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