原文：
OK, Danny. I know you didn't expect to have me around, but I think I can be of some help to you.
笔记：
be of+抽象名词”,表示具有、具备
It is of great importance for college students to master a foreign language.
大学生掌握一门外语是非常重要的。
“be of+集合名词或其它类型的名词”,表归属关系
The army and the people are of one family
军民是一家。
“be of+物质名词”表示主语是“用某种材料构成或制作的”
Our building was of bricks.
我们这栋楼是砖建的。
be of+(表示种类、颜色、年龄、形状、价格等）名词,表示主语的特征
Several of the stamps were of the unusual kind.
这些邮票中有些是特别款的。
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