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