This matter is of no significance.
这件事无关紧要。
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 important, be of significance→be significant等。它们之间可以相互转换， 因此，以上各例句可转换为：
They are very helpful to learners of English.
This book is very valuable to students of history.
This meeting is very important.
This medicine is useless.
This matter is insignificant.
2. be of +名词，还可用来说明句子主语在度量，大小，颜色，类别等方面的特征。这类名词有 colour, age, size, height, weight, shape, type， kind等。在这类名词前常用different, all, the same， this, that, a(n) + 形容词等词来修饰或说明。如：
Coins may be of different sizes, weights, shapes, and of different metals.
货币可能在大小、重量、形状和铸造的金属方面都有所不同。 |
