it's of+抽象名词的结构
问题描述：
it's of+抽象名词的结构
答
it's of+抽象名词相当于it's +形容词.(be)of+抽象名词表示人或物的特征.Of常接value,use,help,importance,benefit,interest等抽象名词.等于其同根形容词valuable,useful,helpful,important,beneficial,interesting,...