can fever
Verbo regular: fever - fevered- fevered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can fever
you can fever
he can fever
we can fever
you can fever
they can fever 	I can be fevering
you can be fevering
he can be fevering
we can be fevering
you can be fevering
they can be fevering	I can have fevered
you can have fevered
he can have fevered
we can have fevered
you can have fevered
they can have fevered	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 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can't fever
you can't fever
he can't fever
we can't fever
you can't fever
they can't fever 	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	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	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 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I fever?
can you fever?
can he fever?
can we fever?
can you fever?
can they fever? 	can I be fevering?
can you be fevering?
can he be fevering?
can we be fevering?
can you be fevering?
can they be fevering? 	can I have fevered?
can you have fevered?
can he have fevered?
can we have fevered?
can you have fevered?
can they have fevered? 	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 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can't I fever?
can't you fever?
can't he fever?
can't we fever?
can't you fever?
can't they fever? 	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? 	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? 	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?