Khan Academy
Khan Academy: Irregular Plural Nouns Base Plurals
Some nouns look the same whether they're singular or plural - these nouns are called 'base plurals', and we'll demonstrate how they behave the only way I know how... by using sheep!
Khan Academy
Khan Academy: Irregular Plural Nouns the Mutant Plurals
English has seven words that behave very strangely when you change them from the singular to the plural. These are called THE MUTANT PLURALS of English. They're super cool.
Khan Academy
Khan Academy: Irregular Plural Nouns F to Ves
The plural of 'dog' is 'dogs', but what is the plural of 'leaf'? Khan Academy's resident grammarian explains.
Khan Academy
Khan Academy: Irregular Plural Nouns Words That End in En
The plural of 'whale' is 'whales', but what's the plural of 'child'? David, Khan Academy's resident grammarian, explains.