He doesn't study hard改为附加疑问句

He doesn't study hard改为附加疑问句
He doesn't study hard改为附加疑问句

He doesn't study hard改为附加疑问句
He doesn't study hard,does he?

He doesn't study hard，does he？

What color is his hair?

does he 因为原句中doesn't是否定词，因此附加疑问句应为肯定
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