it is no use (persuading) him because he will never change his mind.这里的动名词persuading他的逻辑主语是谁?求分析句子成分,为什么用动名词形式,不要用固定用法概括,

问题描述:

it is no use (persuading) him because he will never change his mind.这里的动名词
persuading他的逻辑主语是谁?求分析句子成分,为什么用动名词形式,不要用固定用法概括,