1）be good with意為“靈巧的；與……相處得好”.例如：
She is good with her hands.
她手巧.
He is very good with the children.
他與這些孩子處得很好.
2）be good to意為“對……友好”.例如：
My friend was good to me when I was ill.
我生病時我的朋友對我關(guān)懷備至.
3）be good for意為 “對……有好處”.例如：
Eating more vegetables is good for your health.
多吃蔬菜對你的健康有好處.