There are definite rules for its use, but many writers use commas subjectively, leading to disagreement (and acrimony) whenever writers or editors discuss this modest punctuation mark.
This week, I’m tackling another punctuation mark—the apostrophe. The rules for the apostrophe are much more definite, but they are frequently misapplied. So misunderstanding often ensues when it comes to the apostrophe.
Here are some rules for its use.
1. An apostrophe is used to show the possessive case of proper nouns.
2. If a singular or plural word does not end in s, add ‘s to form the possessive.
3. If a proper noun or name ends in a silent s, z, or x, add an ‘s
4. Do not use ‘s with possessive pronouns: his, hers, ours, its, yours, theirs, whose.