should shield
Verbo regular: shield - shielded- shielded

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd shield
you'd shield
he'd shield
we'd shield
you'd shield
they'd shield 	I'd be shielding
you'd be shielding
he'd be shielding
we'd be shielding
you'd be shielding
they'd be shielding	I should've shielded
you should've shielded
he should've shielded
we should've shielded
you should've shielded
they should've shielded	I should've been shielding
you should've been shielding
he should've been shielding
we should've been shielding
you should've been shielding
they should've been shielding	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't shield
you shouldn't shield
he shouldn't shield
we shouldn't shield
you shouldn't shield
they shouldn't shield 	I shouldn't be shielding
you shouldn't be shielding
he shouldn't be shielding
we shouldn't be shielding
you shouldn't be shielding
they shouldn't be shielding	I shouldn't have shielded
you shouldn't have shielded
he shouldn't have shielded
we shouldn't have shielded
you shouldn't have shielded
they shouldn't have shielded	I shouldn't have been shielding
you shouldn't have been shielding
he shouldn't have been shielding
we shouldn't have been shielding
you shouldn't have been shielding
they shouldn't have been shielding	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I shield?
should you shield?
should he shield?
should we shield?
should you shield?
should they shield? 	should I be shielding?
should you be shielding?
should he be shielding?
should we be shielding?
should you be shielding?
should they be shielding? 	should I have shielded?
should you have shielded?
should he have shielded?
should we have shielded?
should you have shielded?
should they have shielded? 	should I have been shielding?
should you have been shielding?
should he have been shielding?
should we have been shielding?
should you have been shielding?
should they have been shielding? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shouldn't I shield?
shouldn't you shield?
shouldn't he shield?
shouldn't we shield?
shouldn't you shield?
shouldn't they shield? 	shouldn't I be shielding?
shouldn't you be shielding?
shouldn't he be shielding?
shouldn't we be shielding?
shouldn't you be shielding?
shouldn't they be shielding? 	shouldn't I have shielded?
shouldn't you have shielded?
shouldn't he have shielded?
shouldn't we have shielded?
shouldn't you have shielded?
shouldn't they have shielded? 	shouldn't I have been shielding?
shouldn't you have been shielding?
shouldn't he have been shielding?
shouldn't we have been shielding?
shouldn't you have been shielding?
shouldn't they have been shielding?