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