`1.` A lot of money is spent on advertising every day

`2.` This room may be used for the classroom

`3.` A story is going to be told by the teacher

`4.` The cake is being cut with a sharp knife by Mary 

`5.` The woman with a red hat was looked at by the children

`6.` My hat was used to pull over my eyes by her

`7.` For the past years, all my washing has been done by hand

`8.` A nest has been built in the porch by a pair of Robins since last week

`9.` The murderer hasn't been found by the police yet

`10.` One of her paintings was sold at $1,000

`__________________________`

 `***` Bị động:

`*` HTĐ: S + am/is/are + V3/ed + (by + O)

`*` HTTD: S + am/is/are + being + V3/ed + (by + O)

`*` HTHT: S + has/have + been + V3/ed + (by + O)

`*` QKĐ: S  + was/were + V3/ed + (by + O)

`*` TLG: S + am/is/are + going to be + V3/ed + (by + O)

`*` ĐTKT: S + may/must/can/... + be + V3/ed + (by + O)

`1,` A lot of money is spent on advertising everyday.

- Câu bị động thì Hiện Tại Đơn : S + is/am/are + Vpp + (by O)

`2,` This room may be used for the classroom.

- Câu bị động của động từ khuyết thiếu : S + modal verb + be + Vpp + (by O)

`3,` A story is going to be told by the teacher.

- Câu bị động thì TLG : S + is/am/are + going to + be + Vpp + (by O)

`4,` The cake is being cut with a sharp knife.

- Câu bị động thì HTTD : S + is/am/are + being + Vpp + (by O)

`5,` The women with a red hat was looked at by the children

- Câu bị động thì Quá Khứ Đơn : S + was/were + Vpp + (by O)

`6,` My hat used to be pulled over my eyes.

- Câu bị động của used to : S + used to + be + Vpp + (by O)

`7,` For the past years , all my washing have been done by hand.

- Câu bị động thì HTHT : S + has/have + been + Vpp + (by O)

`8,` A nest has been built in the poch by a pair of Robins since last week.

- Câu bị động thì HTHT : S + has/have + been + Vpp + (by O)

`9,` The murderer hasn't been found by the police yet.

- Câu bị động thì HTHT : S + has/have + not + been + Vpp + (by O)

`10,` One of her paintings were sold at $1,000.

- Câu bị động thì Quá Khứ Đơn : S + was/were + Vpp + (by O)

`@` Chú ý:

- Trạng từ chỉ thời gian đứng sau by O , trạng từ chỉ nơi chốn đứng trước by O.

- Nếu ở câu bị động chủ ngữ là they , people , some one , sombody , something , no thing , no one , ... thì khi chuyển về câu bị động không dùng by O.

- Nếu ở câu bị động chủ ngữ là we , he , she , you , ... thì khi chuyển về câu bị động có thể dùng hoặc không dùng by O tùy vào ngữ cảnh.