Perhaps this book will prove to be of use to you in your studies的语法

问题描述:

Perhaps this book will prove to be of use to you in your studies的语法

意思是
可能这本书对你的学习有帮助
第三人称book做主语,prove to be 做谓语,可能证明.
of use 就是useful的变形,in your studies 在你的学习中