English verb conjugation
CAN SMASH

Regular verb: smash - smashed - smashed

Affirmation

Simple form	V-ing form
I can smash you can smash she can smash we can smash you can smash they can smash	I can be smashing you can be smashing she can be smashing we can be smashing you can be smashing they can be smashing
Perfect	V-ing perfect
I can have smashed you can have smashed she can have smashed we can have smashed you can have smashed they can have smashed	I can have been smashing you can have been smashing she can have been smashing we can have been smashing you can have been smashing they can have been smashing

Negation

Simple form	V-ing form
I can't smash you can't smash she can't smash we can't smash you can't smash they can't smash	I can't be smashing you can't be smashing she can't be smashing we can't be smashing you can't be smashing they can't be smashing
Perfect	V-ing perfect
I can't have smashed you can't have smashed she can't have smashed we can't have smashed you can't have smashed they can't have smashed	I can't have been smashing you can't have been smashing she can't have been smashing we can't have been smashing you can't have been smashing they can't have been smashing

Interrogative form

Simple form	V-ing form
can I smash? can you smash? can she smash? can we smash? can you smash? can they smash?	can I be smashing? can you be smashing? can she be smashing? can we be smashing? can you be smashing? can they be smashing?
Perfect	V-ing perfect
can I have smashed? can you have smashed? can she have smashed? can we have smashed? can you have smashed? can they have smashed?	can I have been smashing? can you have been smashing? can she have been smashing? can we have been smashing? can you have been smashing? can they have been smashing?

Interro-negative form

Simple form	V-ing form
can't I smash? can't you smash? can't she smash? can't we smash? can't you smash? can't they smash?	can't I be smashing? can't you be smashing? can't she be smashing? can't we be smashing? can't you be smashing? can't they be smashing?
Perfect	V-ing perfect
can't I have smashed? can't you have smashed? can't she have smashed? can't we have smashed? can't you have smashed? can't they have smashed?	can't I have been smashing? can't you have been smashing? can't she have been smashing? can't we have been smashing? can't you have been smashing? can't they have been smashing?