Many experts think pigs are ____ to train than dogs or cats.为什么不用more easily,而是easier?不是副词修饰动词吗?小女子英语差,求教!

问题描述:

Many experts think pigs are ____ to train than dogs or cats.为什么不用more easily,而是easier?
不是副词修饰动词吗?小女子英语差,求教!

be 后面要使用形容词,而不是副词.