talk为什么是不及物动

因为它必须和介词连用才能接宾语，故为不及物动词。

例如

Your doctors can help a great deal and you need to talk about it with them as a matter of urgency.

We had a long talk about her father， Tony， who was a friend of mine.关于她父亲托尼我们进行了一次长时间的交谈，托尼是我的一个朋友。