I'd be surfing you'd be surfing she'd be surfing we'd be surfing you'd be surfing they'd be surfing
Perfect
I should've surfed you should've surfed she 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 she 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 she 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 she 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 she 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 she 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 she surf? should we surf? should you surf? should they surf?
V-ing form
should I be surfing? should you be surfing? should she be surfing? should we be surfing? should you be surfing? should they be surfing?
Perfect
should I have surfed? should you have surfed? should she 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 she 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 she 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 she 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 she 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 she have been surfing? shouldn't we have been surfing? shouldn't you have been surfing? shouldn't they have been surfing?