In the museum,I saw many beautiful dresses ( ) of silk and cotton.

题目

In the museum,I saw many beautiful dresses ( ) of silk and cotton.
答案是made,可是不是有一个词组be made of吗》为什么不用were made?

答案

注意句子结构,已经有谓语saw了 ,就不能再有were了 ,这里的made是做定语修饰dresses的,或者这里可以改为定语从句修饰,即：I saw many beautifuf dresses （which were made of）silk and cotton.