【问】 in business与on business有何区别?

【答】 in business是指“经商”、“从商”、“在商界”，而on business是指“因公”、“办理事务”。请对比下列实例：

1. He is no longer in business. (Palmer)

他不再经商了。

2. A businessman is a man who works in business. (EED)

商人即在商界工作的人。

3. Are you going on business or for pleasure? (NAECD)

你到这里来是出差，还是游玩?