Rule 1. Use commas to separate words and word groups in a simple series of three or more Rule 1 example: My estate goes to my husband, son, daughter-in-law, and nephew.
Rule 2. Use a comma to separate two adjectives when the order of the adjectives is
Rule 1 example: My estate goes to my husband, son, daughter-in-law, and nephew.
Rule 2. Use a comma to separate two adjectives when the order of the adjectives is