be动词的被动语态 be + p.p.

How many people are killed in car accidents every day?

每天有多少人死于车祸？

How many people are injured in car accidents every day?

每天有多少人因车祸受伤？

The question will be discussed tomorrow. 这个问题明天讨论。

Have you ever been bitten by a dog? 你被狗咬过吗？

It is said that Peter was handsome when he was young.

听说Peter年轻时很帅。