don't I tighten? don't you tighten? doesn't she tighten? don't we tighten? don't you tighten? don't they tighten?
Presente continuo
am I not tightening? aren't you tightening? isn't she tightening? aren't we tightening? aren't you tightening? aren't they tightening?
Pretérito
didn't I tighten? didn't you tighten? didn't she tighten? didn't we tighten? didn't you tighten? didn't they tighten?
Pretérito continuo
wasn't I tightening? weren't you tightening? wasn't she tightening? weren't we tightening? weren't you tightening? weren't they tightening?
Presente perfecto
haven't I tightened? haven't you tightened? hasn't she tightened? haven't we tightened? haven't you tightened? haven't they tightened?
Presente perfecto continuo
haven't I been tightening? haven't you been tightening? hasn't she been tightening? haven't we been tightening? haven't you been tightening? haven't they been tightening?
Pluscuamperfecto
hadn't I tightened? hadn't you tightened? hadn't she tightened? hadn't we tightened? hadn't you tightened? hadn't they tightened?
Pluscuamperfecto continuo
hadn't I been tightening? hadn't you been tightening? hadn't she been tightening? hadn't we been tightening? hadn't you been tightening? hadn't they been tightening?
Futuro simple
won't I tighten? won't you tighten? won't she tighten? won't we tighten? won't you tighten? won't they tighten?
Futuro continuo
won't I be tightening? won't you be tightening? won't she be tightening? won't we be tightening? won't you be tightening? won't they be tightening?
Futuro perfecto
won't I have tightened? won't you have tightened? won't she have tightened? won't we have tightened? won't you have tightened? won't they have tightened?
Futuro perfecto contínuo
won't I have been tightening? won't you have been tightening? won't she have been tightening? won't we have been tightening? won't you have been tightening? won't they have been tightening?
Condicional
Presente
wouldn't I tighten? wouldn't you tighten? wouldn't she tighten? wouldn't we tighten? wouldn't you tighten? wouldn't they tighten?
Presente continuo
wouldn't I be tightening? wouldn't you be tightening? wouldn't she be tightening? wouldn't we be tightening? wouldn't you be tightening? wouldn't they be tightening?
Passado
wouldn't I have tightened? wouldn't you have tightened? wouldn't she have tightened? wouldn't we have tightened? wouldn't you have tightened? wouldn't they have tightened?
Passado continuo
wouldn't I have been tightening? wouldn't you have been tightening? wouldn't she have been tightening? wouldn't we have been tightening? wouldn't you have been tightening? wouldn't they have been tightening?