be of + 表示形状、年龄、颜色、大小、种类等名词，在句中作
表语或定语。例如：
His father is of the same age as his mother. 他的父亲和他的母亲同龄。（=His father is as old as his mother. ）
Her cap is of the same shape as mine. 她的便帽式样和我的相同。
The desks are of blue colour. 书桌都是蓝色的。
The film star's beauty is of Italian type. 这位影星的美是意大利型的。
