Changing haver when it means "to exist" with ter ("to own"): Tem muito problema na cidade ("There are many complications in the city") is a great deal more Regular in speech than Há muitos problemas na cidade. The ease of flagging a bus and finding on it (if there aren't https://bettaso.com/profile.php?mod=space&action=view&userinfo=camilla.dimarco.451692&name=Your_Account