... is ...ed by ...

结构︰

主语＋be 动词＋过去分词＋by＋宾语…。

说明︰

将主动句改为被动句时，先将主动句的<主语>变成被动句的<宾语>，再将主动句的<及物动词>改成“be＋过去分词”，且须注意 be <动词>的时式要与主动句的<及物动词>时式相同，最后将主动句的<主语>变成被动句 by 的<宾语>。

The news is widely spread by them.
这一消息被他们广为传播。
Vegetables are needed every day by us.
蔬菜每天被我们所需要。
This letter was typed by Alice this morning.
这封信在今早被艾丽斯用打字机打过了。

 

 

 


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