英语-a few ，few，a little，little有什么区别？

a few,few 后面一般跟可数名词
前者肯定(有几个),后者否定(没几个)
there are a few students in the class 教室里有几个学生
there are few students in the class 教室里没几个学生(表否定)
a little,little 后面一般跟不可数名词
前者肯定(有几个),后者否定(没几个)
a little snow in the yard 院子里有点雪
little snow in the yard 院子里没多少雪

few, a few, little, a little
虽然都表示“少”，但
（1）few, a few是可数的, little, a little是不可数的。
（2）a few, a little含肯定意味，few, little含否定意味。这里所谓的“肯定意味”和“否定意味”应该这样来理解：同样是半杯水，口渴者会认为：There is little water in the glass. 而不口渴的人则会认为：There is a little water in the glass.

一：
1．few修饰可数名词复数。
2．few (= not many; hardly any)含否定意义；a few (= some; several; a small
number of) 含肯定意义。
3． not a few = no few = quite a few = a good few = many。
4． 当 few受 every, last, past, next, some, very等词所修饰时，表示肯定意义，few之前不再有冠词。如：
In the last few minutes, he checked up his paper again.
It took us some few days to repair the machine.
They are very few in number.
There w