chat of与chat about的区别

特地查了一下牛津短语搭配词典：
PREP. ~ about a chat about his new job | ~ between a chat between Mr Blair and a journalist | ~ to/with I'll have a chat to John about it. a friendly chat with a neighbour
与牛津高阶英汉词典.
结果均未发现chat of,由此得出结论.
只有chat with sb. about sth.的说法,并无chat of的说法.

这就是 区分 of 和 about 就可以区分这个了。
of 和about均可表示 关于·······
但是 有一定的区别
of 表示 关于的 内容较宽泛，
about 的内容较详细。
所以 chat of 和chat about 都是 谈论·什么··
但是 of 较宽泛，
about较详细。