[quote=“puiwaihin”]As you have already discovered, it is for the same reason we say “on Monday” but “in February.” It’s a fossilized set phrase that you have to use as is.
But you’re not alone. This is a very common error among native speakers, and many people will unconsciously use the wrong form even when they know the right one.[/quote]
Now now, being rather prescriptive there. To me, this is sort of like some people saying “She is smarter than me” instead the properest of proper “She is smarter than I.” I was brought up in the old school and the latter is what is burned into my brain as “correct,” but quite a lot of native speakers of all major dialects say the former. If students ask me which is “correct,” I’ll tell them that both are fine, but that “smarter than I” is more proper. In teaching, I think it’s important that students get the idea that there are grades of correctness and that correctness depends on situation and genre. I can’t stand it when I ask a Chinese teacher if it is considered “correct” to say something the way I’ve heard hundreds of native speakers say it, and the teacher denies that one could even say it that way just because the prescriptive grammar that he or she teaches says it is “incorrect.” Now Miltownkid, as for your original question about “on accident,” don’t you fucking know that that is just plain wrong? My god man, do you have any education? You should be embarrassed for even asking.