怎样区分little与few的用法?

few, little, a few, a little的用法
1) (a) few + 可数名词, (a) little + 不可数名词
2) a few / a little 为肯定含义，还有一点
3) few / little 为否定含义，没有多少了。
He has a few friends. 他有几个朋友。
He has few friends. 他几乎没有朋友。
We still have a little time. 我们还有点时间。
There is little time left.几乎没剩下什么时间了。
4) 固定搭配:
only a few (=few) not a few (=many) quite a few (=many)
many a (=many)
Many books were sold.
Many a book was sold.
卖出了许多书。

few, little, a few, a little的用法
1) (a) few + 可数名词, (a) little + 不可数名词
2) a few / a little 为肯定含义，还有一点
3) few / little 为否定含义，没有多少了。
He has a few friends. 他有几个朋友。
He has few friends. 他几乎没有朋友。
We still have a little time. 我们还有点时间。
There is little time left.几乎没剩下什么时间了。
4) 固定搭配:
only a few (=few) not a few (=many) quite a few (=many)
many a (=many)
Many books were sold.
Many a book was sold.
卖出了许多书。

little表示没有，是否定，修饰不可数名词
a few是几个，少数，修饰可数名词的复数形式few则有否定意

little用于不可数的，few用于可数的。