I could sigh you could sigh she could sigh we could sigh you could sigh they could sigh
Forme en V-ing
I could be sighing you could be sighing she could be sighing we could be sighing you could be sighing they could be sighing
Perfect
I could have sighed you could have sighed she could have sighed we could have sighed you could have sighed they could have sighed
Perfect en V-ing
I could have been sighing you could have been sighing she could have been sighing we could have been sighing you could have been sighing they could have been sighing
Négation
Forme simple
I could not sigh you could not sigh she could not sigh we could not sigh you could not sigh they could not sigh
Forme en V-ing
I could not be sighing you could not be sighing she could not be sighing we could not be sighing you could not be sighing they could not be sighing
Perfect
I could not have sighed you could not have sighed she could not have sighed we could not have sighed you could not have sighed they could not have sighed
Perfect en V-ing
I could not have been sighing you could not have been sighing she could not have been sighing we could not have been sighing you could not have been sighing they could not have been sighing
Forme interrogative
Forme simple
could I sigh? could you sigh? could she sigh? could we sigh? could you sigh? could they sigh?
Forme en V-ing
could I be sighing? could you be sighing? could she be sighing? could we be sighing? could you be sighing? could they be sighing?
Perfect
could I have sighed? could you have sighed? could she have sighed? could we have sighed? could you have sighed? could they have sighed?
Perfect en V-ing
could I have been sighing? could you have been sighing? could she have been sighing? could we have been sighing? could you have been sighing? could they have been sighing?
Forme interro-négative
Forme simple
could I not sigh? could you not sigh? could she not sigh? could we not sigh? could you not sigh? could they not sigh?
Forme en V-ing
could I not be sighing? could you not be sighing? could she not be sighing? could we not be sighing? could you not be sighing? could they not be sighing?
Perfect
could I not have sighed? could you not have sighed? could she not have sighed? could we not have sighed? could you not have sighed? could they not have sighed?
Perfect en V-ing
could I not have been sighing? could you not have been sighing? could she not have been sighing? could we not have been sighing? could you not have been sighing? could they not have been sighing?