it.

4) The weather was very cold. We couldn't go out.
=> The weather was too cold for us to go out.

5) The film was so interesting that we couldn't miss it.
=> It was such an interesting film that we couldn't miss it.

6) The film was very good. We saw it through. (Enough)
=> The film was good enough for us to see it through.