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 cannot fever you cannot fever he cannot fever we cannot fever you cannot fever they cannot fever
Forma con V-ing
I cannot be fevering you cannot be fevering he cannot be fevering we cannot be fevering you cannot be fevering they cannot be fevering
Perfecto
I cannot have fevered you cannot have fevered he cannot have fevered we cannot have fevered you cannot have fevered they cannot have fevered
Perfecto con V-ing
I cannot have been fevering you cannot have been fevering he cannot have been fevering we cannot have been fevering you cannot have been fevering they cannot 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 I not fever? can you not fever? can he not fever? can we not fever? can you not fever? can they not fever?
Forma con V-ing
can I not be fevering? can you not be fevering? can he not be fevering? can we not be fevering? can you not be fevering? can they not be fevering?
Perfecto
can I not have fevered? can you not have fevered? can he not have fevered? can we not have fevered? can you not have fevered? can they not have fevered?
Perfecto con V-ing
can I not have been fevering? can you not have been fevering? can he not have been fevering? can we not have been fevering? can you not have been fevering? can they not have been fevering?