表语从句中what与who的用法有啥区别?急He is ____is known as a hacker- he likes to show off on the Internet and attack websites.此处应该是what还是who?

表语从句中what与who的用法有啥区别?急He is ____is known as a hacker- he likes to show off on the Internet and attack websites.此处应该是what还是who? 表语从句在表语从句中,as.与as if的用法上的区别 whom与who在定语从句中用法的区别 定语从句中that,which,who,whose,where,why,what等词的用法与区别（详细）. which,what与who的用法有何区别 表语从句中引导词that和what有啥区别~ what which在表语从句中的用法区别,要例句 表语从句的用法 表语从句的用法 名词性从句 知识讲解 whoever与who的用法有何区别 名词性从句 知识讲解 whoever与who的用法有何区别 定语从句中who、whom、whose的用法有什么区别? 表语从句与状语从句的区别表语从句和状语从句有什么区别?如何区别它们?最好是言简意赅哦,不要百科上成段拉下来的THANKS~ 在定语从句中 the one what which as who whom where when 用法及区别 表语从句的用法是什么 宾语从句中,what和that的用法有什么区别? who/whoever,what/whatever,whom/whomever哪些能用于介词宾语从句?whom用在哪里?用在定语从句中,与who有何区别? （that which what where who whom whose） 从句的用法和区别