it is exciting/excited to这有什么区别啊, 快啊,明天就要考英语了

it 做主语,如果是指代无生命的东西的话,后面肯定是exciting “使人兴奋的,令人激动的
使人兴奋的,令人激动的
He concentrated his pupils and declared the exciting news.
他把他的学生集中在一起,宣布了这条令人兴奋的消息.
Skiing is more exciting than skating.
滑雪比滑冰更激动人心.
excited 一般是指某件事使主语（人） 兴奋,激动
He was getting excited just thinking about the trip.
一想到那次旅行他就兴奋.
I was quite excited to hear that.
听到那事我非常激动.

如果说exciting的话，是令人激动的。
excited，是我自己感到激动。
所以你可以说 it is exciting to read a book. 看书很让人激动。
This book is exciting. 这本书很让人激动。
如果你说 i am excited to go swimming. 我感到好激动要去...