1.比较few和a few：两者均表示复数意义，few表示数量很少或几乎没有，强调“少”，含有否定意义：a few表示数量虽然少但毕竟还有，强调“有”，含有肯定意义。比较：
His theory is very difficult,and few people understandit.他的理论很深奥，没有几个能懂。
His theory is very difficult,but a few people understandit.他的理论很深奥，但是有些人懂。
2.一般说来，在only,still,quite,not等词之后通常用带有不定冠词的a few,而在very,some,the,no,so,too等词之后通常用不带冠词的few。如：
Only a few students passed the exam.只有几个学生考及格。
Very few people understand what he said.几乎没什么人懂他的话。
【注】可说very few或a very few,但不能说very a few。
3.其比较级和最高级分别为fewer,fewest。如；
Who has the fewest mistakes?谁的错误最少?
You ought to smoke fewer cigarettes and drink less beer.你应该少抽烟，少喝啤酒。
4.用作形容词，其后可直接跟名词，无需用of,但是若其后名词之前有限定词修饰或者是代词或从句等，则必须要用介词of。
Few of them know this.他们当中没几个人知道这一点。
A few of these books are mine.这些书当中有几本是我的。
5.a man[person]of few words(沉默寡言的人)是习词，其中的few前不用冠词或其它限定词。
