It seemed more pleasant to listen to. 不定式做什么成分?

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Itseemedmorepleasanttolistento.不定式做什么成分?Itseemedmorepleasanttolistento.不定式做什么成分?Itseemedmorepleasant

It seemed more pleasant to listen to. 不定式做什么成分?
It seemed more pleasant to listen to. 不定式做什么成分?

It seemed more pleasant to listen to. 不定式做什么成分?
在此动词不定式作主语,用it作形式主语 .
在很多情况下,人们通常用it作为形式上的主语,而把不定式移到谓语之后,使句子结构显得平稳一些.例如:
It's rude to turn your back to your teacher and refuse to answer.背对着老师,拒绝回答问题是不礼貌的.
It is impossible to learn a foreign language without making painstaking effort.想不下苦功就能学会外语是不可能的.
It seemed a pity to have wasted so much time.浪费了这么多时间,真是遗憾.

形式主语啊

这是状语从句,it作形式主语,不定式才是句子的真正主语,但这里 to lisent to 作状语。