Formal y informal?
Hola! ¿Cuándo debo usar discurso formal e informal?
2 Answers
Hola!
You would use Informal/tú form if you were talking to your friends, family, or children etc. (in other words, people you know really well)
You would use Formal/usted form when you are talking to teachers, parents, seniors, or people you don't know, so basically, people to whom you would like to show respect.
Hope this helped!
Formality/informality exist in all (well, certainly most) languages. The only difference is that some languages have specific forms (explicit syntactic structures) to make the distinction. I doubt that, if you were introduced to the President of the U.S. you would (as you might to a younger brother/sister) ask "How's it goin'?" or "Whatcha been up to?"