1.She washes her car every day in the front yard.

⇒ Her car is washed every day in the front yard by hers.

Công thức câu bị động thì hiện tại đơn: S + am/is/are (not) + V3

2.The mechanic fixed this machine yesterday morning.

⇒ This machine was fixed yesterday morning by the mechanic.

Công thức câu bị động thì quá khứ đơn: S + were/ was (not) + V3

3.The boy is making a birthday cake for his mother at the moment.

⇒ A birthday cake was being made for his mother at the moment by the boy.

Công thức câu bị động thì hiện tại tiếp diễn: S + am/is/are (not) + being + V3

1.Her car is washed evey day in the front yard. ( câu bị động HTĐ S+is/am/are + V2 + (by + O)

2. This machine was fixed by the mechanic yesterday morning. ( câu bị động QKĐ S + was/ were + V2 + (by + O)

3. A birthday cake is being made for his mother by the boy at the moment. ( câu bị động HTTD S + being + p2 +(by + O)