I ought to treat you ought to treat he ought to treat we ought to treat you ought to treat they ought to treat
V-ing form
I ought to be treating you ought to be treating he ought to be treating we ought to be treating you ought to be treating they ought to be treating
Perfect
I ought to have treated you ought to have treated he ought to have treated we ought to have treated you ought to have treated they ought to have treated
V-ing perfect
I ought to have been treating you ought to have been treating he ought to have been treating we ought to have been treating you ought to have been treating they ought to have been treating
Negation
Simple form
I ought not to treat you ought not to treat he ought not to treat we ought not to treat you ought not to treat they ought not to treat
V-ing form
I ought not to treating you ought not to treating he ought not to treating we ought not to treating you ought not to treating they ought not to treating
Perfect
I ought not to have treated you ought not to have treated he ought not to have treated we ought not to have treated you ought not to have treated they ought not to have treated
V-ing perfect
I ought not to have been treating you ought not to have been treating he ought not to have been treating we ought not to have been treating you ought not to have been treating they ought not to have been treating
Interrogative form
Simple form
ought to I treat? ought to you treat? ought to he treat? ought to we treat? ought to you treat? ought to they treat?
V-ing form
ought to I be treating? ought to you be treating? ought to he be treating? ought to we be treating? ought to you be treating? ought to they be treating?
Perfect
ought to I have treated? ought to you have treated? ought to he have treated? ought to we have treated? ought to you have treated? ought to they have treated?
V-ing perfect
ought to I have been treating? ought to you have been treating? ought to he have been treating? ought to we have been treating? ought to you have been treating? ought to they have been treating?
Interro-negative form
Simple form
ought I not to treat? ought you not to treat? ought he not to treat? ought we not to treat? ought you not to treat? ought they not to treat?
V-ing form
ought I not to be treating? ought you not to be treating? ought he not to be treating? ought we not to be treating? ought you not to be treating? ought they not to be treating?
Perfect
ought I not to have treated? ought you not to have treated? ought he not to have treated? ought we not to have treated? ought you not to have treated? ought they not to have treated?
V-ing perfect
ought I not to have been treating? ought you not to have been treating? ought he not to have been treating? ought we not to have been treating? ought you not to have been treating? ought they not to have been treating?