6 a) Read the box below.

The box contains information about countable and uncountable nouns. * Countable nouns (what we can count): * `a/an` + countable nouns in the singular: `a banana` * `some` + countable nouns in the plural: `four/some bananas` * Uncountable nouns (what we can't count): * `some milk` (NOT: `a milk`) * Some nouns only have a plural form: `clothes, shorts, trousers`