1.People know that cars pollute the environment.

Cars are known to pollute the environment.

2.People believe that the robber has worked in the bank.

The robber is believed to have worked in the bank.

3.Many people believe that she is an honest person.

It is believed that she is an honest person.

4.They think that the president will arrive soon.

It is thought that the president will arrive soon.

5.It is reported that many passengers died in the crash.

Many passengers  re reported to have died in the crash.

6.It is expected that the prices will rise again this month.

The prices are expected to rise again this month.

7.It is proved that life doesn’t exist on the moon.

Life is proved not to exist on the moon.

8.They say that he has passed the final exam with the best result.

He is said to have passed the final exam with the best result

9.He is said to have been in the army.

10.It is believed that the man escaped in a stolen car.

The man is believed to have escaped in a stolen car.

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Trong câu chủ động: S1 + say + that + S2 + V2 + …

Trong câu bị động: It is said that + S2 + V2 + …

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It is said that + S1 + V1 + …

 S1 + (tobe) + said + to Vinf… (Khi V1 cùng thì với tobe)

 S1 + (tobe) + said + to have Ved/PII +… (Khi V1 khác thì với tobe)