Chuyển sang câu bị động 10. We should brush our teeth twice a day. 11. Did Mary buy this beautiful dress? 12. We have to clean the floor every day. 13. Our teacher has explained the English grammar. 14. Are you going to repair those shoes? 15. Some people will interview the new president on TV

10. Our teeth should be brushed twice a day.

11. Was this beautiful dress bought by Mary?

12. The floor has to be cleaned every day.

13. The English grammar has been explained by our teacher.

14. Are those shoes going to be repaired?

15. The new president will be interviewed on TV.

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- Bị động với động từ khuyết thiếu (10,12): S + should/would/have to/... + be + V3/ed + O.

- Bị động HTĐ (11): Was/Were + S + V3/ed + O?

- Bị động HTHT (13): S + have/has + been + V3/ed + O. 

- Bị động TLG (14): Is/Are + S + going to be + V3/ed + O?

- Bị động TLĐ (15): S + will be + V3/ed + O.

Với O là các danh từ xác định như: she/he/sở hữu/...

Nếu O chung chung, chưa xác định thì có thể bỏ đi.