What his last name?哪错了

问题描述:

What his last name?哪错了

what is his last name?

What 【is】 his last name?
在句子中,his last name 是名词主语,is 是系动词作谓语,what 是宾语。
变成 陈述语序 就是 his last name is what.

没有谓语动词
What【is】 his last name?

这样不对,应是what did his name?