can calculate
Verbo regular: calculate - calculated- calculated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can calculate
you can calculate
she can calculate
we can calculate
you can calculate
they can calculate 	I can be calculating
you can be calculating
she can be calculating
we can be calculating
you can be calculating
they can be calculating	I can have calculated
you can have calculated
she can have calculated
we can have calculated
you can have calculated
they can have calculated	I can have been calculating
you can have been calculating
she can have been calculating
we can have been calculating
you can have been calculating
they can have been calculating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot calculate
you cannot calculate
she cannot calculate
we cannot calculate
you cannot calculate
they cannot calculate 	I cannot be calculating
you cannot be calculating
she cannot be calculating
we cannot be calculating
you cannot be calculating
they cannot be calculating	I cannot have calculated
you cannot have calculated
she cannot have calculated
we cannot have calculated
you cannot have calculated
they cannot have calculated	I cannot have been calculating
you cannot have been calculating
she cannot have been calculating
we cannot have been calculating
you cannot have been calculating
they cannot have been calculating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I calculate?
can you calculate?
can she calculate?
can we calculate?
can you calculate?
can they calculate? 	can I be calculating?
can you be calculating?
can she be calculating?
can we be calculating?
can you be calculating?
can they be calculating? 	can I have calculated?
can you have calculated?
can she have calculated?
can we have calculated?
can you have calculated?
can they have calculated? 	can I have been calculating?
can you have been calculating?
can she have been calculating?
can we have been calculating?
can you have been calculating?
can they have been calculating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not calculate?
can you not calculate?
can she not calculate?
can we not calculate?
can you not calculate?
can they not calculate? 	can I not be calculating?
can you not be calculating?
can she not be calculating?
can we not be calculating?
can you not be calculating?
can they not be calculating? 	can I not have calculated?
can you not have calculated?
can she not have calculated?
can we not have calculated?
can you not have calculated?
can they not have calculated? 	can I not have been calculating?
can you not have been calculating?
can she not have been calculating?
can we not have been calculating?
can you not have been calculating?
can they not have been calculating?