My favorite color is red and green.如果是错的,那为什么 My bag is red and green是对的?

题目

My favorite color is red and green.如果是错的,那为什么 My bag is red and green是对的?
我记得老师说过,英语的is/are的判断 只看主语啊

答案

主谓一致,老师说的没错,你这两个句子都是对的.
如果用are,那相应的color也要变成复数形式：
My favorite colors are red and green.或者
Red and green are my favorite colors.