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