The design for the room was of the fancy style popular in those days . of the fancy style… days在句子中作表语 ※ “be of +名词(词组)”表示主语的某种形状或特征 ※ be of a(n) / the / the same “属于, 归于” be of the size / weight / height / age / colour / kind… eg. All of the boys in the class are of the same age . ※ be of + 抽象名词 = be + 该词的形容词 eg. be of great value = be very valuable importance important use useful help helpful eg. I am pleased to have been of help to you .=very helpful ※ popular in those days 是形容词修饰the fancy style .相当于定语从句, 通常放在名词之后 = which is popular in those days . 1 本文来源：https://www.wddqw.com/doc/74d863c6a4e9856a561252d380eb6294dc882299.html