A noun that names one thing is a singular noun. When a noun names more than one thing, it is a plural noun. We usually add -s to a noun to make it plural and show that it is more than one.
one cat – two cats
one barn – two barns
one dog – two dogs
one book – two books
Add -s to a noun to make it plural – to make it mean more than one,
It’s your turn. Add -s to the noun that should go into the second sentence: I have one brother. My friend Sarah has two ________. Did you make the noun brother into a plural by adding -s? Good for you!