English verb conjugation
SHALL PREHEAT

Regular verb: preheat - preheated - preheated

Affirmation

Simple form	V-ing form
I shall preheat you shall preheat she shall preheat we shall preheat you shall preheat they shall preheat	I shall be preheating you shall be preheating she shall be preheating we shall be preheating you shall be preheating they shall be preheating
Perfect	V-ing perfect
I shall have preheated you shall have preheated she shall have preheated we shall have preheated you shall have preheated they shall have preheated	I shall have been preheating you shall have been preheating she shall have been preheating we shall have been preheating you shall have been preheating they shall have been preheating

Negation

Simple form	V-ing form
I shall not preheat you shall not preheat she shall not preheat we shall not preheat you shall not preheat they shall not preheat	I shall not be preheating you shall not be preheating she shall not be preheating we shall not be preheating you shall not be preheating they shall not be preheating
Perfect	V-ing perfect
I shall not have preheated you shall not have preheated she shall not have preheated we shall not have preheated you shall not have preheated they shall not have preheated	I shall not have been preheating you shall not have been preheating she shall not have been preheating we shall not have been preheating you shall not have been preheating they shall not have been preheating

Interrogative form

Simple form	V-ing form
shall I preheat? shall you preheat? shall she preheat? shall we preheat? shall you preheat? shall they preheat?	shall I be preheating? shall you be preheating? shall she be preheating? shall we be preheating? shall you be preheating? shall they be preheating?
Perfect	V-ing perfect
shall I have preheated? shall you have preheated? shall she have preheated? shall we have preheated? shall you have preheated? shall they have preheated?	shall I have been preheating? shall you have been preheating? shall she have been preheating? shall we have been preheating? shall you have been preheating? shall they have been preheating?

Interro-negative form

Simple form	V-ing form
shall I not preheat? shall you not preheat? shall she not preheat? shall we not preheat? shall you not preheat? shall they not preheat?	shall I not be preheating? shall you not be preheating? shall she not be preheating? shall we not be preheating? shall you not be preheating? shall they not be preheating?
Perfect	V-ing perfect
shall I not have preheated? shall you not have preheated? shall she not have preheated? shall we not have preheated? shall you not have preheated? shall they not have preheated?	shall I not have been preheating? shall you not have been preheating? shall she not have been preheating? shall we not have been preheating? shall you not have been preheating? shall they not have been preheating?