Many centuries ago, I was a high school biology teacher. I guess the teacher in me never totally left. Here are some of my grammar pet peeves. Do you have any?
Using alot instead of a lot.
Confusing to, too, and two (or just using the #2).
Using you instead of the word you.
Using confirmation when you mean conformation (referring to horse's body structure).
Confusing your (meaning belonging to) and you're (you are).
Confusing aloud and allowed.
What are your personal grammar pet peeves?