be good to“對(duì)……友好/和藹”,其后接表示人或相應(yīng)的名詞.
be good for“對(duì)……有益”,其后接表示人或事物的名詞.
be good at“善于”、“擅長(zhǎng)”.例：
The young should be good to the old.年輕人應(yīng)該孝順老人.
Doing morning exercises is good for our health.做早操對(duì)我們的健康有益.
I am good at playing table tennis.我擅長(zhǎng)打乒乓球.
be good for 和be good to不能互換,因?yàn)橐馑疾煌?
be bad for 和be harmful to意思相近,可以替換.
反義詞可以在上面詞組BE后加NOT就OK了.