should shift
Verbo regular: shift - shifted- shifted

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd shift
you'd shift
he'd shift
we'd shift
you'd shift
they'd shift 	I'd be shifting
you'd be shifting
he'd be shifting
we'd be shifting
you'd be shifting
they'd be shifting	I should've shifted
you should've shifted
he should've shifted
we should've shifted
you should've shifted
they should've shifted	I should've been shifting
you should've been shifting
he should've been shifting
we should've been shifting
you should've been shifting
they should've been shifting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't shift
you shouldn't shift
he shouldn't shift
we shouldn't shift
you shouldn't shift
they shouldn't shift 	I shouldn't be shifting
you shouldn't be shifting
he shouldn't be shifting
we shouldn't be shifting
you shouldn't be shifting
they shouldn't be shifting	I shouldn't have shifted
you shouldn't have shifted
he shouldn't have shifted
we shouldn't have shifted
you shouldn't have shifted
they shouldn't have shifted	I shouldn't have been shifting
you shouldn't have been shifting
he shouldn't have been shifting
we shouldn't have been shifting
you shouldn't have been shifting
they shouldn't have been shifting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I shift?
should you shift?
should he shift?
should we shift?
should you shift?
should they shift? 	should I be shifting?
should you be shifting?
should he be shifting?
should we be shifting?
should you be shifting?
should they be shifting? 	should I have shifted?
should you have shifted?
should he have shifted?
should we have shifted?
should you have shifted?
should they have shifted? 	should I have been shifting?
should you have been shifting?
should he have been shifting?
should we have been shifting?
should you have been shifting?
should they have been shifting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shouldn't I shift?
shouldn't you shift?
shouldn't he shift?
shouldn't we shift?
shouldn't you shift?
shouldn't they shift? 	shouldn't I be shifting?
shouldn't you be shifting?
shouldn't he be shifting?
shouldn't we be shifting?
shouldn't you be shifting?
shouldn't they be shifting? 	shouldn't I have shifted?
shouldn't you have shifted?
shouldn't he have shifted?
shouldn't we have shifted?
shouldn't you have shifted?
shouldn't they have shifted? 	shouldn't I have been shifting?
shouldn't you have been shifting?
shouldn't he have been shifting?
shouldn't we have been shifting?
shouldn't you have been shifting?
shouldn't they have been shifting?