English verb conjugation
OUGHT TO PREHEAT

Regular verb: preheat - preheated - preheated

Affirmation

Simple form	V-ing form
I ought to preheat you ought to preheat he ought to preheat we ought to preheat you ought to preheat they ought to preheat	I ought to be preheating you ought to be preheating he ought to be preheating we ought to be preheating you ought to be preheating they ought to be preheating
Perfect	V-ing perfect
I ought to have preheated you ought to have preheated he ought to have preheated we ought to have preheated you ought to have preheated they ought to have preheated	I ought to have been preheating you ought to have been preheating he ought to have been preheating we ought to have been preheating you ought to have been preheating they ought to have been preheating

Negation

Simple form	V-ing form
I ought not to preheat you ought not to preheat he ought not to preheat we ought not to preheat you ought not to preheat they ought not to preheat	I ought not to preheating you ought not to preheating he ought not to preheating we ought not to preheating you ought not to preheating they ought not to preheating
Perfect	V-ing perfect
I ought not to have preheated you ought not to have preheated he ought not to have preheated we ought not to have preheated you ought not to have preheated they ought not to have preheated	I ought not to have been preheating you ought not to have been preheating he ought not to have been preheating we ought not to have been preheating you ought not to have been preheating they ought not to have been preheating

Interrogative form

Simple form	V-ing form
ought to I preheat? ought to you preheat? ought to he preheat? ought to we preheat? ought to you preheat? ought to they preheat?	ought to I be preheating? ought to you be preheating? ought to he be preheating? ought to we be preheating? ought to you be preheating? ought to they be preheating?
Perfect	V-ing perfect
ought to I have preheated? ought to you have preheated? ought to he have preheated? ought to we have preheated? ought to you have preheated? ought to they have preheated?	ought to I have been preheating? ought to you have been preheating? ought to he have been preheating? ought to we have been preheating? ought to you have been preheating? ought to they have been preheating?

Interro-negative form

Simple form	V-ing form
ought I not to preheat? ought you not to preheat? ought he not to preheat? ought we not to preheat? ought you not to preheat? ought they not to preheat?	ought I not to be preheating? ought you not to be preheating? ought he not to be preheating? ought we not to be preheating? ought you not to be preheating? ought they not to be preheating?
Perfect	V-ing perfect
ought I not to have preheated? ought you not to have preheated? ought he not to have preheated? ought we not to have preheated? ought you not to have preheated? ought they not to have preheated?	ought I not to have been preheating? ought you not to have been preheating? ought he not to have been preheating? ought we not to have been preheating? ought you not to have been preheating? ought they not to have been preheating?