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