Countable Nouns

The major division of English nouns is into "countable " and "uncountable".

Countable nouns are easy to recognize. They are things that we can count. For example: "pen". We can count pens. We can have one, two, three or more pens. Here are some more countable nouns:

• dog, cat, animal, man, person
• bottle, box, litre
• coin, note, dollar
• cup, plate, fork
• table, chair, suitcase, bag

Countable nouns can be singular or plural:

• My  dog is playing.
• My  dogs are hungry.

We can use the indefinite article a/an  with countable nouns:

• A  dog is an animal.

When a countable noun is singular, we must use a word like a/the/my/this  with it:

• I want an  orange. (not  I want orange.)
• Where is my  bottle? (not  Where is bottle?)

When a countable noun is plural, we can use it alone:

• I like oranges.
• Bottles can break.

We can use some and any  with countable nouns:

• I've got some dollars.
• Have you got any pens?

We can use a few and many  with countable nouns:

• I've got a few dollars.
• I haven't got many pens.

sources : Original Link