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