A: Jane asked me how to solve that problem yesterday.

　　Jane昨天问我如何解决那个问题。

　　B: You gave her suggestion.

　　你给她建议了。

　　A: Yeah.

　　是的。

　　B: Don’t do such a thing again.

　　下次别干这种事情了。

　　A: What is wrong?

　　怎么啦?

　　B: You just carry coals to Newcastle. She already has her own idea. She just pretended to ask you.

　　你是在做徒劳无益的事情。她已经有了自己的见解，她只不过是假装问问你罢了。