it's+adj.+of sb.to do与it's +adj.+for sb.to do 的区别

如果形容词可以用来修饰人的性格就用of,如果不能或是人和物都可以就用for.
it's very kind/ honest/ friendly/stupid of you to help me.
it's important/ good / difficult for you to help me.
right不是用来修饰人的性格呀,是应该用fo