主動:He broke the window.他打破了窗戶
句型:be(am,is are)+過去分詞+by sb(賓格)
註意時態要壹致
感官動詞變被動語態:Sb be {seen}(感官動詞的過去分詞)
We usually hear him play in the next room.
<-He is usually heard to play in the room.
口訣:"賓"(賓格)變主,主變賓,前加by
動變被,看清be,結構分別be+p.p(過去分詞)
註意:要改被動語態時,要找出壹個句子中第壹個動詞提前
例題：
1.A bridge was built last years.
2.Paper is made from wood.
3.The work must be done at once.
4.Her watch was stole last night.
5.He hit her yesterday.
6.The students are allowed to play basketbal after school every day.
7.We are told that the English test will be given next Monday.