I could burp you could burp she could burp we could burp you could burp they could burp
Forma com V-ing
I could be burping you could be burping she could be burping we could be burping you could be burping they could be burping
Perfeito
I could have burped you could have burped she could have burped we could have burped you could have burped they could have burped
Perfeito com V-ing
I could have been burping you could have been burping she could have been burping we could have been burping you could have been burping they could have been burping
Negação
Forma simple
I couldn't burp you couldn't burp she couldn't burp we couldn't burp you couldn't burp they couldn't burp
Forma com V-ing
I couldn't be burping you couldn't be burping she couldn't be burping we couldn't be burping you couldn't be burping they couldn't be burping
Perfeito
I couldn't have burped you couldn't have burped she couldn't have burped we couldn't have burped you couldn't have burped they couldn't have burped
Perfeito com V-ing
I couldn't have been burping you couldn't have been burping she couldn't have been burping we couldn't have been burping you couldn't have been burping they couldn't have been burping
Forma interrogativa
Forma simple
could I burp? could you burp? could she burp? could we burp? could you burp? could they burp?
Forma com V-ing
could I be burping? could you be burping? could she be burping? could we be burping? could you be burping? could they be burping?
Perfeito
could I have burped? could you have burped? could she have burped? could we have burped? could you have burped? could they have burped?
Perfeito com V-ing
could I have been burping? could you have been burping? could she have been burping? could we have been burping? could you have been burping? could they have been burping?
Forma interro-Negação
Forma simple
couldn't I burp? couldn't you burp? couldn't she burp? couldn't we burp? couldn't you burp? couldn't they burp?
Forma com V-ing
couldn't I be burping? couldn't you be burping? couldn't she be burping? couldn't we be burping? couldn't you be burping? couldn't they be burping?
Perfeito
couldn't I have burped? couldn't you have burped? couldn't she have burped? couldn't we have burped? couldn't you have burped? couldn't they have burped?
Perfeito com V-ing
couldn't I have been burping? couldn't you have been burping? couldn't she have been burping? couldn't we have been burping? couldn't you have been burping? couldn't they have been burping?