English verb conjugation
MUST SMACK

Regular verb: smack - smacked - smacked

Affirmation

Simple form	V-ing form
I must smack you must smack she must smack we must smack you must smack they must smack	I must be smacking you must be smacking she must be smacking we must be smacking you must be smacking they must be smacking
Perfect	V-ing perfect
I must have smacked you must have smacked she must have smacked we must have smacked you must have smacked they must have smacked	I must have been smacking you must have been smacking she must have been smacking we must have been smacking you must have been smacking they must have been smacking

Negation

Simple form	V-ing form
I must not smack you must not smack she must not smack we must not smack you must not smack they must not smack	I must not be smacking you must not be smacking she must not be smacking we must not be smacking you must not be smacking they must not be smacking
Perfect	V-ing perfect
I must not have smacked you must not have smacked she must not have smacked we must not have smacked you must not have smacked they must not have smacked	I must not have been smacking you must not have been smacking she must not have been smacking we must not have been smacking you must not have been smacking they must not have been smacking

Interrogative form

Simple form	V-ing form
must I smack? must you smack? must she smack? must we smack? must you smack? must they smack?	must I be smacking? must you be smacking? must she be smacking? must we be smacking? must you be smacking? must they be smacking?
Perfect	V-ing perfect
must I have smacked? must you have smacked? must she have smacked? must we have smacked? must you have smacked? must they have smacked?	must I have been smacking? must you have been smacking? must she have been smacking? must we have been smacking? must you have been smacking? must they have been smacking?

Interro-negative form

Simple form	V-ing form
must I not smack? must you not smack? must she not smack? must we not smack? must you not smack? must they not smack?	must I not be smacking? must you not be smacking? must she not be smacking? must we not be smacking? must you not be smacking? must they not be smacking?
Perfect	V-ing perfect
must I not have smacked? must you not have smacked? must she not have smacked? must we not have smacked? must you not have smacked? must they not have smacked?	must I not have been smacking? must you not have been smacking? must she not have been smacking? must we not have been smacking? must you not have been smacking? must they not have been smacking?