English verb conjugation
CAN SMACK

Regular verb: smack - smacked - smacked

Affirmation

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

Negation

Simple form	V-ing form
I can't smack you can't smack he can't smack we can't smack you can't smack they can't smack	I can't be smacking you can't be smacking he can't be smacking we can't be smacking you can't be smacking they can't be smacking
Perfect	V-ing perfect
I can't have smacked you can't have smacked he can't have smacked we can't have smacked you can't have smacked they can't have smacked	I can't have been smacking you can't have been smacking he can't have been smacking we can't have been smacking you can't have been smacking they can't have been smacking

Interrogative form

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

Interro-negative form

Simple form	V-ing form
can't I smack? can't you smack? can't he smack? can't we smack? can't you smack? can't they smack?	can't I be smacking? can't you be smacking? can't he be smacking? can't we be smacking? can't you be smacking? can't they be smacking?
Perfect	V-ing perfect
can't I have smacked? can't you have smacked? can't he have smacked? can't we have smacked? can't you have smacked? can't they have smacked?	can't I have been smacking? can't you have been smacking? can't he have been smacking? can't we have been smacking? can't you have been smacking? can't they have been smacking?