I can brief you can brief she can brief we can brief you can brief they can brief
Forma com V-ing
I can be briefing you can be briefing she can be briefing we can be briefing you can be briefing they can be briefing
Perfeito
I can have briefed you can have briefed she can have briefed we can have briefed you can have briefed they can have briefed
Perfeito com V-ing
I can have been briefing you can have been briefing she can have been briefing we can have been briefing you can have been briefing they can have been briefing
Negação
Forma simple
I cannot brief you cannot brief she cannot brief we cannot brief you cannot brief they cannot brief
Forma com V-ing
I cannot be briefing you cannot be briefing she cannot be briefing we cannot be briefing you cannot be briefing they cannot be briefing
Perfeito
I cannot have briefed you cannot have briefed she cannot have briefed we cannot have briefed you cannot have briefed they cannot have briefed
Perfeito com V-ing
I cannot have been briefing you cannot have been briefing she cannot have been briefing we cannot have been briefing you cannot have been briefing they cannot have been briefing
Forma interrogativa
Forma simple
can I brief? can you brief? can she brief? can we brief? can you brief? can they brief?
Forma com V-ing
can I be briefing? can you be briefing? can she be briefing? can we be briefing? can you be briefing? can they be briefing?
Perfeito
can I have briefed? can you have briefed? can she have briefed? can we have briefed? can you have briefed? can they have briefed?
Perfeito com V-ing
can I have been briefing? can you have been briefing? can she have been briefing? can we have been briefing? can you have been briefing? can they have been briefing?
Forma interro-Negação
Forma simple
can I not brief? can you not brief? can she not brief? can we not brief? can you not brief? can they not brief?
Forma com V-ing
can I not be briefing? can you not be briefing? can she not be briefing? can we not be briefing? can you not be briefing? can they not be briefing?
Perfeito
can I not have briefed? can you not have briefed? can she not have briefed? can we not have briefed? can you not have briefed? can they not have briefed?
Perfeito com V-ing
can I not have been briefing? can you not have been briefing? can she not have been briefing? can we not have been briefing? can you not have been briefing? can they not have been briefing?