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 mustn't smack you mustn't smack she mustn't smack we mustn't smack you mustn't smack they mustn't smack	I mustn't be smacking you mustn't be smacking she mustn't be smacking we mustn't be smacking you mustn't be smacking they mustn't be smacking
Perfect	V-ing perfect
I mustn't have smacked you mustn't have smacked she mustn't have smacked we mustn't have smacked you mustn't have smacked they mustn't have smacked	I mustn't have been smacking you mustn't have been smacking she mustn't have been smacking we mustn't have been smacking you mustn't have been smacking they mustn't 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
mustn't I smack? mustn't you smack? mustn't she smack? mustn't we smack? mustn't you smack? mustn't they smack?	mustn't I be smacking? mustn't you be smacking? mustn't she be smacking? mustn't we be smacking? mustn't you be smacking? mustn't they be smacking?
Perfect	V-ing perfect
mustn't I have smacked? mustn't you have smacked? mustn't she have smacked? mustn't we have smacked? mustn't you have smacked? mustn't they have smacked?	mustn't I have been smacking? mustn't you have been smacking? mustn't she have been smacking? mustn't we have been smacking? mustn't you have been smacking? mustn't they have been smacking?