I can fever you can fever he can fever we can fever you can fever they can fever
Forma con V-ing
I can be fevering you can be fevering he can be fevering we can be fevering you can be fevering they can be fevering
Perfecto
I can have fevered you can have fevered he can have fevered we can have fevered you can have fevered they can have fevered
Perfecto con V-ing
I can have been fevering you can have been fevering he can have been fevering we can have been fevering you can have been fevering they can have been fevering
Negación
Forma simple
I can't fever you can't fever he can't fever we can't fever you can't fever they can't fever
Forma con V-ing
I can't be fevering you can't be fevering he can't be fevering we can't be fevering you can't be fevering they can't be fevering
Perfecto
I can't have fevered you can't have fevered he can't have fevered we can't have fevered you can't have fevered they can't have fevered
Perfecto con V-ing
I can't have been fevering you can't have been fevering he can't have been fevering we can't have been fevering you can't have been fevering they can't have been fevering
Forma interrogativa
Forma simple
can I fever? can you fever? can he fever? can we fever? can you fever? can they fever?
Forma con V-ing
can I be fevering? can you be fevering? can he be fevering? can we be fevering? can you be fevering? can they be fevering?
Perfecto
can I have fevered? can you have fevered? can he have fevered? can we have fevered? can you have fevered? can they have fevered?
Perfecto con V-ing
can I have been fevering? can you have been fevering? can he have been fevering? can we have been fevering? can you have been fevering? can they have been fevering?
Forma interro-negativa
Forma simple
can't I fever? can't you fever? can't he fever? can't we fever? can't you fever? can't they fever?
Forma con V-ing
can't I be fevering? can't you be fevering? can't he be fevering? can't we be fevering? can't you be fevering? can't they be fevering?
Perfecto
can't I have fevered? can't you have fevered? can't he have fevered? can't we have fevered? can't you have fevered? can't they have fevered?
Perfecto con V-ing
can't I have been fevering? can't you have been fevering? can't he have been fevering? can't we have been fevering? can't you have been fevering? can't they have been fevering?