06/02/2026
One of the most important comma rules I teach students is using commas with FANBOYS (coordinating conjunctions).
While I teach all seven, I spend the most time on AND, BUT, OR, and SO because those are the conjunctions students use most often.
More importantly, I want students to notice what's happening on BOTH sides of the conjunction.
Example:
“Billy studied all week, but he still felt nervous before the test.”
Both sides contain a complete thought with a subject and a verb.
Once students learn to spot complete thoughts, commas start making a lot more sense — and run-on sentences become much easier to avoid.