Unit 6 When was it invented 语法知识：被动语态 课件(共22张PPT)

(共22张PPT)
Unit 6 When was it invented
九年级英语-全一册
语法知识：被动语态
导入
2
Jiang Tian' mask was pulled off by the little girl,
so she was inflected the coronavirus.
be done 被动语态结构
电影：《最美逆行》
一、被动语态的定义
英语中有两种语态:主动语态和被动语态。
在主动语态中，主语是谓语动词的发出者。
在被动语态中，主语是谓语动词的承受者。
4
被动语态（Passive voice)
被动语态是动词的一种形式，是用于说明主语和谓语之间的关系。
英语语态分为主动语态和被动语态。
People plant trees in spring.
动词
（动作）
动作的
执行者
动作的
承受者
主动语态
Trees are planted by people in spring.
被动语态
二、被动语态的形式
。
被动语态的基本结构：
被动语态存在时态变化。变化被动语态的时态就是把 “be”变成相应时态，比如
一般过去时的被动语态：was, were + 过去分词
一般将来时的被动语态：will + be + 过去分词
现在完成时的被动语态：has, have + been + 过去分词
含情态动词的被动语态：情态动词 + be + 过去分词
注：规则动词的过去分词以“-ed”结尾
be + 过去分词
6
一般现在时的被动语态：
主语（动作的承受者）+be(am,is,are) done+by 宾语（动作的执行者）
My mother cleans the room every day.
The room is cleaned by my mother everyday.
hybrid rice.
Yuan Longping invented
Hybrid rice
was invented
by Yuan Longping .
小结： 一般过去时的被动语态
主语（动作的承受者）+be(was,were) done+by 宾语（动作的执行者）
Shen Nong invented tea.
Tea was invented by Shen Nong.
9
Beijing National Stadium
People built .
Beijing National Stadium was built by people.
.
We speak English.
主语
谓语
宾语
主语
谓语
宾语
主动句
被动句
三、主动句变被动句的步骤
1
2
3
步骤：
English
be spoken
(by us).
1宾变主
2主变宾,前加by
3动变被,看清be, 结构式为be + done
前提：主动句中谓语动词必须是及物动词，不及物动词没有
被动语态
is
we clean up the room .
主语
谓语
宾语
主语
谓语
宾语
难点1
如果主动句中动词为短语动词，如何变为被动句？
1
2
3
结论：变被动句时应把短语动词看做一个整体，只需把动 词部分变为过去分词形式，其他部分不用变化
The room
clean up
(by us).
is
ed
I lent Tom a book .
主语
谓语
间宾
主语
谓语
宾语
1
2
3
直宾
4
难点2
如果主动句中包含双宾语，有几种转换方法？如何将其变为被动句？
Tom
was lent
a book
(by me).
I lent Tom a book.
主语
谓语
直宾
主语
谓语
宾语
4
2
3
间宾
1
A book
was lent
Tom
(by me).
结论：当主动句含有两个宾语时，有两种方法变为被动句。
直宾做被动句主语时，前面需添加适当的介词
（常见的有for，to)。
to
Sam saw him play soccer .
主语
谓语
宾语
主语
谓语
宾语
1
2
3
补语
4
He
was seen
play soccer
(by Sam).
结论：当主动句中补语为“do”时，变为被动句时应改为 “to do”。补语为其他情况不需要做出任何变化。
难点3
如果主动句中包含补语（n, adj, do, to do, doing, done等）时，如何将其变为被动句？
to
四、重点回顾
一 被动语态定义：主语是谓语动词的承受者
二 被动语态基本结构： be +过去分词
三 主动句变被动句基本步骤：宾变主；主变宾，
前加by；动变被，看清be,结构式为be + done.
1. A new hospital________ in my town next year.
A. builds B. built C. is built D. will be built
D
解析：主语a new hospital 和谓语动词build为被动关系。
而next year表将来，所以此题考察一般将来时的
被动语态。
五、例题解析
2. All the mobile phones must _______before
the meeting begins.
A. turn off B. turned off C. be turned off D. are turned off
C
解析：根据句意， “所有的手机都要被关闭”，所以
使用被动语态。情态动词must 后面 要用原形be。
3. The students in this school are made ______
school uniforms .
A. to wear B. wearing C. wear D. worn
A
解析：该题原主动句结构应为make sb. do sth。主动句补语
为 do，变被动句时应变为to do。即sb be made to do
sth。
课堂练习
1919
Make sentences
Personal computers were invented in 1971.
1971
1885
Cars were invented in 1885.
1876
The telephone was invented in 1876.
1927
The TV was invented in 1927
课堂练习
20
1. Annie_____to the party. She had a wonderful time with us.
A. invites B. is invited C. was invited D. has invited
2. Han Han’s books are popular. They____by many
teenagers.
A. is read B. was read C. are read D. were read
课堂练习
21
3.I rode my bike to school yesterday.(改为被动语态）
My bike _______ _______ to school by me yesterday.
was ridden
22
Thanks for listening