对的:What nationality are you?
What nationality is he?
这是问某人是什么国籍的句子.是对其陈述句I'm/He's Chinese/English/Japanese.等中的
Chinese/English/Japanese提问变成的问句.
也可用:What is your/his nationality
因此下面两句错了:
What nationality is his?(his错了,应为he; 或在his后加上 nationality )
What nationality are he /his?(同上:his错了,应为he .另外,are错了,he应同is 连用)