don't I surf? don't you surf? doesn't she surf? don't we surf? don't you surf? don't they surf?
Presente continuo
am I not surfing? aren't you surfing? isn't she surfing? aren't we surfing? aren't you surfing? aren't they surfing?
Pretérito
didn't I surf? didn't you surf? didn't she surf? didn't we surf? didn't you surf? didn't they surf?
Pretérito continuo
wasn't I surfing? weren't you surfing? wasn't she surfing? weren't we surfing? weren't you surfing? weren't they surfing?
Presente perfecto
haven't I surfed? haven't you surfed? hasn't she surfed? haven't we surfed? haven't you surfed? haven't they surfed?
Presente perfecto continuo
haven't I been surfing? haven't you been surfing? hasn't she been surfing? haven't we been surfing? haven't you been surfing? haven't they been surfing?
Pluscuamperfecto
hadn't I surfed? hadn't you surfed? hadn't she surfed? hadn't we surfed? hadn't you surfed? hadn't they surfed?
Pluscuamperfecto continuo
hadn't I been surfing? hadn't you been surfing? hadn't she been surfing? hadn't we been surfing? hadn't you been surfing? hadn't they been surfing?
Futuro simple
won't I surf? won't you surf? won't she surf? won't we surf? won't you surf? won't they surf?
Futuro continuo
won't I be surfing? won't you be surfing? won't she be surfing? won't we be surfing? won't you be surfing? won't they be surfing?
Futuro perfecto
won't I have surfed? won't you have surfed? won't she have surfed? won't we have surfed? won't you have surfed? won't they have surfed?
Futuro perfecto contínuo
won't I have been surfing? won't you have been surfing? won't she have been surfing? won't we have been surfing? won't you have been surfing? won't they have been surfing?
Condicional
Presente
wouldn't I surf? wouldn't you surf? wouldn't she surf? wouldn't we surf? wouldn't you surf? wouldn't they surf?
Presente continuo
wouldn't I be surfing? wouldn't you be surfing? wouldn't she be surfing? wouldn't we be surfing? wouldn't you be surfing? wouldn't they be surfing?
Passado
wouldn't I have surfed? wouldn't you have surfed? wouldn't she have surfed? wouldn't we have surfed? wouldn't you have surfed? wouldn't they have surfed?
Passado continuo
wouldn't I have been surfing? wouldn't you have been surfing? wouldn't she have been surfing? wouldn't we have been surfing? wouldn't you have been surfing? wouldn't they have been surfing?