countable nouns- things you can count
FEW- almost none/negative
I have few oranges left.
- almost none, less than expected ( negative feeling)
A FEW- some/ positive
I have a few oranges for snacks
some, enough ( positive feeling)
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uncountable nouns- water/ sand/time
LITTLE- almost none, negative
There is little water here.
almost none, less than needed ( negative feeling)
A LITTLE- some/positive
There is a little water to drink.
some, enough ( positive feeling).