1 Our written work was returned to us by the teacher

`->` Câu bị động thì quá khứ đơn : S(O)+was/were +P2+(by Os)`

2 That group was taught by Alice for the time being

`->` Câu bị động thì Quá khứ đơn

3 The other members were called by John

`->` Câu bị động thì Quá khứ đơn 

4 A new procedure was developed by the company

`->` Câu bị động thì QKĐ

5 The car is washed by my father

`->` Câu bị động thì hiện tại đơn : `S(O)+am//is//are+P2+(by Os)`

`20`. Our written work was returned to us by the teacher

`21`. For the time being, that group was taught  by Alice

`22`. The other members were called by John

`23`. A new procedure was developed by the company

`24`. The car is washed by my father

______________________________

`\text{ Ta có cấu trúc câu HTĐ: S+be(am/is/are) +V(PII)+.... (by O) }`

`\text{ Ta có cấu trúc câu QKĐ : S+was/were + V(PII)+.....( by O) }`

$#FromTha$