The classroom is cleaned (by the students)every day.括号里面的做什么成分啊是状语么?

问题描述:

The classroom is cleaned (by the students)every day.括号里面的做什么成分啊是状语么?
括号里面的做什么成分啊是状语么?
如果是状语,那应该是什么状语啊?

这是个被动语态的句子,括号里面的内容是“主动语态的主语”,也是“被动语态的宾语”.