Why do we use "es" for "usted" and "eres" for "tú"?
tú y usted is equivalent to the vous-tu in french. Tú is like an informal you (friends, couple, someone that you trust) and usted is like you (your boss, and acquaintances, people that you respect).– Airam MetalJan 29, 2014 at 19:33
Related: spanish.stackexchange.com/q/7/12, spanish.stackexchange.com/q/836/12, spanish.stackexchange.com/q/1427/12– FlimzyJan 31, 2014 at 3:03
I encourage you specifically to read this question and its answers, as it explains how Usted is used, grammatically.– FlimzyJan 31, 2014 at 3:04
Usted is equivalent to you (2nd person) in English but it uses the third person form of the verbs (like he, she, it) in Spanish.
presente verbo es: yo soy tú eres él es nosotros somos vosotros sois ellos son
Usted must use 'es'.
The word usted is derived from the ancient expression vuestra merced (your mercy), which was used to politely/formally address other people several centuries ago. When you addressed someone as vuestra merced, you were not directly addressing them, but something else ("their mercy"); hence the use of the 3rd person that has been kept to our days.
Many other languages resort to using the plural in their courtesy treatments, such as French (vous) or German (Sie). Even English, though this is masked nowadays. Originally, you was the plural of thou; but it was used so often as a courtesy treatment that the singular form (thou) was deprecated in regular use. This is the reason why, nowadays, English makes no difference between the singular and plural forms of the 2nd person.
Very nice answer. Jan 30, 2014 at 8:42
Very nice indeed. If you're not careful, @Gorpik, people will think you actually know what you're talking about instead of just making stuff up like everyone else does here. Jan 31, 2014 at 19:38
"Tú" and "Usted" are the second personal-pronoun. Both of them.
We use "Tú" for friends, siblings, people of our age, sometimes younger people than us, or someone that we have confidence with,
With "Usted" we refer to older people than you, professors, maybe your parents and older familiars, or someone you don't have that much confidence with. It shows some respect for the person.
"Es" and "Eres" are the conjugation of the verb "Ser" ("To be"). We use "Es" with "Usted" and "Eres" with "Tú".