Can be singular or plural: an apple, two apples
No plural form: water, money, information, advice
| Expression | Countable | Uncountable |
|---|---|---|
| much / many | many books | much water |
| some / any | some apples / any apples | some milk / any milk |
| a few / a little | a few friends | a little time |
| a lot of / lots of | a lot of people | a lot of money |
| Article | Use | Example |
|---|---|---|
| a / an | First mention; one of many | I saw a film. She's an engineer. |
| the | Second mention; unique; specific | The film was great. The sun rises in the east. |
| no article | General ideas; uncountable / plural nouns in general | Water is essential. I love music. |