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