是why does the boy very happy对还是why is the boy ve Why is the boy putting a recor...

the boy does not feel happy why\u600e\u4e48\u56de\u7b54\uff1f

because he looks like blue/upset \u56e0\u4e3a\u4ed6\u770b\u8d77\u6765\u8138\u8272\u4e0d\u597d

has sold The boy is happy because he has sold out all the newspapers. \u56e0\u5356\u5b8c\u6240\u6709\u7684\u62a5\u7eb8\u800c\u9ad8\u5174

Why is the boy very happy?这句是对的。is 是系动词 be；而does是组动词。
这句话的陈述句 表示是 ：The boy is very happy。所以疑问句用 why is the boy very happy？
如果加入一个动词，例如 ：feel 。陈述句变成：The boy feels very happy。feels 对应助动词do，疑问句变成 ：Why does the boy feel very happy?

Why is the boy very happy对。
这句话的主体其实是一个简单的主系表结构，即主语（the boy）+系动词（is）+表语（happy）。

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选is ，因为这句话的核心词是boy is very happy，happy是形容词，应该用be动词来做谓语动词

是why is the boy very happy对

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