I ought to alter you ought to alter he ought to alter we ought to alter you ought to alter they ought to alter
V-ing form
I ought to be altering you ought to be altering he ought to be altering we ought to be altering you ought to be altering they ought to be altering
Perfect
I ought to have altered you ought to have altered he ought to have altered we ought to have altered you ought to have altered they ought to have altered
V-ing perfect
I ought to have been altering you ought to have been altering he ought to have been altering we ought to have been altering you ought to have been altering they ought to have been altering
Negation
Simple form
I ought not to alter you ought not to alter he ought not to alter we ought not to alter you ought not to alter they ought not to alter
V-ing form
I ought not to altering you ought not to altering he ought not to altering we ought not to altering you ought not to altering they ought not to altering
Perfect
I ought not to have altered you ought not to have altered he ought not to have altered we ought not to have altered you ought not to have altered they ought not to have altered
V-ing perfect
I ought not to have been altering you ought not to have been altering he ought not to have been altering we ought not to have been altering you ought not to have been altering they ought not to have been altering
Interrogative form
Simple form
ought to I alter? ought to you alter? ought to he alter? ought to we alter? ought to you alter? ought to they alter?
V-ing form
ought to I be altering? ought to you be altering? ought to he be altering? ought to we be altering? ought to you be altering? ought to they be altering?
Perfect
ought to I have altered? ought to you have altered? ought to he have altered? ought to we have altered? ought to you have altered? ought to they have altered?
V-ing perfect
ought to I have been altering? ought to you have been altering? ought to he have been altering? ought to we have been altering? ought to you have been altering? ought to they have been altering?
Interro-negative form
Simple form
ought I not to alter? ought you not to alter? ought he not to alter? ought we not to alter? ought you not to alter? ought they not to alter?
V-ing form
ought I not to be altering? ought you not to be altering? ought he not to be altering? ought we not to be altering? ought you not to be altering? ought they not to be altering?
Perfect
ought I not to have altered? ought you not to have altered? ought he not to have altered? ought we not to have altered? ought you not to have altered? ought they not to have altered?
V-ing perfect
ought I not to have been altering? ought you not to have been altering? ought he not to have been altering? ought we not to have been altering? ought you not to have been altering? ought they not to have been altering?