If you have a good grasp of apostrophes, you probably notice that a lot of other people don’t. You could be forgiven for rolling your eyes at sentences like “The dog wagged it’s tail,” which ...

Possessive pronoun must agree in gender and number with the noun in the phrase they replace. Each possessive pronoun must agree in gender (masculine or feminine) and number (singular or plural) with ...

The apostrophe can be used to show who things belong to. If an item belongs to something, the apostrophe shows us who, by sitting at the end of the noun. If that noun doesn't end in s, the apostrophe ...

On October 22nd, at 2:50 P.M., @APStylebook tweeted a series of guidelines about how to punctuate possessives of nouns that end in “S”: “For possessives of plural nouns ending in s, add only an ...

Sign up for the daily CJR newsletter. A student recently asked why she had been corrected when she wrote “The teacher’s union voted to strike.” That’s easy: A ...