a few/ few
(1)a few, few 用来修饰可数名词。
(2)a few “有一些”，表示肯定概念，few 几乎没有，表示否定意义。
[例] The man has been here for many years, so he has a few friends.
这个人在这里住了很多年了，他有一些朋友。
I am a new comer here, so I have few friends here.
我刚来到这里，所以我在这里没有几个朋友。
