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