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