Quantifiers are words that express amounts without expressing specific numbers. They answer the questions “how many?” and “how much?” Quantifiers can be used with both countable and uncountable nouns.

Countable nouns are those which can be counted with specific numbers. Nouns that cannot be counted in this way are uncountable nouns. For example, English is a noun, yet there is no such thing as one English or five Englishes.

Quantifiers with countable and uncountable nouns take the place of numbers and instead express an approximate amount. Examples of quantifiers include:
many
(a) few
much
(a) little
plenty
several
a couple
most

Some quantifiers can be used with both countable and uncountable nouns. “Enough” and “plenty” are examples of these. You can have enough time and enough pencils or plenty of time and plenty of pencils.

Certain quantifiers only make sense with countable nouns. “Many” and “a few,” for example, only work with words that can be counted. You can have many or a few pencils but not many or a few times.

“Little” and “a little” are examples of quantifiers that can only be used with uncountable nouns. You can have little or a little time, but not little or a little pencils.