can sever
Verbo regular: sever - severed- severed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can sever
you can sever
she can sever
we can sever
you can sever
they can sever 	I can be severing
you can be severing
she can be severing
we can be severing
you can be severing
they can be severing	I can have severed
you can have severed
she can have severed
we can have severed
you can have severed
they can have severed	I can have been severing
you can have been severing
she can have been severing
we can have been severing
you can have been severing
they can have been severing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot sever
you cannot sever
she cannot sever
we cannot sever
you cannot sever
they cannot sever 	I cannot be severing
you cannot be severing
she cannot be severing
we cannot be severing
you cannot be severing
they cannot be severing	I cannot have severed
you cannot have severed
she cannot have severed
we cannot have severed
you cannot have severed
they cannot have severed	I cannot have been severing
you cannot have been severing
she cannot have been severing
we cannot have been severing
you cannot have been severing
they cannot have been severing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I sever?
can you sever?
can she sever?
can we sever?
can you sever?
can they sever? 	can I be severing?
can you be severing?
can she be severing?
can we be severing?
can you be severing?
can they be severing? 	can I have severed?
can you have severed?
can she have severed?
can we have severed?
can you have severed?
can they have severed? 	can I have been severing?
can you have been severing?
can she have been severing?
can we have been severing?
can you have been severing?
can they have been severing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not sever?
can you not sever?
can she not sever?
can we not sever?
can you not sever?
can they not sever? 	can I not be severing?
can you not be severing?
can she not be severing?
can we not be severing?
can you not be severing?
can they not be severing? 	can I not have severed?
can you not have severed?
can she not have severed?
can we not have severed?
can you not have severed?
can they not have severed? 	can I not have been severing?
can you not have been severing?
can she not have been severing?
can we not have been severing?
can you not have been severing?
can they not have been severing?