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