Countable and Uncountable Nouns
Countable nouns are things we can count, like apples. Uncountable nouns are things we can't count, like air.
Countable nouns
Countable nouns are used to name things we can count.
One apple
Two dogs
Three children
Four boys, etc.
Countable nouns have a singular and a plural form.
A dog
Two dogs
Some dogs
An apple
The apples
Many apples
Remember!
The article 'A' is used with a noun that begins with a consonant, and the article 'An' is used with a noun that begins with a vowel sound.
Examples:
An apple
An orange
An hour
Uncountable nouns
Uncountable nouns are used to name things we can not count:
Money (we can count dollars, euros, but not money)
Sugar
Water
Luck, etc
Uncountable nouns do not usually take the indefinite article 'A' or 'An'. They are often used without an article and they do not usually have a plural form.
Examples:
(some) money
(some) electricity
(some) fruit
Some words can be countable and uncountable, depending on what they refer to. For example, 'Hair'.
Paul has brown hair. (This refers to his hair in general and is uncountable)
There is a hair in my dinner. (This refers to individual hairs, and is countable)