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