IR + regalarle

Question

¡Hola! Estudio español y tengo dos preguntas sobre mis deberes. Necesito completar esta pregunta con la forma adecuada de "ir":

¿________ regalarle un libro los dos?

1. Uso "Vais a" porque he usado las otras formas: ¿Vais a regalarle un libro los dos? But it seems to me that any of the forms of "ir" is appropriate. I understand the first part of the question to mean "Are/Is (somebody) giving him a book?" For example, it could be "Are you (singular) giving him a book?", "Are you (plural) giving him a book?" or "Is he/she giving him a book?" Is my understanding correct?

2. I don't understand why the question ends with "un libro los dos". Doesn't that mean "a book the two"?

¡Gracias!

Answer 1

Think of "los dos" as the two people who are giving the book to "him/her" (le).

It sounds a bit awkward, but it is correct.

Mejor dicho a mi parecer: "¿Vais/Van los dos a regalarle el libro?" "Are you two going to give him the book?"

¡Muchas gracias! - MGAO, Mar 30, 2017

Answer 2

"los dos" in this case means "both of you".

So the answer would be:

¿Vais (vosotros) a regalarle un libro los dos?

Or in formal way (or in Latin America):

¿Van (ustedes) a regalarle un libro los dos?

Both of you are going to give him/her a book?

So would it be incorrect that "los dos" refer to two other people (3rd person plural), ie "are the two of them going to give him a book?" "¿Van a regalarle un libro los dos?" - ErikainAndalusia, Mar 28, 2017

¡Muchas gracias! According to my prof, vamos is acceptable as well, is even the default answer. - MGAO, Mar 30, 2017