can smack
Regular verb: smack - smacked- smacked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can smack
you can smack
she can smack
we can smack
you can smack
they can smack 	I can be smacking
you can be smacking
she can be smacking
we can be smacking
you can be smacking
they can be smacking	I can have smacked
you can have smacked
she 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
she 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 	Perfect 	V-ing perfect 	
I cannot smack
you cannot smack
she cannot smack
we cannot smack
you cannot smack
they cannot smack 	I cannot be smacking
you cannot be smacking
she cannot be smacking
we cannot be smacking
you cannot be smacking
they cannot be smacking	I cannot have smacked
you cannot have smacked
she cannot have smacked
we cannot have smacked
you cannot have smacked
they cannot have smacked	I cannot have been smacking
you cannot have been smacking
she cannot have been smacking
we cannot have been smacking
you cannot have been smacking
they cannot have been smacking	

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