2. Use an apostrophe in the possessive form of a noun to indicate ownership. To show ownership, add apostrophe + s to the end of a word, with one exception: To show ownership with a plural noun already ending in s add only the apostrophe.
2. Use an apostrophe in the possessive form of a noun to indicate ownership. To show ownership, add apostrophe + s to the end of a word, with one exception: To show ownership with a plural noun already ending in s add only the apostrophe.