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