GRAMMAR - Countable and Uncountable Nouns

A noun can be countable or uncountable. Countable nouns can be "counted", they have a singular and plural form .

For example:

A book, two books, three books .....
An apple, two apples, three apples ....

Uncountable nouns (also called mass nouns or noncount nouns) cannot be counted, they are not separate objects. This means you cannot make them plural by adding -s, because they only have a singular form. It also means that they do not take a/an or a number in front of them.

For example:

Water
Work
Information
Coffee
Sand



http://www.learnenglish.de/grammar/noununcount.htm

Grammar Reminder:
"How much ....?" = uncountable nouns
For example: "How much coffee do you drink?"
"How many ....?" = countable nouns
For example: "How many cups of coffee do you drink?"

- Countable Nouns
In questions:
We use how many with plural countable nouns: "How many newspapers do you read every day?" - "How many Euros have you got?"
- Uncountable Nouns
We use how much with uncountable nouns:
"How much paper is in the printer?" - "How much money have you got?"

- Countable
There are some: people, cups, books, newspapers, chairs, shoes, Euros.
- Uncountable
There is some: money, traffic, paper, time, coffee, food.

- Countable
There aren't any: people, cups, books, newspapers, chairs, shoes, Euros.
- Uncountable
There isn't any: money, traffic, paper, time, coffee, food.

- Countable
There are a few: people, cups, books, newspapers, chairs, shoes, Euros.
- Uncountable
There is a little: money, traffic, paper, time, coffee, food.

- Countable
There aren't many: people, cups, books, newspapers, chairs, shoes.
- Uncountable
There isn't much: money, traffic, paper, time, coffee, food.


http://learn-english-online.org/Lesson38/Lesson38.htm