Grammar Occasions

Hi all, There seems to be some confusion about what I mean by "grammar occasions." Here's what I've said already to a couple of you: Well, for instance, I used to coach. When I was Jim, the soccer coach, I often said everything twice, everything twice. Way to go, way to go. All right, all right. Mark up, mark up! Etc. etc. And my usage was much more casual on the field than in the classroom. Similarly, when I'm on a construction site, at rehearsal, or whatever, my usage and grammar are different than when I'm in the classroom. Even minicourse is different. I've had students in the past talk about "code shifting" between home and school. I've had "skate-rats" talk about their usage and grammar in that arena. Surfers. Does that help?