Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I ought to uderstate sth you ought to uderstate sth she ought to uderstate sth we ought to uderstate sth you ought to uderstate sth they ought to uderstate sth
V-ing form
I ought to be uderstate sthing you ought to be uderstate sthing she ought to be uderstate sthing we ought to be uderstate sthing you ought to be uderstate sthing they ought to be uderstate sthing
Perfect
I ought to have uderstate sthed you ought to have uderstate sthed she ought to have uderstate sthed we ought to have uderstate sthed you ought to have uderstate sthed they ought to have uderstate sthed
V-ing perfect
I ought to have been uderstate sthing you ought to have been uderstate sthing she ought to have been uderstate sthing we ought to have been uderstate sthing you ought to have been uderstate sthing they ought to have been uderstate sthing
Negation
Simple form
I ought not to uderstate sth you ought not to uderstate sth she ought not to uderstate sth we ought not to uderstate sth you ought not to uderstate sth they ought not to uderstate sth
V-ing form
I ought not to uderstate sthing you ought not to uderstate sthing she ought not to uderstate sthing we ought not to uderstate sthing you ought not to uderstate sthing they ought not to uderstate sthing
Perfect
I ought not to have uderstate sthed you ought not to have uderstate sthed she ought not to have uderstate sthed we ought not to have uderstate sthed you ought not to have uderstate sthed they ought not to have uderstate sthed
V-ing perfect
I ought not to have been uderstate sthing you ought not to have been uderstate sthing she ought not to have been uderstate sthing we ought not to have been uderstate sthing you ought not to have been uderstate sthing they ought not to have been uderstate sthing
Interrogative form
Simple form
ought to I uderstate sth? ought to you uderstate sth? ought to she uderstate sth? ought to we uderstate sth? ought to you uderstate sth? ought to they uderstate sth?
V-ing form
ought to I be uderstate sthing? ought to you be uderstate sthing? ought to she be uderstate sthing? ought to we be uderstate sthing? ought to you be uderstate sthing? ought to they be uderstate sthing?
Perfect
ought to I have uderstate sthed? ought to you have uderstate sthed? ought to she have uderstate sthed? ought to we have uderstate sthed? ought to you have uderstate sthed? ought to they have uderstate sthed?
V-ing perfect
ought to I have been uderstate sthing? ought to you have been uderstate sthing? ought to she have been uderstate sthing? ought to we have been uderstate sthing? ought to you have been uderstate sthing? ought to they have been uderstate sthing?
Interro-negative form
Simple form
ought I not to uderstate sth? ought you not to uderstate sth? ought she not to uderstate sth? ought we not to uderstate sth? ought you not to uderstate sth? ought they not to uderstate sth?
V-ing form
ought I not to be uderstate sthing? ought you not to be uderstate sthing? ought she not to be uderstate sthing? ought we not to be uderstate sthing? ought you not to be uderstate sthing? ought they not to be uderstate sthing?
Perfect
ought I not to have uderstate sthed? ought you not to have uderstate sthed? ought she not to have uderstate sthed? ought we not to have uderstate sthed? ought you not to have uderstate sthed? ought they not to have uderstate sthed?
V-ing perfect
ought I not to have been uderstate sthing? ought you not to have been uderstate sthing? ought she not to have been uderstate sthing? ought we not to have been uderstate sthing? ought you not to have been uderstate sthing? ought they not to have been uderstate sthing?