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