It is sutpid of her not to follow your advice.
her not to follow your advice 整个做主语, 那 is stupid of 后面不是没有内容了吗,这个of还起什么作用?
It is stupid of her not to follow your advice.
= She is stupid not to follow your advice.
不定式为表语形容词的方面状语。
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这是It is +adj.+ of sb. + to do sth.句式。关于此类问题答疑网上曾有过热烈的讨论:
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