NOUNS
plural forms
-s, -ss, -sh, -ch, -tch, -z, -x
bus
buses
fox
foxes
-y -ies
city
cities
baby
babies
*
toy
toys
-f / -fe -ves
leaf
leaves
knife
knives
wife
wives
thief
thieves
-f / -fe -s
roof
roofs
chief
chiefs
-o -es
tomato
tomatoes
hero
heroes
*
photo
photos
piano
pianos
But:
men
a man [mæn]
a woman [ˈwʊmən]
a child
women [ˈwɪmɪn]
children
a tooth
teeth
a foot
feet
a mouse
mice
But:
geese
a goose
a louse
an ox
lice
oxen
a person
people
Also:
one deer — two deer
one fish — two fish
one sheep — two sheep