In English, "shall" is classified as an auxiliary verb to indicate the future tense of a verb that comes after it. In Spanish, the future tense is expressed by an inflection of the verb.
An auxiliary verb, or helper verb, is a conjugated verb that comes before a main verb and determines the main verb's tense, mood, or aspect (e.g. I have gone.).
En el inglés hablado, y en el escrito en estilo coloquial, el verbo shall se contrae de manera que I/you/he etcshall se transforman en I'll/you'll/he'll etc. La forma negativa shall not se transforma en shan't.
1. (with first person) (expressing intentions, promises, predictions)
I shall be there if I can si puedo, estaré allí
I shan't say this more than once esto no lo voy a repetir
we shall take note of your comments tendremos en cuenta tus comentarios
as we shall see como veremos
2. (Formal) (with 2nd and 3rd person) (expressing determination)
you shall pay for this! ¡me las pagarás or vas a pagar!
they shall not pass no pasarán
3. (making suggestions, offers)
shall I open the window? ¿abro la ventana?
shall I make some coffee? ¿preparo café?
4. (indicating rule)
all members shall be entitled to vote todos los socios tendrán derecho al voto
the term “company property” shall be understood to include… se entiende que el término “propiedad de la empresa” comprende…
1(used to form 1st person in future tense and questions)
I shall goyo iré
no I shall not (come)no I shan't (come)no, yo no (vendré or voy a venir)
shall I go now?¿me voy ahora?;let's go in, shall we?¿entramos?;shall we let him?¿se lo permitimos?;shall we hear from you soon?¿te pondrás en contacto pronto?
2(in commands, emphatic)
you shall pay for this!¡me las vas a pagar!;"but I wanted to see him" — "and so you shall"—pero quería verle —y le vas a ver
