Grammar - plural

study ex 1 ex 2 ex 3 ex 4 ex 5
 
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, ...