a few不可数，a few修饰可数名词复数，表示肯定、少许、少数。little，a little后面接不可数名词。a few，a little表示肯定，意思是有一些、有一点。few，little表示否定，意思是没有一些、没有一点。
a few用法例句
1.I made a few phone calls.
我打了几个电话。
2.I have a few, but not many.
我有几个，可是不多。
3.I stayed there a few days longer.
我在那里多住了几天。
4.A few books have been lost from the library.
图书馆丢失了几本书。
5.We had a few drinks afterwards.
后来我们喝了几杯。
few例句
1.Few people understand the difference.
很少有人了解这个差别。
2.There seem to be fewer tourists around this year.
今年来访的旅游者似乎少了。
3.Very few students learn Latin now.
现在学拉丁语的学生少得很。
4.We've had a few replies.
我们已得到了一些答复。
5.I need a few things from the store.
我需要从商店买些东西。