问题描述：
英语句子主语
increasing it yould be an eggctive way of reducing wmissiongs as well as easing congestion.请问句子的主语是什么?increasing是句子的什么成分?为什么要用it来替代increasing,不直接用increasing?这是种什么用法?我没见过,请知道的老师详解
increasing it yould be an eggctive way of reducing wmissiongs as well as easing congestion.请问句子的主语是什么?increasing是句子的什么成分?为什么要用it来替代increasing,不直接用increasing?这是种什么用法?我没见过,请知道的老师详解
问题解答：
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