Nouns: Countable, Uncountable & Plurals

Basic · Nouns & Articles

Nouns come in two families. Countable nouns are things you can count one by one: one apple, two apples, three apples. Uncountable nouns are things we see as a mass or a whole, so we cannot put a number directly in front: water, rice, money, information.

This matters because it decides which words you can use around the noun (a/an, many/much, few/little) and whether the verb is singular or plural.

How to build it

Countable: a book / two books · Uncountable: (some) water — never "a water", never "waters"

Rules & examples

  1. Countable nouns have a singular and a plural form.

    You can count them, so they can be one or many.

    • one book → two books
    • a child → three children
  2. Most plurals add -s or -es.

    Add -es after s, x, z, ch, sh sounds.

    • cat → cats
    • box → boxes
    • watch → watches
  3. Consonant + y becomes -ies; some -f/-fe become -ves.

    A small spelling shift for these endings.

    • baby → babies
    • city → cities
    • knife → knives
    • leaf → leaves
  4. Some nouns are irregular — you must memorize them.

    They do not follow the -s rule at all.

    • man → men
    • woman → women
    • foot → feet
    • tooth → teeth
    • person → people
    • mouse → mice
  5. Uncountable nouns have no plural and take a singular verb.

    Think of them as one big mass, not separate pieces.

    • water, rice, money, advice, information, furniture, luggage
    • The information is useful. (not: informations are)
  6. To count an uncountable noun, add a "unit" word.

    Use "a piece of / a glass of / a bit of" to make it countable.

    • a piece of advice
    • two glasses of water
    • a bit of luck

Tips to remember

  • Common uncountables that surprise learners: advice, information, furniture, luggage, news, homework, bread, money.
  • If you can say "a" or a number before it, it is countable. If not, add a unit word: "a piece of furniture".

Common mistakes

  • ✗ I need some informations. → ✓ I need some information. — "Information" is uncountable, so it has no plural -s.
  • ✗ She gave me many advices. → ✓ She gave me a lot of advice. — "Advice" is uncountable; use "a lot of" and no plural.