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