They have all been put to shame by a boy who,我想知道为什么加 all 和 by 说是被动语态,

题目

They have all been put to shame by a boy who,我想知道为什么加 all 和 by 说是被动语态,

答案

被动语态跟all和by无关,all只是一个副词,by只是引出被动句中的执行者,被动语态的部分是have been put to shame,be put to shame明显是被动,句中是用了现在完成时