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