English verb conjugation
SHALL WARN

Regular verb: warn - warned - warned

Affirmation

Simple form	V-ing form
I shall warn you shall warn she shall warn we shall warn you shall warn they shall warn	I shall be warning you shall be warning she shall be warning we shall be warning you shall be warning they shall be warning
Perfect	V-ing perfect
I shall have warned you shall have warned she shall have warned we shall have warned you shall have warned they shall have warned	I shall have been warning you shall have been warning she shall have been warning we shall have been warning you shall have been warning they shall have been warning

Negation

Simple form	V-ing form
I shall not warn you shall not warn she shall not warn we shall not warn you shall not warn they shall not warn	I shall not be warning you shall not be warning she shall not be warning we shall not be warning you shall not be warning they shall not be warning
Perfect	V-ing perfect
I shall not have warned you shall not have warned she shall not have warned we shall not have warned you shall not have warned they shall not have warned	I shall not have been warning you shall not have been warning she shall not have been warning we shall not have been warning you shall not have been warning they shall not have been warning

Interrogative form

Simple form	V-ing form
shall I warn? shall you warn? shall she warn? shall we warn? shall you warn? shall they warn?	shall I be warning? shall you be warning? shall she be warning? shall we be warning? shall you be warning? shall they be warning?
Perfect	V-ing perfect
shall I have warned? shall you have warned? shall she have warned? shall we have warned? shall you have warned? shall they have warned?	shall I have been warning? shall you have been warning? shall she have been warning? shall we have been warning? shall you have been warning? shall they have been warning?

Interro-negative form

Simple form	V-ing form
shall I not warn? shall you not warn? shall she not warn? shall we not warn? shall you not warn? shall they not warn?	shall I not be warning? shall you not be warning? shall she not be warning? shall we not be warning? shall you not be warning? shall they not be warning?
Perfect	V-ing perfect
shall I not have warned? shall you not have warned? shall she not have warned? shall we not have warned? shall you not have warned? shall they not have warned?	shall I not have been warning? shall you not have been warning? shall she not have been warning? shall we not have been warning? shall you not have been warning? shall they not have been warning?