Countable and uncountable nouns

Abstract

It's important to distinguish between countable and uncountable nouns in English because their usage is different in regards to both determiners and verbs.

Countable nouns are for things we can count using numbers. They have a singular and a plural form. The singular form can use the determiner "a" or "an". If you want to ask about the quantity of a countable noun, you ask "How many?" combined with the plural countable noun.