The plural noun is generally formed by adding -s to the singular.Cow (singular), cows (plural)
Boy, boys
Girl, girls
Book, books
Tree, trees
Dog, dogs
Pen, pensNouns ending in -s, -sh, -ch or -x form the plural by adding -es to the singular.Class (singular), classes (plural)
Brush, brushes
Kiss, kisses
Match, matches
Dish, dishesMost nouns ending in -o also form their plural by adding -es to the singular.Mango (singular), mangoes (plural)
Hero, heroes
Potato, potatoes
Volcano, volcanoesNote that a few nouns ending in -o merely add -s.Dynamo (singular), dynamos (plural)
Piano, pianos
Photo, photos
Logo, logos
Kilo, kilosNouns ending in a consonant + y form their plural by changing -y into -i and adding -es.Baby (singular), babies (plural)
Lady, ladies
City, cities
Story, storiesThe following nouns ending in -f or -fe form their plural by changing -f or -fe into v and adding -es.Thief (singular), thieves (plural)
Wife, wives
Leaf, leaves
Half, halves
Self, selves
Calf, calves
Loaf, loaves
Knife, knives
Elf, elves
Wolf, wolves
Shelf, shelvesMost other nouns ending in -f or -fe add -s.Chief (singular), chiefs
Gulf, gulfs
Safe, safes
Proof, proofsA few nouns form their plural by making some changes to inside vowels.Foot (singular), feet (plural)
Man, men
Woman, women
Tooth, teeth
Mouse, mice
Goose, geese
