Unit 6 An old man tried to move the mountains.被动语态(2)（课件）（共有PPT13张）

(共13张PPT)
被动语态
The Passive Voice
人教版 八年级英语
一.主动语态和被动语态
英语动词有两种语态，即主动语态（The Active Voice)和被动语态(The Passive Voice).
主动语态表示主语是动作的执行者，被动语态表示主语是动作的承受者。如：
一.主动语态和被动语态
Bell invented the telephone in 1876.
｛
The telephone was invented by Bell in 1876.
(主动语态）
(被动语态）
The local newspaper interviewed him.
He was interviewed by the local newspaper.
｛
(主动语态）
(被动语态）
二.被动语态的构成
结构：“助动词be+及物动词的过去分词”.
助动词be有人称、数和时态的变化，其变化规则与be作为连系动词是完全一样。
二.被动语态的构成
I am asked a question by the teacher.
｛
He is asked a question by the teacher.
be 的
人称变化
The desk is made of wood.
The desks are made of wood.
｛
be 的
数的变化
二.被动语态的构成
The tall building was built last year.
｛
The tall building is being built now.
be 的
时态变化
三.含有情态动词的被动语态
结构：“情态动词+be+及物动词的过去分词”.如：
The trees may be planted in spring.
The room must be kept clean.
Teenagers should be allowed to choose their own clothes.
四.被动语态的用法
1.当我们不知道谁是动作的执行者时。
They found that the window was broken.
2.当没有必要指出谁是动作的执行者时。
English is spoken in Canada.
四.被动语态的用法
3.当只需要强调动作的承受者时。
His little brother was taken good care of yesterday.
五.真题演练——单项选择
1. Today,smart phones are really helpful.They____everywhere.
A.use B.are using C.are used
答案：C.
C.are used
五.真题演练——单项选择
2. Hey,turn it off! Music _____in the library.
A.didn`t allow B.isn`t allowed C.won`t allow
答案：B.
B.isn`t allowed
五.真题演练——单项选择
3. I heard that most of Jeff`s best books_____when he was sick and poor.
A.had written B.were writing C.were written
答案：C.
C.were written
五.真题演练——单项选择
4. --Why didn`t you come to Jim`s Christmas party We had a good time.
--I wanted to go,but I______.
A.don`t invite B.am not invited C.wasn`t invited
答案：C.
C.wasn`t invited