`1.` A lot of presents are bought.

`2.` The floor is being swept.

`3.` I am not helped.

`4.` The essay isn't written.

`5.` A folk song is being sung by the girls.

`6.` Table tennis is being played by Mr. Thompson and his son at the moment.

`7.` A luxury car will be bought by Ben.

`8.` Cookies are being sold for Christmas right now.

`9.` The cooker wasn't bought.

`10.` Ho Chi Minh Mausoleum was visited by thousands of people yesterday.

`11.` I wasn't invited to her birthday party.

`12.` My key was lost yesterday.

`13.` The new camera will be shown.

`14.` The first book was written by J. K. Rowling at the age of six.

`15.` A cake is being baked by my sister.

`16.` A meeting will be held by his boss.

`17.` He will never be asked.

`18.` The bank wasn't opened last weekend.

`-----------------`

`-` Cấu trúc câu bị động thì HTĐ`:`

`(+)` S `+` am/is/are `+` PII `+` (by O)

`(-)` S `+` am/is/are `+` not `+` PII `+` (by O)

`(?)` Am/Is/Are `+` S `+` PII `+` (by O) `?`

`-` Cấu trúc câu bị động thì HTTD`:`

`(+)` S `+` am/is/are `+` being `+` PII `+` (by O)

`(-)` S `+` am/is/are `+` being `+` not `+` PII `+` (by O)

`(?)` Am/Is/Are `+` S `+` being `+` PII `+` (by O) `?`

`-` Cấu trúc câu bị động thì QKĐ`:`

`(+)` S `+` was/were `+` PII `+` (by O)

`(-)` S `+` was/were `+` not `+` PII `+` (by O)

`(?)` Was/Were `+` S `+` PII `+` (by O) `?`

`-` Cấu trúc câu bị động thì TLĐ`:`

`(+)` S `+` will be `+` PII `+` (by O)

`(-)` S `+` will be `+` not `+` PII `+` (by O)

`(?)` Will `+` S `+` be `+` PII `+` (by O) `?`

`@` Lưu ý:

`+` Trong câu chủ động với các chủ ngữ “I, They, We, somebody, someone,everybody, everyone,....” thì khi chuyển sang câu bị động ta bỏ By O.

`+` By O đứng trước trạng từ chỉ thời gian và đứng sau trạng từ chỉ nơi chốn.

Công thức - bị động:

- Thì HTĐ:

(+) S + am/is/are + V3/ed 

(-) S + am/is/are + not + V3/ed 

- Thì HTTD: S + am/is/are + being + V3/ed 

- Thì TLĐ: S + will be + V3/ed 

- Thì QKĐ:

(+) S + was/were + V3/ed 

(-) S + was/were + not + V3/ed 

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1. A lot of presents are bought.

2. The floor is being swept.

3. I am not helped.

4. The essay isn't written.

5. A folk song is being sung by the girls.

6. Table tennis is being played by Mr. Thompson and  his son at the moment.

7. A luxury car will be bought by Ben.

8. Cookies are being sold for Christmas right now.

9. The cooker isn't bought.

10. The Ho Chi Minh Mausoleum was visited by thousands of people yesterday.

11. I wasn't invited to her birthday party.

12. My key was lost yesterday.

13. The new camera will be shown.

14. J. K. Rowking's first book was written at the age of six.

15. A cake is being baked by my sister.

16. A meeting will be held by his boss.

17. He will never be asked.

18. The bank wasn't opened last weekend.

`color{orange}{~LeAiFuRuiHuiBao~}`