a few、few / a little、litter
a few few 后面只能接复数名词
a few days, few boys
a little litter 后面只能接不可数名词
a little water, little money
a few a litter 表示肯定,表示有一些
few litter 表示否点, 表示很少,几乎没有
我们只能说:only a little 或 only a few, 而不能说: only few (X)
但为了强调否定意义,我们可以说 very few或 very little