should spar
Verbo regular: spar - sparred- sparred

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should spar
you should spar
he should spar
we should spar
you should spar
they should spar 	I should be sparring
you should be sparring
he should be sparring
we should be sparring
you should be sparring
they should be sparring	I should have sparred
you should have sparred
he should have sparred
we should have sparred
you should have sparred
they should have sparred	I should have been sparring
you should have been sparring
he should have been sparring
we should have been sparring
you should have been sparring
they should have been sparring	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not spar
you should not spar
he should not spar
we should not spar
you should not spar
they should not spar 	I should not be sparring
you should not be sparring
he should not be sparring
we should not be sparring
you should not be sparring
they should not be sparring	I should not have sparred
you should not have sparred
he should not have sparred
we should not have sparred
you should not have sparred
they should not have sparred	I should not have been sparring
you should not have been sparring
he should not have been sparring
we should not have been sparring
you should not have been sparring
they should not have been sparring	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I spar?
should you spar?
should he spar?
should we spar?
should you spar?
should they spar? 	should I be sparring?
should you be sparring?
should he be sparring?
should we be sparring?
should you be sparring?
should they be sparring? 	should I have sparred?
should you have sparred?
should he have sparred?
should we have sparred?
should you have sparred?
should they have sparred? 	should I have been sparring?
should you have been sparring?
should he have been sparring?
should we have been sparring?
should you have been sparring?
should they have been sparring? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not spar?
should you not spar?
should he not spar?
should we not spar?
should you not spar?
should they not spar? 	should I not be sparring?
should you not be sparring?
should he not be sparring?
should we not be sparring?
should you not be sparring?
should they not be sparring? 	should I not have sparred?
should you not have sparred?
should he not have sparred?
should we not have sparred?
should you not have sparred?
should they not have sparred? 	should I not have been sparring?
should you not have been sparring?
should he not have been sparring?
should we not have been sparring?
should you not have been sparring?
should they not have been sparring?