Use 'few' when you talk about a small number of things or people. It means not many but more than one. We often use it with plural nouns.
There are few apples on the table.
She has few friends at school.
'Few' can describe the small amount of something and can suggest that this small amount is less than expected or wanted. It is used with plural countable nouns.
Few people came to the party.
He made few mistakes in his work.
'A few' means some, a small number but enough. It shows a positive meaning, different from 'few' without 'a'. Use it with plural countable nouns.
I have a few books to read.
She bought a few oranges from the market.
'Few' can act as a pronoun to replace a small number of plural nouns. It means not many and often shows that the number is less than expected.
Few have completed the test on time.
Few understand the problem clearly.
In technical or scientific language, 'few' describes a small number in data or samples. It often highlights that the number is low for analysis or observation.
The study included few participants aged over 80.
Few cases of the disease are reported annually.
With extra stress, 'few' is used to say there are almost no people or things. This meaning shows a very small or nearly zero amount.
Few people—if any—attended the meeting.
He has few chances left to win.
In the phrase 'few and far between,' 'few' means very rare or uncommon. It describes things that do not happen often or are hard to find.
Opportunities like this are few and far between.
Good days at work are few and far between.
