What nationality is she?和What is her nationality?

What is her nationality? 正确
What nationality is she 应改为 What nationality is ( hers )?追问

那为什么What color is it是对的

追答

What colour is it. 的 it 是宾格,
It is white. / It is black.
而 she 却是主格
What nationality is hers? hers : [名词性物主代词]
Her nationality is Chinese.
Her nationality is British.

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What nationality is she

What nationality is she?
是正确的。
倒是后面你改了个啥...

后者好些追答

都是对的

两种不同的表达方式