Determiner or Adjective[change]
Few and its inflections, fewer and fewest are intermediate between determiners and adjectives. The meaning is very determiner-like. They also function in sentences that don't work with adjectives. Consider the following examples:
- So few people have come.
- *So big people have come.
- I can't believe how few people seem to have come.
- *I can't believe how big people seem to have come.
They can also occur in partative constructions.
- one/three/which/few of them is/are...
- * big of the is/are
On the other hand, they have many properties typical of adjectives: they inflect, can co-occur with articles, can be modified by very and can occur as predicate complements,
- Those who can do so are few.
- Those who can do so are great.
- * Those who can do so are this.
I'll follow the lead of The Cambridge Grammar of the English Language (Huddleston & Pullum, eds., 2002), which concludes that they are determiners.