Apostrophe Rules–A Quick Guide | Grammarly
www.grammarly.com › blog › apostropheSep 23, 2022 · They vary a little bit, depending on what type of noun you are making into a possessive. Here are the rules of thumb: For most singular nouns, add apostrophe+s: The dog’s leash. The writer’s desk. The planet’s atmosphere. For most plural nouns, add only an apostrophe: The dogs’ leashes (multiple dogs)