$11.$ That cake has been made by my mother.

$12.$ Some of my books have been taken away.

$13.$ A new bus stop has been built near my house.

$14.$ That house hasn't been used for many years.

$15.$ Our homework hasn't been finished yet.

- Câu $11$ $-$ câu $15$: Câu bị động thì hiện tại hoàn thành: S + have/ has + been + V (P_II) + (by O).

  $+$ I, You, We, They, Danh từ số nhiều: dùng "have".

  $+$ He, She, It, Danh từ số ít: dùng "has".

$-------------------------"$

$16.$ The sitting-room is being decorated by the children.

$17.$ He is being questioned by the police about the stolen goods.

$18.$ The students are being shown by the foreman around the factory.

$19.$ The cake is being cut by Mary with a sharp knife.

$20.$ Ba's bike is being repaired by the mechanic.

- Câu $16$ $-$ câu $20$: Câu bị động thì hiện tại tiếp diễn: S + am/ is/ are + (not) + being + V (P_II) + (by O).

  $+$ I: dùng "am".

  $+$ You, We, They, Danh từ số nhiều: dùng "are".

  $+$ He, She, It, Danh từ số ít: dùng "is".

11. That cake has been made by my mother

12. Some of my books have been taken away

13. A new bus stop has been built near my house

14. That house has been used for many years 

15. Our homework hasn't finished yet

16. The sitting-room is being decorated by the children

17. He is being questioned about the stolen goods by the police

18. The students are being showed around the factory by the foreman

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

20. Ba's bike is being repaired by the mechanic

QKĐ: S + was/ were + PP + (by O)

QKTD: S + was/ were + being + PP + (by O)

QKHT: S + had + been + PP + (by O)

HTĐ: S + am/ is/ are + PP + (by O)

HTTD: S + am/ is/ are + being + PP + (by O)

HTHT: S + have/ has + been + PP+ (by O)

TLĐ: S + will be + PP + (by O)

TLG: S + is/ am/ are + going to + be + PP + (by O)

Modal verb: S + modal verb (should, must, have to, can,...) + be + PP + (by O)