1. Why wasn't he helped?

2. How many games have been played by the team?

3.Where is Engligh sopken?

4.Who being kept in the kitchen?

5.How can this safe be opened?

6.What books are being read this year?

7. How was the lost man found by the police?

8. Who are you looked after the chidren by?

9. How long has the doctor been waited?

10. What time can their papers be handed by the boys?

11. Who are you lent this book by?

→ Đều là câu bị động

`1`  Why wasn't he helped?

`2` How many games have been played by the team?

`3` Where is english spoken? 

`4 ` Who is being kept in the kitchen?

`5` How can this safe be opened?

`6 ` What books are being read this year?

`7` How was the lost man found by the police?

`8` Who are you looked after the children by?

`9` How long has the doctor been waited?

`10` What time can their papers be handed by the boys?

`11` Who are you lent this book by?

Câu BD : 

Thì HTD : Wh + is / are / am + S+ Vpp+ O ? 

Thì  QKD : Wh+ was / were + S + Vpp+ O ? 

Thì HTHT : Wh + has / have + S + been + Vpp+ O ? 

 Thì HTTD : Wh + is / are / am + S + being + Vpp+ O ? 

Với model verbs: Wh+ can/ could /... + S+ Vpp +O ?