English verb conjugation
OUGHT TO PREWARN

Regular verb: prewarn - prewarned - prewarned

Affirmation

Simple form	V-ing form
I ought to prewarn you ought to prewarn he ought to prewarn we ought to prewarn you ought to prewarn they ought to prewarn	I ought to be prewarning you ought to be prewarning he ought to be prewarning we ought to be prewarning you ought to be prewarning they ought to be prewarning
Perfect	V-ing perfect
I ought to have prewarned you ought to have prewarned he ought to have prewarned we ought to have prewarned you ought to have prewarned they ought to have prewarned	I ought to have been prewarning you ought to have been prewarning he ought to have been prewarning we ought to have been prewarning you ought to have been prewarning they ought to have been prewarning

Negation

Simple form	V-ing form
I ought not to prewarn you ought not to prewarn he ought not to prewarn we ought not to prewarn you ought not to prewarn they ought not to prewarn	I ought not to prewarning you ought not to prewarning he ought not to prewarning we ought not to prewarning you ought not to prewarning they ought not to prewarning
Perfect	V-ing perfect
I ought not to have prewarned you ought not to have prewarned he ought not to have prewarned we ought not to have prewarned you ought not to have prewarned they ought not to have prewarned	I ought not to have been prewarning you ought not to have been prewarning he ought not to have been prewarning we ought not to have been prewarning you ought not to have been prewarning they ought not to have been prewarning

Interrogative form

Simple form	V-ing form
ought to I prewarn? ought to you prewarn? ought to he prewarn? ought to we prewarn? ought to you prewarn? ought to they prewarn?	ought to I be prewarning? ought to you be prewarning? ought to he be prewarning? ought to we be prewarning? ought to you be prewarning? ought to they be prewarning?
Perfect	V-ing perfect
ought to I have prewarned? ought to you have prewarned? ought to he have prewarned? ought to we have prewarned? ought to you have prewarned? ought to they have prewarned?	ought to I have been prewarning? ought to you have been prewarning? ought to he have been prewarning? ought to we have been prewarning? ought to you have been prewarning? ought to they have been prewarning?

Interro-negative form

Simple form	V-ing form
ought I not to prewarn? ought you not to prewarn? ought he not to prewarn? ought we not to prewarn? ought you not to prewarn? ought they not to prewarn?	ought I not to be prewarning? ought you not to be prewarning? ought he not to be prewarning? ought we not to be prewarning? ought you not to be prewarning? ought they not to be prewarning?
Perfect	V-ing perfect
ought I not to have prewarned? ought you not to have prewarned? ought he not to have prewarned? ought we not to have prewarned? ought you not to have prewarned? ought they not to have prewarned?	ought I not to have been prewarning? ought you not to have been prewarning? ought he not to have been prewarning? ought we not to have been prewarning? ought you not to have been prewarning? ought they not to have been prewarning?