VOCATIVES & PROFESSIONAL TITLESTo get the attention of a person, or to mark your relation to the hearer, you use vocatives or professional titles:
|Doctor is a Professional Title|
Dr Smith, have you seen this report?( Doctor Smith, ha visto este informe?
John, I want you. ( John, te quiero)
Ladies and gentlemen!
Dr Smith (to a medical doctor)
My Lord ( to a peer, a bishop, a British Judge, etc.)
Your Honor ( to an American Judge)
Your Excellency ( to an ambassador)