仁爱九年级上Unit3Topic1SectionA课件.ppt

---By David
Unit3 English Around the World
Topic 1 English is widely spoken
throughout the world.
Section A
The Passive Voice.
助动词be+及物动词的过去分词
be +
Revision:
Grammar focus:
步骤1:把原主动句中的宾语转换为被动语态的主语。
步骤2:把动词改为被动形式(be+过去分词)
(1)人称和数要随着新的主语而变。
(2)时态和原主动句保持一致。
步骤3:原来的主语,改为“by+宾语”形式,也可省略。(将主格变为宾格)
步骤4:其他成分(定语、状语)保持不变,照抄。
主动语态变被动语态的方法:
Many people speak English.
主语
谓语
宾语
English is spoken by many people.
主语
谓语
宾语
主动语态
被动语态
被动语态构成:助动词 be +及物动词的过去分词
一般现在时:am/is /are + 过去分词
一般过去时: was/were + 过去分词
一般将来时:will/shall be + 过去分词
现在进行时:am/is/are being + 过去分词
过去进行时: was/were being + 过去分词
现在完成时: have/has been + 过去分词
3. We will write a diary next class.
4. We must protect the environment.
A diary__________________ by us
next class.
The environment_________________
by us .
will be written
must be protected
一些特殊结构的被动结构:
(1)感觉动词(hear, see等)改被动语态
(2)使役动词(let, make等)改被动语态
如动词为 make, see, hear, watch 等,后接
宾语补足语为不带“to”不定式时,变被动
语态时要加上“to”。如:
5. I saw him fall off the tree.
→He was seen __________the tree.
to fall off
see sb. doing sth.
=sb. be seen doing sth.
I saw him playing football at that moment.
He ________________football at that moment.
was seen playing
1. My mother bought me a new bike.
=I ______________a new bike by my mother.
=A new bike ________________by my mother.
带有双宾语的主动语态变被动语态时,
直接或间接宾语都可做主语,
间接宾语前加 to或for.
2. Jack gives Tom a book.
=Tom __________a book by Jack.
=A book ________________by Jack.
was bought
was bought for me
is given
is given to Tom