I could butterfly you could butterfly she could butterfly we could butterfly you could butterfly they could butterfly
Forme en V-ing
I could be butterflying you could be butterflying she could be butterflying we could be butterflying you could be butterflying they could be butterflying
Perfect
I could have butterflied you could have butterflied she could have butterflied we could have butterflied you could have butterflied they could have butterflied
Perfect en V-ing
I could have been butterflying you could have been butterflying she could have been butterflying we could have been butterflying you could have been butterflying they could have been butterflying
Négation
Forme simple
I couldn't butterfly you couldn't butterfly she couldn't butterfly we couldn't butterfly you couldn't butterfly they couldn't butterfly
Forme en V-ing
I couldn't be butterflying you couldn't be butterflying she couldn't be butterflying we couldn't be butterflying you couldn't be butterflying they couldn't be butterflying
Perfect
I couldn't have butterflied you couldn't have butterflied she couldn't have butterflied we couldn't have butterflied you couldn't have butterflied they couldn't have butterflied
Perfect en V-ing
I couldn't have been butterflying you couldn't have been butterflying she couldn't have been butterflying we couldn't have been butterflying you couldn't have been butterflying they couldn't have been butterflying
Forme interrogative
Forme simple
could I butterfly? could you butterfly? could she butterfly? could we butterfly? could you butterfly? could they butterfly?
Forme en V-ing
could I be butterflying? could you be butterflying? could she be butterflying? could we be butterflying? could you be butterflying? could they be butterflying?
Perfect
could I have butterflied? could you have butterflied? could she have butterflied? could we have butterflied? could you have butterflied? could they have butterflied?
Perfect en V-ing
could I have been butterflying? could you have been butterflying? could she have been butterflying? could we have been butterflying? could you have been butterflying? could they have been butterflying?
Forme interro-négative
Forme simple
couldn't I butterfly? couldn't you butterfly? couldn't she butterfly? couldn't we butterfly? couldn't you butterfly? couldn't they butterfly?
Forme en V-ing
couldn't I be butterflying? couldn't you be butterflying? couldn't she be butterflying? couldn't we be butterflying? couldn't you be butterflying? couldn't they be butterflying?
Perfect
couldn't I have butterflied? couldn't you have butterflied? couldn't she have butterflied? couldn't we have butterflied? couldn't you have butterflied? couldn't they have butterflied?
Perfect en V-ing
couldn't I have been butterflying? couldn't you have been butterflying? couldn't she have been butterflying? couldn't we have been butterflying? couldn't you have been butterflying? couldn't they have been butterflying?