English verb conjugation
SHOULD SKATEBOARD

Regular verb: skateboard - skateboarded - skateboarded

Affirmation

Simple form	V-ing form
I should skateboard you should skateboard he should skateboard we should skateboard you should skateboard they should skateboard	I should be skateboarding you should be skateboarding he should be skateboarding we should be skateboarding you should be skateboarding they should be skateboarding
Perfect	V-ing perfect
I should have skateboarded you should have skateboarded he should have skateboarded we should have skateboarded you should have skateboarded they should have skateboarded	I should have been skateboarding you should have been skateboarding he should have been skateboarding we should have been skateboarding you should have been skateboarding they should have been skateboarding

Negation

Simple form	V-ing form
I should not skateboard you should not skateboard he should not skateboard we should not skateboard you should not skateboard they should not skateboard	I should not be skateboarding you should not be skateboarding he should not be skateboarding we should not be skateboarding you should not be skateboarding they should not be skateboarding
Perfect	V-ing perfect
I should not have skateboarded you should not have skateboarded he should not have skateboarded we should not have skateboarded you should not have skateboarded they should not have skateboarded	I should not have been skateboarding you should not have been skateboarding he should not have been skateboarding we should not have been skateboarding you should not have been skateboarding they should not have been skateboarding

Interrogative form

Simple form	V-ing form
should I skateboard? should you skateboard? should he skateboard? should we skateboard? should you skateboard? should they skateboard?	should I be skateboarding? should you be skateboarding? should he be skateboarding? should we be skateboarding? should you be skateboarding? should they be skateboarding?
Perfect	V-ing perfect
should I have skateboarded? should you have skateboarded? should he have skateboarded? should we have skateboarded? should you have skateboarded? should they have skateboarded?	should I have been skateboarding? should you have been skateboarding? should he have been skateboarding? should we have been skateboarding? should you have been skateboarding? should they have been skateboarding?

Interro-negative form

Simple form	V-ing form
should I not skateboard? should you not skateboard? should he not skateboard? should we not skateboard? should you not skateboard? should they not skateboard?	should I not be skateboarding? should you not be skateboarding? should he not be skateboarding? should we not be skateboarding? should you not be skateboarding? should they not be skateboarding?
Perfect	V-ing perfect
should I not have skateboarded? should you not have skateboarded? should he not have skateboarded? should we not have skateboarded? should you not have skateboarded? should they not have skateboarded?	should I not have been skateboarding? should you not have been skateboarding? should he not have been skateboarding? should we not have been skateboarding? should you not have been skateboarding? should they not have been skateboarding?