- We use an apostrophe (') to form a singular possessive noun.
- Add an apostrophe and s to singular nouns.
- To form a plural possessive noun, add only an apostrophe to a plural noun that ends in s.
- Add an apostrophe and s to plural nouns that do not end with an s.
The class' artwork was put on display in the hallway.
Cindy's school bag was too heavy to carry.
The children's jackets were all hung nicely.