I could belch you could belch he could belch we could belch you could belch they could belch
Forme en V-ing
I could be belching you could be belching he could be belching we could be belching you could be belching they could be belching
Perfect
I could have belched you could have belched he could have belched we could have belched you could have belched they could have belched
Perfect en V-ing
I could have been belching you could have been belching he could have been belching we could have been belching you could have been belching they could have been belching
Négation
Forme simple
I couldn't belch you couldn't belch he couldn't belch we couldn't belch you couldn't belch they couldn't belch
Forme en V-ing
I couldn't be belching you couldn't be belching he couldn't be belching we couldn't be belching you couldn't be belching they couldn't be belching
Perfect
I couldn't have belched you couldn't have belched he couldn't have belched we couldn't have belched you couldn't have belched they couldn't have belched
Perfect en V-ing
I couldn't have been belching you couldn't have been belching he couldn't have been belching we couldn't have been belching you couldn't have been belching they couldn't have been belching
Forme interrogative
Forme simple
could I belch? could you belch? could he belch? could we belch? could you belch? could they belch?
Forme en V-ing
could I be belching? could you be belching? could he be belching? could we be belching? could you be belching? could they be belching?
Perfect
could I have belched? could you have belched? could he have belched? could we have belched? could you have belched? could they have belched?
Perfect en V-ing
could I have been belching? could you have been belching? could he have been belching? could we have been belching? could you have been belching? could they have been belching?
Forme interro-négative
Forme simple
couldn't I belch? couldn't you belch? couldn't he belch? couldn't we belch? couldn't you belch? couldn't they belch?
Forme en V-ing
couldn't I be belching? couldn't you be belching? couldn't he be belching? couldn't we be belching? couldn't you be belching? couldn't they be belching?
Perfect
couldn't I have belched? couldn't you have belched? couldn't he have belched? couldn't we have belched? couldn't you have belched? couldn't they have belched?
Perfect en V-ing
couldn't I have been belching? couldn't you have been belching? couldn't he have been belching? couldn't we have been belching? couldn't you have been belching? couldn't they have been belching?