Some nouns change the spelling form when they are plural. Here are some examples:
one woman – two women
one man – two men
one goose – two geese
one foot – two feet
one tooth – two teeth
one child – two children
one knife – two knives
one wife — two wives
one leaf – two leaves
one ox – two oxen
one mouse – two mice
Certain nouns change spelling and form when becoming plural.
It’s your turn. Can you fill in the blank of this sentence with a plural noun? Mom asked for a knife, but I’m not sure which of the ________ is the one she wants. Did you figure it out? Good for you!