English verb conjugation
SHOULD SURF

Regular verb: surf - surfed - surfed

Affirmation

Simple form	V-ing form
I'd surf you'd surf he'd surf we'd surf you'd surf they'd surf	I'd be surfing you'd be surfing he'd be surfing we'd be surfing you'd be surfing they'd be surfing
Perfect	V-ing perfect
I should've surfed you should've surfed he should've surfed we should've surfed you should've surfed they should've surfed	I should've been surfing you should've been surfing he should've been surfing we should've been surfing you should've been surfing they should've been surfing

Negation

Simple form	V-ing form
I shouldn't surf you shouldn't surf he shouldn't surf we shouldn't surf you shouldn't surf they shouldn't surf	I shouldn't be surfing you shouldn't be surfing he shouldn't be surfing we shouldn't be surfing you shouldn't be surfing they shouldn't be surfing
Perfect	V-ing perfect
I shouldn't have surfed you shouldn't have surfed he shouldn't have surfed we shouldn't have surfed you shouldn't have surfed they shouldn't have surfed	I shouldn't have been surfing you shouldn't have been surfing he shouldn't have been surfing we shouldn't have been surfing you shouldn't have been surfing they shouldn't have been surfing

Interrogative form

Simple form	V-ing form
should I surf? should you surf? should he surf? should we surf? should you surf? should they surf?	should I be surfing? should you be surfing? should he be surfing? should we be surfing? should you be surfing? should they be surfing?
Perfect	V-ing perfect
should I have surfed? should you have surfed? should he have surfed? should we have surfed? should you have surfed? should they have surfed?	should I have been surfing? should you have been surfing? should he have been surfing? should we have been surfing? should you have been surfing? should they have been surfing?

Interro-negative form

Simple form	V-ing form
shouldn't I surf? shouldn't you surf? shouldn't he surf? shouldn't we surf? shouldn't you surf? shouldn't they surf?	shouldn't I be surfing? shouldn't you be surfing? shouldn't he be surfing? shouldn't we be surfing? shouldn't you be surfing? shouldn't they be surfing?
Perfect	V-ing perfect
shouldn't I have surfed? shouldn't you have surfed? shouldn't he have surfed? shouldn't we have surfed? shouldn't you have surfed? shouldn't they have surfed?	shouldn't I have been surfing? shouldn't you have been surfing? shouldn't he have been surfing? shouldn't we have been surfing? shouldn't you have been surfing? shouldn't they have been surfing?