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