I ought to mark you ought to mark she ought to mark we ought to mark you ought to mark they ought to mark
V-ing form
I ought to be marking you ought to be marking she ought to be marking we ought to be marking you ought to be marking they ought to be marking
Perfect
I ought to have marked you ought to have marked she ought to have marked we ought to have marked you ought to have marked they ought to have marked
V-ing perfect
I ought to have been marking you ought to have been marking she ought to have been marking we ought to have been marking you ought to have been marking they ought to have been marking
Negation
Simple form
I oughtn't to mark you oughtn't to mark she oughtn't to mark we oughtn't to mark you oughtn't to mark they oughtn't to mark
V-ing form
I oughtn't to be marking you oughtn't to be marking she oughtn't to be marking we oughtn't to be marking you oughtn't to be marking they oughtn't to be marking
Perfect
I oughtn't to have marked you oughtn't to have marked she oughtn't to have marked we oughtn't to have marked you oughtn't to have marked they oughtn't to have marked
V-ing perfect
I oughtn't to have been marking you oughtn't to have been marking she oughtn't to have been marking we oughtn't to have been marking you oughtn't to have been marking they oughtn't to have been marking
Interrogative form
Simple form
ought to I mark? ought to you mark? ought to she mark? ought to we mark? ought to you mark? ought to they mark?
V-ing form
ought to I be marking? ought to you be marking? ought to she be marking? ought to we be marking? ought to you be marking? ought to they be marking?
Perfect
ought to I have marked? ought to you have marked? ought to she have marked? ought to we have marked? ought to you have marked? ought to they have marked?
V-ing perfect
ought to I have been marking? ought to you have been marking? ought to she have been marking? ought to we have been marking? ought to you have been marking? ought to they have been marking?
Interro-negative form
Simple form
oughtn't I to mark? oughtn't you to mark? oughtn't she to mark? oughtn't we to mark? oughtn't you to mark? oughtn't they to mark?
V-ing form
oughtn't I to be marking? oughtn't you to be marking? oughtn't she to be marking? oughtn't we to be marking? oughtn't you to be marking? oughtn't they to be marking?
Perfect
oughtn't I to have marked? oughtn't you to have marked? oughtn't she to have marked? oughtn't we to have marked? oughtn't you to have marked? oughtn't they to have marked?
V-ing perfect
oughtn't I to have been marking? oughtn't you to have been marking? oughtn't she to have been marking? oughtn't we to have been marking? oughtn't you to have been marking? oughtn't they to have been marking?