English verb conjugation
SHALL JACKKNIFE

Regular verb: jackknife - jackknifed - jackknifed

Affirmation

Simple form	V-ing form
I shall jackknife you shall jackknife he shall jackknife we shall jackknife you shall jackknife they shall jackknife	I shall be jackknifing you shall be jackknifing he shall be jackknifing we shall be jackknifing you shall be jackknifing they shall be jackknifing
Perfect	V-ing perfect
I shall have jackknifed you shall have jackknifed he shall have jackknifed we shall have jackknifed you shall have jackknifed they shall have jackknifed	I shall have been jackknifing you shall have been jackknifing he shall have been jackknifing we shall have been jackknifing you shall have been jackknifing they shall have been jackknifing

Negation

Simple form	V-ing form
I shall not jackknife you shall not jackknife he shall not jackknife we shall not jackknife you shall not jackknife they shall not jackknife	I shall not be jackknifing you shall not be jackknifing he shall not be jackknifing we shall not be jackknifing you shall not be jackknifing they shall not be jackknifing
Perfect	V-ing perfect
I shall not have jackknifed you shall not have jackknifed he shall not have jackknifed we shall not have jackknifed you shall not have jackknifed they shall not have jackknifed	I shall not have been jackknifing you shall not have been jackknifing he shall not have been jackknifing we shall not have been jackknifing you shall not have been jackknifing they shall not have been jackknifing

Interrogative form

Simple form	V-ing form
shall I jackknife? shall you jackknife? shall he jackknife? shall we jackknife? shall you jackknife? shall they jackknife?	shall I be jackknifing? shall you be jackknifing? shall he be jackknifing? shall we be jackknifing? shall you be jackknifing? shall they be jackknifing?
Perfect	V-ing perfect
shall I have jackknifed? shall you have jackknifed? shall he have jackknifed? shall we have jackknifed? shall you have jackknifed? shall they have jackknifed?	shall I have been jackknifing? shall you have been jackknifing? shall he have been jackknifing? shall we have been jackknifing? shall you have been jackknifing? shall they have been jackknifing?

Interro-negative form

Simple form	V-ing form
shall I not jackknife? shall you not jackknife? shall he not jackknife? shall we not jackknife? shall you not jackknife? shall they not jackknife?	shall I not be jackknifing? shall you not be jackknifing? shall he not be jackknifing? shall we not be jackknifing? shall you not be jackknifing? shall they not be jackknifing?
Perfect	V-ing perfect
shall I not have jackknifed? shall you not have jackknifed? shall he not have jackknifed? shall we not have jackknifed? shall you not have jackknifed? shall they not have jackknifed?	shall I not have been jackknifing? shall you not have been jackknifing? shall he not have been jackknifing? shall we not have been jackknifing? shall you not have been jackknifing? shall they not have been jackknifing?