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
I should've surfed you should've surfed he should've surfed we should've surfed you should've surfed they should've surfed
V-ing perfect
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
I shouldn't surf you shouldn't surf he shouldn't surf we shouldn't surf you shouldn't surf they shouldn't surf
V-ing form
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
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
V-ing perfect
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
should I surf? should you surf? should he surf? should we surf? should you surf? should they surf?
V-ing form
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
should I have surfed? should you have surfed? should he have surfed? should we have surfed? should you have surfed? should they have surfed?
V-ing perfect
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
shouldn't I surf? shouldn't you surf? shouldn't he surf? shouldn't we surf? shouldn't you surf? shouldn't they surf?
V-ing form
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
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?
V-ing perfect
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?