don't I teach? don't you teach? doesn't she teach? don't we teach? don't you teach? don't they teach?
Present continuous
am I not teaching? aren't you teaching? isn't she teaching? aren't we teaching? aren't you teaching? aren't they teaching?
Preterite
didn't I teach? didn't you teach? didn't she teach? didn't we teach? didn't you teach? didn't they teach?
Preterite continuous
wasn't I teaching? weren't you teaching? wasn't she teaching? weren't we teaching? weren't you teaching? weren't they teaching?
Present perfect
haven't I taught? haven't you taught? hasn't she taught? haven't we taught? haven't you taught? haven't they taught?
Present perfect continuous
haven't I been teaching? haven't you been teaching? hasn't she been teaching? haven't we been teaching? haven't you been teaching? haven't they been teaching?
Pluperfect
hadn't I taught? hadn't you taught? hadn't she taught? hadn't we taught? hadn't you taught? hadn't they taught?
Pluperfect continuous
hadn't I been teaching? hadn't you been teaching? hadn't she been teaching? hadn't we been teaching? hadn't you been teaching? hadn't they been teaching?
Future
won't I teach? won't you teach? won't she teach? won't we teach? won't you teach? won't they teach?
Future continuous
won't I be teaching? won't you be teaching? won't she be teaching? won't we be teaching? won't you be teaching? won't they be teaching?
Future perfect
won't I have taught? won't you have taught? won't she have taught? won't we have taught? won't you have taught? won't they have taught?
Future perfect continuous
won't I have been teaching? won't you have been teaching? won't she have been teaching? won't we have been teaching? won't you have been teaching? won't they have been teaching?
Conditional
Present
wouldn't I teach? wouldn't you teach? wouldn't she teach? wouldn't we teach? wouldn't you teach? wouldn't they teach?
Present continuous
wouldn't I be teaching? wouldn't you be teaching? wouldn't she be teaching? wouldn't we be teaching? wouldn't you be teaching? wouldn't they be teaching?
Past
wouldn't I have taught? wouldn't you have taught? wouldn't she have taught? wouldn't we have taught? wouldn't you have taught? wouldn't they have taught?
Past continuous
wouldn't I have been teaching? wouldn't you have been teaching? wouldn't she have been teaching? wouldn't we have been teaching? wouldn't you have been teaching? wouldn't they have been teaching?