ought to harden
Regular verb: harden - hardened- hardened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to harden
you ought to harden
he ought to harden
we ought to harden
you ought to harden
they ought to harden 	I ought to be hardening
you ought to be hardening
he ought to be hardening
we ought to be hardening
you ought to be hardening
they ought to be hardening	I ought to have hardened
you ought to have hardened
he ought to have hardened
we ought to have hardened
you ought to have hardened
they ought to have hardened	I ought to have been hardening
you ought to have been hardening
he ought to have been hardening
we ought to have been hardening
you ought to have been hardening
they ought to have been hardening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to harden
you oughtn't to harden
he oughtn't to harden
we oughtn't to harden
you oughtn't to harden
they oughtn't to harden 	I oughtn't to be hardening
you oughtn't to be hardening
he oughtn't to be hardening
we oughtn't to be hardening
you oughtn't to be hardening
they oughtn't to be hardening	I oughtn't to have hardened
you oughtn't to have hardened
he oughtn't to have hardened
we oughtn't to have hardened
you oughtn't to have hardened
they oughtn't to have hardened	I oughtn't to have been hardening
you oughtn't to have been hardening
he oughtn't to have been hardening
we oughtn't to have been hardening
you oughtn't to have been hardening
they oughtn't to have been hardening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I harden?
ought to you harden?
ought to he harden?
ought to we harden?
ought to you harden?
ought to they harden? 	ought to I be hardening?
ought to you be hardening?
ought to he be hardening?
ought to we be hardening?
ought to you be hardening?
ought to they be hardening? 	ought to I have hardened?
ought to you have hardened?
ought to he have hardened?
ought to we have hardened?
ought to you have hardened?
ought to they have hardened? 	ought to I have been hardening?
ought to you have been hardening?
ought to he have been hardening?
ought to we have been hardening?
ought to you have been hardening?
ought to they have been hardening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to harden?
oughtn't you to harden?
oughtn't he to harden?
oughtn't we to harden?
oughtn't you to harden?
oughtn't they to harden? 	oughtn't I to be hardening?
oughtn't you to be hardening?
oughtn't he to be hardening?
oughtn't we to be hardening?
oughtn't you to be hardening?
oughtn't they to be hardening? 	oughtn't I to have hardened?
oughtn't you to have hardened?
oughtn't he to have hardened?
oughtn't we to have hardened?
oughtn't you to have hardened?
oughtn't they to have hardened? 	oughtn't I to have been hardening?
oughtn't you to have been hardening?
oughtn't he to have been hardening?
oughtn't we to have been hardening?
oughtn't you to have been hardening?
oughtn't they to have been hardening?