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