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