I ought to discern you ought to discern she ought to discern we ought to discern you ought to discern they ought to discern
V-ing form
I ought to be discerning you ought to be discerning she ought to be discerning we ought to be discerning you ought to be discerning they ought to be discerning
Perfect
I ought to have discerned you ought to have discerned she ought to have discerned we ought to have discerned you ought to have discerned they ought to have discerned
V-ing perfect
I ought to have been discerning you ought to have been discerning she ought to have been discerning we ought to have been discerning you ought to have been discerning they ought to have been discerning
Negation
Simple form
I ought not to discern you ought not to discern she ought not to discern we ought not to discern you ought not to discern they ought not to discern
V-ing form
I ought not to discerning you ought not to discerning she ought not to discerning we ought not to discerning you ought not to discerning they ought not to discerning
Perfect
I ought not to have discerned you ought not to have discerned she ought not to have discerned we ought not to have discerned you ought not to have discerned they ought not to have discerned
V-ing perfect
I ought not to have been discerning you ought not to have been discerning she ought not to have been discerning we ought not to have been discerning you ought not to have been discerning they ought not to have been discerning
Interrogative form
Simple form
ought to I discern? ought to you discern? ought to she discern? ought to we discern? ought to you discern? ought to they discern?
V-ing form
ought to I be discerning? ought to you be discerning? ought to she be discerning? ought to we be discerning? ought to you be discerning? ought to they be discerning?
Perfect
ought to I have discerned? ought to you have discerned? ought to she have discerned? ought to we have discerned? ought to you have discerned? ought to they have discerned?
V-ing perfect
ought to I have been discerning? ought to you have been discerning? ought to she have been discerning? ought to we have been discerning? ought to you have been discerning? ought to they have been discerning?
Interro-negative form
Simple form
ought I not to discern? ought you not to discern? ought she not to discern? ought we not to discern? ought you not to discern? ought they not to discern?
V-ing form
ought I not to be discerning? ought you not to be discerning? ought she not to be discerning? ought we not to be discerning? ought you not to be discerning? ought they not to be discerning?
Perfect
ought I not to have discerned? ought you not to have discerned? ought she not to have discerned? ought we not to have discerned? ought you not to have discerned? ought they not to have discerned?
V-ing perfect
ought I not to have been discerning? ought you not to have been discerning? ought she not to have been discerning? ought we not to have been discerning? ought you not to have been discerning? ought they not to have been discerning?