don't I tighten? don't you tighten? doesn't he tighten? don't we tighten? don't you tighten? don't they tighten?
Presente contínuo
am I not tightening? aren't you tightening? isn't he tightening? aren't we tightening? aren't you tightening? aren't they tightening?
Pretérito
didn't I tighten? didn't you tighten? didn't he tighten? didn't we tighten? didn't you tighten? didn't they tighten?
Preterito contínuo
wasn't I tightening? weren't you tightening? wasn't he tightening? weren't we tightening? weren't you tightening? weren't they tightening?
Presente perfeito
haven't I tightened? haven't you tightened? hasn't he tightened? haven't we tightened? haven't you tightened? haven't they tightened?
Presente perfeito contínuo
haven't I been tightening? haven't you been tightening? hasn't he been tightening? haven't we been tightening? haven't you been tightening? haven't they been tightening?
Mais perfeito
hadn't I tightened? hadn't you tightened? hadn't he tightened? hadn't we tightened? hadn't you tightened? hadn't they tightened?
Contínuo mais perfeito
hadn't I been tightening? hadn't you been tightening? hadn't he been tightening? hadn't we been tightening? hadn't you been tightening? hadn't they been tightening?
Futuro
won't I tighten? won't you tighten? won't he tighten? won't we tighten? won't you tighten? won't they tighten?
Futuro contínuo
won't I be tightening? won't you be tightening? won't he be tightening? won't we be tightening? won't you be tightening? won't they be tightening?
futuro perfeito
won't I have tightened? won't you have tightened? won't he have tightened? won't we have tightened? won't you have tightened? won't they have tightened?
futuro perfeito contínuo
won't I have been tightening? won't you have been tightening? won't he 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 he tighten? wouldn't we tighten? wouldn't you tighten? wouldn't they tighten?
Presente contínuo
wouldn't I be tightening? wouldn't you be tightening? wouldn't he 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 he have tightened? wouldn't we have tightened? wouldn't you have tightened? wouldn't they have tightened?
Passado contínuo
wouldn't I have been tightening? wouldn't you have been tightening? wouldn't he have been tightening? wouldn't we have been tightening? wouldn't you have been tightening? wouldn't they have been tightening?