Regular plurals of nouns are formed by adding -s, -es, or -ies to the singular (e.g., girls, viruses, duties). Irregular plurals also often follow a pattern, originating sometimes in the parent language or rules of older forms of English (children, criteria, oases, geese, mice, indices).

Regular Nouns Nouns where we add an -S to make them plural. There are no other changes to the noun. The example nouns are car, dog, book, house, and apple. Nouns ending in S, CH, SH, X, Z Nouns with these endings and where we need to add -ES to make them plural. The example nouns are bus, match, dish, box, and quiz.

Below is a list of common English nouns with irregular plural endings: Example: a man – two men a woman – two women a child – two children a mouse – two mice a foot – two feet a person – two people