I wanted to appear friendly and approachable but I think I gave the converse impression.

我想好、平易人些,却发觉给人的印象恰恰相反。

It is possible, of course, that the converse of this theory may also be true.

当然该原理的逆命题也有可能成立。

I conversed with her on a certain problem.

我与她讨论某一问题。

He's willing to converse with anyone about the quotations on the stock market.

他愿和任何人谈论股市行情。