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