The book is of great benefit to students.中间为什么要加个of,起什么作用?

the book is of great help的同义句 The book is of great benefit to students.中间为什么要加个of,起什么作用? The book is of great value.求翻译,of是什么用法? the book is of great value里面 of是否可以省略 和后面的great 是固定搭配吗 The book is of great ( ),A.uselessB.usefulC.useD.used顺便说一下正确答案的理由 英语翻译As the Book of Changes says,Great is the Positive; far−reaching is the Negative.翻译的原话 To make a child love book from the very beginning is of great help.中的of可以省略吗? This book is of great v____ to beginners. 根据意思缺词填空（英语）The book is of great _____(价值）to beginners. The United Kingdom is made ,up of Great Britain and Northern Island.This book cost me 50 yuan.改为 The book is of great value.--can be enjoyed unless you digest it.A.nothing B.Anything The Great Wall is the ()of China What is the price of the book? The book is _____ great value.It is well worth_______ twice.A.of,reading B.of,to be read C.with,reading D.with,to be read While the internet is of great help. 翻译The matter is of great importance. The book is a b_____ of knowledge. He is the a_______ of this book