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Many students study English.(主动语态)
English is studied by many students.
(被动语态)
They make shoes in that factory.
主语+及物动词+宾语
Shoes are made (by them) in that factory.
by many students.
1.Many students study English.
English
is studied
2.They buy bags in that store.
Bags
are bought
by them
in that store.
主动语态转化为被动语态的三部曲:
1.主动结构宾语变为被动结构主语。
2.谓语动词变为被动语态。
3.主动结构主语变为介词by的宾语,组成介词短语,放在被动结构中谓语动词之后。在动词执行者无须说明或强调时，by短语可以省略。
1. He waters the flowers．
The flowers are watered by him.
一般现在时的被动语态：
am/is/are +过去分词
被动语态的结构
不同的时态有不同被动语态结构
They play football on Sunday.
Lucy does the homework in the evening.
They often use computers in class.
We make these machines in Beijing.
Football is played by them on Sunday.