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