I could burp you could burp she could burp we could burp you could burp they could burp
Forme en 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
Perfect
I could have burped you could have burped she could have burped we could have burped you could have burped they could have burped
Perfect en 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
Négation
Forme 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
Forme en 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
Perfect
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
Perfect en 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
Forme interrogative
Forme simple
could I burp? could you burp? could she burp? could we burp? could you burp? could they burp?
Forme en 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?
Perfect
could I have burped? could you have burped? could she have burped? could we have burped? could you have burped? could they have burped?
Perfect en 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?
Forme interro-négative
Forme 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?
Forme en 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?
Perfect
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?
Perfect en 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?