Question

1.We don't know whether Mr.Stevenson was washing his new car when you called him.

2.She waters her young plants twice a day.

3.Dr.Walker has examined three patients.

Answer 1

1 We don't know whether Mr.Stevenson's car was being washed by him when he was called.

-Bị động thì quá khứ tiếp diễn: S + was/were + being + PII + (by O)+....

-Bị động thì quá khứ đơn: S + was/were + PII + (by O)+....

2 Her young plants are watered twice a day.

-Bị động thì hiện tại đơn: S + am/is/are + PII + (by O)+......

3 Three patients have been examined by Dr.Walker.

-Bị động thì hiện tại hoàn thành: S + has/have + been + PII + (by O)+......