be + 过去分词，白话只也有效get / become + 过去分词表现。
My friend gave me an interesting book on my birthday.
An interesting book was given to me(by my friend)on my birthday.
I was given an interesting book (by my friend)on my birthday.
The boss made him work all day long.
He was made to work all day long(by the boss)
The children were taken good care of (by her).
Your pronunciation and spelling should be paid attention to.
④神志动词和be going to、be to、be sure to、used to、have to、had better等结构变主动语态， 只需将它们前面的动词本相变成be +过去分词。
People say he is a smart boy.
It is said that he is a smart boy.
He is said to be a smart boy.
People know paper was made in China first.
It is known that paper was made in China first.
Paper was known to be made in China first.
相似句型有：It is said / known / suggested / believed / hoped/ thought that …
②表现形状的谓语动词，如：last、hold、benefit、contain、equal、fit、join、mean、last、look like、consist to等。