should harden
Verbo regular: harden - hardened- hardened

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd harden
you'd harden
he'd harden
we'd harden
you'd harden
they'd harden 	I'd be hardening
you'd be hardening
he'd be hardening
we'd be hardening
you'd be hardening
they'd be hardening	I should've hardened
you should've hardened
he should've hardened
we should've hardened
you should've hardened
they should've hardened	I should've been hardening
you should've been hardening
he should've been hardening
we should've been hardening
you should've been hardening
they should've been hardening	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't harden
you shouldn't harden
he shouldn't harden
we shouldn't harden
you shouldn't harden
they shouldn't harden 	I shouldn't be hardening
you shouldn't be hardening
he shouldn't be hardening
we shouldn't be hardening
you shouldn't be hardening
they shouldn't be hardening	I shouldn't have hardened
you shouldn't have hardened
he shouldn't have hardened
we shouldn't have hardened
you shouldn't have hardened
they shouldn't have hardened	I shouldn't have been hardening
you shouldn't have been hardening
he shouldn't have been hardening
we shouldn't have been hardening
you shouldn't have been hardening
they shouldn't have been hardening	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I harden?
should you harden?
should he harden?
should we harden?
should you harden?
should they harden? 	should I be hardening?
should you be hardening?
should he be hardening?
should we be hardening?
should you be hardening?
should they be hardening? 	should I have hardened?
should you have hardened?
should he have hardened?
should we have hardened?
should you have hardened?
should they have hardened? 	should I have been hardening?
should you have been hardening?
should he have been hardening?
should we have been hardening?
should you have been hardening?
should they have been hardening? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shouldn't I harden?
shouldn't you harden?
shouldn't he harden?
shouldn't we harden?
shouldn't you harden?
shouldn't they harden? 	shouldn't I be hardening?
shouldn't you be hardening?
shouldn't he be hardening?
shouldn't we be hardening?
shouldn't you be hardening?
shouldn't they be hardening? 	shouldn't I have hardened?
shouldn't you have hardened?
shouldn't he have hardened?
shouldn't we have hardened?
shouldn't you have hardened?
shouldn't they have hardened? 	shouldn't I have been hardening?
shouldn't you have been hardening?
shouldn't he have been hardening?
shouldn't we have been hardening?
shouldn't you have been hardening?
shouldn't they have been hardening?