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