why should I be cut off like this?

题目

why should I be cut off like this?
why是疑问代词吗?
like this做什么成分
should be cut 是谓语 那off呢?

答案

why是疑问代词,like this是状语,后面这个句子用的是被动语态,be是谓语 ,should是情态动词 ,cut off是真正的动作“与外界隔绝”