be nice to是對......好；

be nice for為......而變好；

be nice of是......好，形容某個人很好。

be nice to 的用法：be nice to sb. 對某人好例：She is nice to everyone. 她對每個人都好。

be nice to do sth. 做……是好事例：It is nice to see someone dressing differently. 看到有人穿著不拘一格固然是好事。

be nice of 的用法：be nice of sb. to do sth. 某人做某事怎麼樣（形容某個人很好）。例：It is nice of you to ask me to your party tonight. 今晚你能邀請我參加你的晚會真是太好了。

Be good for sb./sth.（即for後面可接人也可以接物）意思是：對......有好處/有益。eg:Doing more exercises is good for you(your health) 多做點運動對你（你的身體）有好處（有益）。