被动语态有 宾语么?The classroom was cleaned (by us/students).My homework has been finished.Many trees were planted on the hill yesterday.被动语态里面的动词,应该都是及物动词,既然是及物动词,一般后面都是要跟宾语的,但在被动语态的句子中 看到,动词后面要么,不跟宾语,要么是跟一个by 短语（引出动作执行者）.是不是被动语态中,尽管是及物动词,但后面不需要跟宾语啊?我知道被动语态的主语,放在主动语态里面,是做动词的宾语.这样的用法,是不是可以当作固定用法来记忆了.
问题描述：
被动语态有 宾语么?
The classroom was cleaned (by us/students).
My homework has been finished.
Many trees were planted on the hill yesterday.
被动语态里面的动词,应该都是及物动词,既然是及物动词,一般后面都是要跟宾语的,
但在被动语态的句子中 看到,动词后面要么,不跟宾语,要么是跟一个by 短语（引出动作执行者）.
是不是被动语态中,尽管是及物动词,但后面不需要跟宾语啊?
我知道被动语态的主语,放在主动语态里面,是做动词的宾语.
这样的用法,是不是可以当作固定用法来记忆了.
答
被动语态本身就是将主动句里的宾语提前为主语，后面自然不用跟宾语啦。
答
The classroom was cleaned (by us/students
被动语态结构
主语 the classroom
谓语 was cleaned
主位结构
后面加BY... 就变成了主谓+主补结构
答
以你第一句话为例 The classroom was cleaned.主动句子是 Someone cleaned the classroom.可见 clean 宾语是 classroom 所以在被动语态中 主语就是 谓语的宾语 宾语不是说在谓语后面的就是宾语 谓语的作用对象 就是...