when do you use commas before conjunctions
Commas before conjunctions (e.g., and, or, but). When a word like and, or, and but (called conjunctions) joins two standalone sentences, you should put a comma before it.(The real name for a standalone sentence within a longer sentence is independent clause .).Words like and, or, and but are known as conjunctions.SE A SEMICOLON. When indepedent clauses containing commas are merged together using a conjunction, it is possible to use a semicolon instead of a comma before the conjunction. However, this is quite an outdated practice in modern writing.