talk about 中about 是介词，后面接动名词是很正常的事。又如：

We were talking about renting aflat. 我们在讨论租一套公寓的事。

We were involved in talks about buying another company. 我们参与了关于收购另一家公奇的会谈。

She had hardly arrived when she started talking about leaving again. 她刚到就开始讲要再离开的事。

Jerry dropped hints that he and Julie were talking about getting married. 杰里露出口风说他同朱莉已谈婚论嫁了。