在“be of + 抽象名词”结构中，其意义就相当于“be + 与该抽象名词同词根的形容 词”。如：be of value→be valuable、be of help→be helpful、be of use→be useful、be of importance→be …
High quality example sentences with “be of no use” in context from reliable sources - Ludwig is the linguistic search engine that helps you to write better in English
BE (OF) NO USE translate: 没有用;没有帮助;不可能. Learn more in the Cambridge English-Chinese simplified Dictionary.
If something or someone is of use, they are useful. If they are no use, they are not at all useful.
It is no use doing sth 是一个常用句型，意思为：做...是没用的，相似的还有It is no good doing sth. 第二个句型中的of no use 属于of +抽象名词结构，相当于not useful.
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