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5.现在进行时态的被动语态结构:
am/ is /are+being + vt 过去分词
6.过去进行时态的被动语态结构:
was / were + being+ vt 过去分词
7.现在完成时态的被动语态结构: have/has been + vt 过去分词
变化：
示例
The boy broke the glass.
The glass was broken by the boy.
从主动语态变为被动语态
1.主语 介词by 宾语
2.谓语 加be,并变为过去分词
3.宾语 主语
二、常见语态转换
（一）一般现在时和一般过去时的被动语态。
引入练习1。请将下列主动语态变成被动语态
1.Lucy bought some fruit.
Some fruit _____ ______ _____ Lucy.
2.Uncle Wang waters the flowers every day.
The flowers ___ _______ ____ Uncle Wang every day.
3.Did they build the bridge in 1998?
____ the bridge _____ in 1998?
4.When did Lu Xun write these books?
When _____these books _______ ____ Lu Xun?
5.The farmers don’t grow apples on the farm.
Apples _____ _____ on the farm.
6.They didn’t clean the classroom yesterday.
The classroom _______ ________ yesterday.
小结：
1、被动语态的转换，在be+过去分词中，确定_____ 是关键，_______永不变。