I ought to yawn you ought to yawn she ought to yawn we ought to yawn you ought to yawn they ought to yawn
V-ing form
I ought to be yawning you ought to be yawning she ought to be yawning we ought to be yawning you ought to be yawning they ought to be yawning
Perfect
I ought to have yawned you ought to have yawned she ought to have yawned we ought to have yawned you ought to have yawned they ought to have yawned
V-ing perfect
I ought to have been yawning you ought to have been yawning she ought to have been yawning we ought to have been yawning you ought to have been yawning they ought to have been yawning
Negation
Simple form
I ought not to yawn you ought not to yawn she ought not to yawn we ought not to yawn you ought not to yawn they ought not to yawn
V-ing form
I ought not to yawning you ought not to yawning she ought not to yawning we ought not to yawning you ought not to yawning they ought not to yawning
Perfect
I ought not to have yawned you ought not to have yawned she ought not to have yawned we ought not to have yawned you ought not to have yawned they ought not to have yawned
V-ing perfect
I ought not to have been yawning you ought not to have been yawning she ought not to have been yawning we ought not to have been yawning you ought not to have been yawning they ought not to have been yawning
Interrogative form
Simple form
ought to I yawn? ought to you yawn? ought to she yawn? ought to we yawn? ought to you yawn? ought to they yawn?
V-ing form
ought to I be yawning? ought to you be yawning? ought to she be yawning? ought to we be yawning? ought to you be yawning? ought to they be yawning?
Perfect
ought to I have yawned? ought to you have yawned? ought to she have yawned? ought to we have yawned? ought to you have yawned? ought to they have yawned?
V-ing perfect
ought to I have been yawning? ought to you have been yawning? ought to she have been yawning? ought to we have been yawning? ought to you have been yawning? ought to they have been yawning?
Interro-negative form
Simple form
ought I not to yawn? ought you not to yawn? ought she not to yawn? ought we not to yawn? ought you not to yawn? ought they not to yawn?
V-ing form
ought I not to be yawning? ought you not to be yawning? ought she not to be yawning? ought we not to be yawning? ought you not to be yawning? ought they not to be yawning?
Perfect
ought I not to have yawned? ought you not to have yawned? ought she not to have yawned? ought we not to have yawned? ought you not to have yawned? ought they not to have yawned?
V-ing perfect
ought I not to have been yawning? ought you not to have been yawning? ought she not to have been yawning? ought we not to have been yawning? ought you not to have been yawning? ought they not to have been yawning?