Nouns: countable and uncountable

NOUNS: COUNTABLE AND UNCOUNTABLE

Theory
Exercises:
countable/ uncountable nouns	exercise 1	exercise 2
countable/ uncountable nouns + quantifiers	exercise 1	exercise 2
expressions to count uncountable nouns	exercise 1	exercise 2
expressions to count uncountable nouns	exercise 3	exercise 4