I can hammer you can hammer he can hammer we can hammer you can hammer they can hammer
Forma con V-ing
I can be hammering you can be hammering he can be hammering we can be hammering you can be hammering they can be hammering
Perfecto
I can have hammered you can have hammered he can have hammered we can have hammered you can have hammered they can have hammered
Perfecto con V-ing
I can have been hammering you can have been hammering he can have been hammering we can have been hammering you can have been hammering they can have been hammering
Negación
Forma simple
I can't hammer you can't hammer he can't hammer we can't hammer you can't hammer they can't hammer
Forma con V-ing
I can't be hammering you can't be hammering he can't be hammering we can't be hammering you can't be hammering they can't be hammering
Perfecto
I can't have hammered you can't have hammered he can't have hammered we can't have hammered you can't have hammered they can't have hammered
Perfecto con V-ing
I can't have been hammering you can't have been hammering he can't have been hammering we can't have been hammering you can't have been hammering they can't have been hammering
Forma interrogativa
Forma simple
can I hammer? can you hammer? can he hammer? can we hammer? can you hammer? can they hammer?
Forma con V-ing
can I be hammering? can you be hammering? can he be hammering? can we be hammering? can you be hammering? can they be hammering?
Perfecto
can I have hammered? can you have hammered? can he have hammered? can we have hammered? can you have hammered? can they have hammered?
Perfecto con V-ing
can I have been hammering? can you have been hammering? can he have been hammering? can we have been hammering? can you have been hammering? can they have been hammering?
Forma interro-negativa
Forma simple
can't I hammer? can't you hammer? can't he hammer? can't we hammer? can't you hammer? can't they hammer?
Forma con V-ing
can't I be hammering? can't you be hammering? can't he be hammering? can't we be hammering? can't you be hammering? can't they be hammering?
Perfecto
can't I have hammered? can't you have hammered? can't he have hammered? can't we have hammered? can't you have hammered? can't they have hammered?
Perfecto con V-ing
can't I have been hammering? can't you have been hammering? can't he have been hammering? can't we have been hammering? can't you have been hammering? can't they have been hammering?