I ought to undergo you ought to undergo he ought to undergo we ought to undergo you ought to undergo they ought to undergo
V-ing form
I ought to be undergoing you ought to be undergoing he ought to be undergoing we ought to be undergoing you ought to be undergoing they ought to be undergoing
Perfect
I ought to have undergone you ought to have undergone he ought to have undergone we ought to have undergone you ought to have undergone they ought to have undergone
V-ing perfect
I ought to have been undergoing you ought to have been undergoing he ought to have been undergoing we ought to have been undergoing you ought to have been undergoing they ought to have been undergoing
Negation
Simple form
I oughtn't to undergo you oughtn't to undergo he oughtn't to undergo we oughtn't to undergo you oughtn't to undergo they oughtn't to undergo
V-ing form
I oughtn't to be undergoing you oughtn't to be undergoing he oughtn't to be undergoing we oughtn't to be undergoing you oughtn't to be undergoing they oughtn't to be undergoing
Perfect
I oughtn't to have undergone you oughtn't to have undergone he oughtn't to have undergone we oughtn't to have undergone you oughtn't to have undergone they oughtn't to have undergone
V-ing perfect
I oughtn't to have been undergoing you oughtn't to have been undergoing he oughtn't to have been undergoing we oughtn't to have been undergoing you oughtn't to have been undergoing they oughtn't to have been undergoing
Interrogative form
Simple form
ought to I undergo? ought to you undergo? ought to he undergo? ought to we undergo? ought to you undergo? ought to they undergo?
V-ing form
ought to I be undergoing? ought to you be undergoing? ought to he be undergoing? ought to we be undergoing? ought to you be undergoing? ought to they be undergoing?
Perfect
ought to I have undergone? ought to you have undergone? ought to he have undergone? ought to we have undergone? ought to you have undergone? ought to they have undergone?
V-ing perfect
ought to I have been undergoing? ought to you have been undergoing? ought to he have been undergoing? ought to we have been undergoing? ought to you have been undergoing? ought to they have been undergoing?
Interro-negative form
Simple form
oughtn't I to undergo? oughtn't you to undergo? oughtn't he to undergo? oughtn't we to undergo? oughtn't you to undergo? oughtn't they to undergo?
V-ing form
oughtn't I to be undergoing? oughtn't you to be undergoing? oughtn't he to be undergoing? oughtn't we to be undergoing? oughtn't you to be undergoing? oughtn't they to be undergoing?
Perfect
oughtn't I to have undergone? oughtn't you to have undergone? oughtn't he to have undergone? oughtn't we to have undergone? oughtn't you to have undergone? oughtn't they to have undergone?
V-ing perfect
oughtn't I to have been undergoing? oughtn't you to have been undergoing? oughtn't he to have been undergoing? oughtn't we to have been undergoing? oughtn't you to have been undergoing? oughtn't they to have been undergoing?