初中英语被动语态复习课件.ppt

被动语态
Passive voice
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被动语态基本用法
当句子的主语是动作的执行者时，谓语的形式是主动语态。当句子的主语是动作的承受者时，谓语要用被动语态。被动语态由助动词be+过去分词构成，时态通过be表现出来。
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be + (动词的过去分词）
1)be 动词可以随时态人称的变化而变化
am/ is / are + V(过去分词）
was/ were+ V(过去分词）
will be + V(过去分词）
情态动词+ be + V (过去分词）
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：
1)一般情况在动词原形后加-ed
watch---watched
2)以不发音e结尾的加-d
practice---practiced
3)以辅音加y结尾的，去y变i加-ed
study---studied
4)以重读闭音节结尾，末尾只有一个辅音字母， 先双写该辅音字母，再加-ed
stop---stopped
：
am
is
are
been
have
has
had
do
done
write
written
go
gone
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He plants trees in spring.
主
谓
宾(受动者)
Trees
are planted
by
him
改为被动语态
in spring.
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主动语态变被动语态口诀：
宾语提前主语变，
原主变宾by后见，
时态人称be关键。
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Tom will clean the room tomorrow.
主
谓
宾(受动者)
The room
will be cleaned
by
Tom
tomorrow.
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His brother washes bowls every day.
主
谓
宾(受动者)
Bowls
are washed
by
his brother
every day.
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make shoes in that factory.
主语+及物动词+宾语
Shoes are made (by them) in that factory.
一般现在时：
S(主语）+am/is /are +过去分词
变为被动语态
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2. They bought ten computers last term．
Ten computers were bought (by them) last term.
一般过去时：S+was/were +过去分词
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