don't I heat? don't you heat? doesn't he 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 he heating? aren't we heating? aren't you heating? aren't they heating?
Preterite
didn't I heat? didn't you heat? didn't he 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 he 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 he 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 he 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 he 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 he 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 he 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 he 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 he 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 he 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 he 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 he 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 he 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 he have been heating? wouldn't we have been heating? wouldn't you have been heating? wouldn't they have been heating?