what is dog怎么回答 what is dog. 这句话每个词的词性

what,s this\u600e\u6837\u56de\u7b54

What's this ?
It's a / an +\u53ef\u6570\u540d\u8bcd\u5355\u6570\u3002
What's this ?
It's a dog .
It's an apple .

what\u662fpron\uff08\u4ee3\u8bcd\uff09\uff0cis\u662fv\uff08\u52a8\u8bcd\uff09\uff0cdog\u662fn\uff08\u540d\u8bcd\uff09

文法错误

What is a dog?
狗是什么

It is an animal.
它是种动物。

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