can serve
Verbo regular: serve - served- served

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can serve
you can serve
she can serve
we can serve
you can serve
they can serve 	I can be serving
you can be serving
she can be serving
we can be serving
you can be serving
they can be serving	I can have served
you can have served
she can have served
we can have served
you can have served
they can have served	I can have been serving
you can have been serving
she can have been serving
we can have been serving
you can have been serving
they can have been serving	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot serve
you cannot serve
she cannot serve
we cannot serve
you cannot serve
they cannot serve 	I cannot be serving
you cannot be serving
she cannot be serving
we cannot be serving
you cannot be serving
they cannot be serving	I cannot have served
you cannot have served
she cannot have served
we cannot have served
you cannot have served
they cannot have served	I cannot have been serving
you cannot have been serving
she cannot have been serving
we cannot have been serving
you cannot have been serving
they cannot have been serving	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I serve?
can you serve?
can she serve?
can we serve?
can you serve?
can they serve? 	can I be serving?
can you be serving?
can she be serving?
can we be serving?
can you be serving?
can they be serving? 	can I have served?
can you have served?
can she have served?
can we have served?
can you have served?
can they have served? 	can I have been serving?
can you have been serving?
can she have been serving?
can we have been serving?
can you have been serving?
can they have been serving? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not serve?
can you not serve?
can she not serve?
can we not serve?
can you not serve?
can they not serve? 	can I not be serving?
can you not be serving?
can she not be serving?
can we not be serving?
can you not be serving?
can they not be serving? 	can I not have served?
can you not have served?
can she not have served?
can we not have served?
can you not have served?
can they not have served? 	can I not have been serving?
can you not have been serving?
can she not have been serving?
can we not have been serving?
can you not have been serving?
can they not have been serving?