it's (easilier) to take the underground than to take the bus.

问题描述:

it's (easilier) to take the underground than to take the bus.
此句对吗,因为副词修饰动词,所以easy变easily,又因为比较级,变成easilier?

不对
应该用形容词,it's . 形容词作表语,就是“...(事)是怎么样”的意思,比较级变成 easier