All the evening dresses were beautiful.为什么要用were

题目

All the evening dresses were beautiful.为什么要用were

答案

因为 dresses是复数要用复数形式 are 或者 were
但是这里用were过去式可能是语境的问题,没有上下文从单句里面是不能解释为什么的
如果还有问题可以找我~