Singular ownerPlural owner ending in s – write the plural form, then an apostrophe
One cat’s dish
One hen’s eggs
One dog’s legs
One bus’s stop
One sloth’s branch
One frog’s pond
Grandma’s book
One boss’s desk
Tess’s lunch
One actress’s film
The Red Cross’s shop
Tom Smith’s shed
The potato’s skin
The shelf’s books
The oasis’s trees
Two cats’ dishes
Three hens’ eggs
The lost dogs’ shelter
Three buses’ stop
Two sloths’ branches
Ten frogs’ pond
Both her grandmas’ stories
Several bosses’ companies
Both Tesses’ lunches
Four actresses’ films
The high crosses’ shadows
The Smiths’ shed (the Smith family’s shed)
The potatoes’ skins
The shelves’ books
The oases’ trees
Singular ownerIrregular plural owner which doesn’t end in ‘s’
A child’s nap time
A woman’s hat
The fish’s colour
One sheep’s wool
The tooth’s enamel
The mouse’s tail
The larva’s markings
All the children’s nap time
The women’s hats
The shoal of fish’s colour
A flock of sheep’s wool
The teeth’s enamel
The mice’s tails
The larvae’s markings