a little 和a few 是肯定
little 和few 是表否定
记忆这两组短语有个技巧
a few 和few 谁长?
a few 长,那么长的就是多啦,few 短,就是少啦,几乎没有
a little 和little 也这么记
关键是你要搞懂,那一组是修饰可数名词的