do some good / do sb good to have a useful effect有用/对某人有用:•She works for a small charity where she feels she can do some good.她在一家小慈善机构里工作，她觉得在那里能做点有用的事情。•I'll talk to him but I don't think it will do any good.我会找他谈谈，但我觉得不会有用。•A bit more exercise would do you good.稍微多锻炼锻炼对你有好处。⇒do more harm than good at HARM¹ (1) |