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