例如：He takes away the book.
The book is took away by him.
只要将句子中的宾语提前 动词时态与原句子相同 在适当的情况下变相应的动词即可.你可以最简单的想：根据汉语意思就能够将句子改写出来的.被动语态一般都是用BAY谁谁谁...很简单.