求对比这两个what!①Please tell me what are the dicisive causes of h
求对比这两个what!
①Please tell me what are the dicisive causes of his success.
②Please tell me what you are doing?
第二句就不能写成Please tell me what are you doing?了对么?
第一句what书作主语,第二句的what作宾语么?
第①句可以写成Please tell me what the dicisive causes of his success are.