I ought to modify you ought to modify he ought to modify we ought to modify you ought to modify they ought to modify
V-ing form
I ought to be modifying you ought to be modifying he ought to be modifying we ought to be modifying you ought to be modifying they ought to be modifying
Perfect
I ought to have modified you ought to have modified he ought to have modified we ought to have modified you ought to have modified they ought to have modified
V-ing perfect
I ought to have been modifying you ought to have been modifying he ought to have been modifying we ought to have been modifying you ought to have been modifying they ought to have been modifying
Negation
Simple form
I ought not to modify you ought not to modify he ought not to modify we ought not to modify you ought not to modify they ought not to modify
V-ing form
I ought not to modifying you ought not to modifying he ought not to modifying we ought not to modifying you ought not to modifying they ought not to modifying
Perfect
I ought not to have modified you ought not to have modified he ought not to have modified we ought not to have modified you ought not to have modified they ought not to have modified
V-ing perfect
I ought not to have been modifying you ought not to have been modifying he ought not to have been modifying we ought not to have been modifying you ought not to have been modifying they ought not to have been modifying
Interrogative form
Simple form
ought to I modify? ought to you modify? ought to he modify? ought to we modify? ought to you modify? ought to they modify?
V-ing form
ought to I be modifying? ought to you be modifying? ought to he be modifying? ought to we be modifying? ought to you be modifying? ought to they be modifying?
Perfect
ought to I have modified? ought to you have modified? ought to he have modified? ought to we have modified? ought to you have modified? ought to they have modified?
V-ing perfect
ought to I have been modifying? ought to you have been modifying? ought to he have been modifying? ought to we have been modifying? ought to you have been modifying? ought to they have been modifying?
Interro-negative form
Simple form
ought I not to modify? ought you not to modify? ought he not to modify? ought we not to modify? ought you not to modify? ought they not to modify?
V-ing form
ought I not to be modifying? ought you not to be modifying? ought he not to be modifying? ought we not to be modifying? ought you not to be modifying? ought they not to be modifying?
Perfect
ought I not to have modified? ought you not to have modified? ought he not to have modified? ought we not to have modified? ought you not to have modified? ought they not to have modified?
V-ing perfect
ought I not to have been modifying? ought you not to have been modifying? ought he not to have been modifying? ought we not to have been modifying? ought you not to have been modifying? ought they not to have been modifying?