should grind
Verbo irregular: grind - ground- ground

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should grind
you should grind
he should grind
we should grind
you should grind
they should grind 	I should be grinding
you should be grinding
he should be grinding
we should be grinding
you should be grinding
they should be grinding	I should have ground
you should have ground
he should have ground
we should have ground
you should have ground
they should have ground	I should have been grinding
you should have been grinding
he should have been grinding
we should have been grinding
you should have been grinding
they should have been grinding	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not grind
you should not grind
he should not grind
we should not grind
you should not grind
they should not grind 	I should not be grinding
you should not be grinding
he should not be grinding
we should not be grinding
you should not be grinding
they should not be grinding	I should not have ground
you should not have ground
he should not have ground
we should not have ground
you should not have ground
they should not have ground	I should not have been grinding
you should not have been grinding
he should not have been grinding
we should not have been grinding
you should not have been grinding
they should not have been grinding	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I grind?
should you grind?
should he grind?
should we grind?
should you grind?
should they grind? 	should I be grinding?
should you be grinding?
should he be grinding?
should we be grinding?
should you be grinding?
should they be grinding? 	should I have ground?
should you have ground?
should he have ground?
should we have ground?
should you have ground?
should they have ground? 	should I have been grinding?
should you have been grinding?
should he have been grinding?
should we have been grinding?
should you have been grinding?
should they have been grinding? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not grind?
should you not grind?
should he not grind?
should we not grind?
should you not grind?
should they not grind? 	should I not be grinding?
should you not be grinding?
should he not be grinding?
should we not be grinding?
should you not be grinding?
should they not be grinding? 	should I not have ground?
should you not have ground?
should he not have ground?
should we not have ground?
should you not have ground?
should they not have ground? 	should I not have been grinding?
should you not have been grinding?
should he not have been grinding?
should we not have been grinding?
should you not have been grinding?
should they not have been grinding?