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