plural

1. Regular
General rule: singular + S: girl - girls boy - boys Nouns ending in -S, -SS, -SH, -CH, -X get -ES: box - boxes bus - buses Some nouns ending in -O behind a consonant get -ES: potato - potatoes tomato - tomatoes Nouns ending in -Y behind a consonant change -Y into -IES: lady - ladies baby - babies Some nouns ending in -F or -FE change -F(E) into -VES: knife - knives wife - wives
2. Irregular: learn them by heart!
man foot woman tooth goose mouse louse child penny	men feet women teeth geese mice lice children pence
3. Always singular, always plural
Some nouns are always plural: clothes, jeans, trousers, shorts, people, police, glasses, scissors, mathematics Some nouns (abstract, materials, kinds of food) are always singular: bread, tea, cheese, jam, soup, soap, snow, cotton, wood, water, information, advice, knowledge, furniture Some nouns have the same form for singular and plural: Names of kind of fish: cod, herring, salmon, trout, ... Names of some animals: deer, sheep, swine, ...