This dictionary will prove(to be of some use) to you in your English study.的解析和翻译

of of +部分抽象名词,=be +该名词的形容词形式.如：be of use= be usefulbe of interest=be interestingbe of value=be valuablebe of help=be helpfulbe of importance=be importantof 后面可以加表示程度的限定词,...