be of 抽象名词结构有哪些例子
例句： The wallet is of importance 1. "(be)+of+名词"结构中的名词是抽象名词时,相当于其中名词所对应的形容词的意思，说明被修饰词具有某种特征或属性。 常用的名词有use/importance/help/value/interest/quality/service/benefit/necessity等。 例如: I don't want to hear what you are saying. It is of no...