English verb conjugation
OUGHT TO FOREWARN

Regular verb: forewarn - forewarned - forewarned

Affirmation

Simple form	V-ing form
I ought to forewarn you ought to forewarn he ought to forewarn we ought to forewarn you ought to forewarn they ought to forewarn	I ought to be forewarning you ought to be forewarning he ought to be forewarning we ought to be forewarning you ought to be forewarning they ought to be forewarning
Perfect	V-ing perfect
I ought to have forewarned you ought to have forewarned he ought to have forewarned we ought to have forewarned you ought to have forewarned they ought to have forewarned	I ought to have been forewarning you ought to have been forewarning he ought to have been forewarning we ought to have been forewarning you ought to have been forewarning they ought to have been forewarning

Negation

Simple form	V-ing form
I ought not to forewarn you ought not to forewarn he ought not to forewarn we ought not to forewarn you ought not to forewarn they ought not to forewarn	I ought not to forewarning you ought not to forewarning he ought not to forewarning we ought not to forewarning you ought not to forewarning they ought not to forewarning
Perfect	V-ing perfect
I ought not to have forewarned you ought not to have forewarned he ought not to have forewarned we ought not to have forewarned you ought not to have forewarned they ought not to have forewarned	I ought not to have been forewarning you ought not to have been forewarning he ought not to have been forewarning we ought not to have been forewarning you ought not to have been forewarning they ought not to have been forewarning

Interrogative form

Simple form	V-ing form
ought to I forewarn? ought to you forewarn? ought to he forewarn? ought to we forewarn? ought to you forewarn? ought to they forewarn?	ought to I be forewarning? ought to you be forewarning? ought to he be forewarning? ought to we be forewarning? ought to you be forewarning? ought to they be forewarning?
Perfect	V-ing perfect
ought to I have forewarned? ought to you have forewarned? ought to he have forewarned? ought to we have forewarned? ought to you have forewarned? ought to they have forewarned?	ought to I have been forewarning? ought to you have been forewarning? ought to he have been forewarning? ought to we have been forewarning? ought to you have been forewarning? ought to they have been forewarning?

Interro-negative form

Simple form	V-ing form
ought I not to forewarn? ought you not to forewarn? ought he not to forewarn? ought we not to forewarn? ought you not to forewarn? ought they not to forewarn?	ought I not to be forewarning? ought you not to be forewarning? ought he not to be forewarning? ought we not to be forewarning? ought you not to be forewarning? ought they not to be forewarning?
Perfect	V-ing perfect
ought I not to have forewarned? ought you not to have forewarned? ought he not to have forewarned? ought we not to have forewarned? ought you not to have forewarned? ought they not to have forewarned?	ought I not to have been forewarning? ought you not to have been forewarning? ought he not to have been forewarning? ought we not to have been forewarning? ought you not to have been forewarning? ought they not to have been forewarning?