Usages of sí
La camarera pregunta si queremos dejar propina; yo digo que sí.
The waitress asks if we want to leave a tip; I say yes.
Sí, nos vemos en la plaza a las seis.
Yes, see you in the square at six.
Sin levadura, la masa no crece; con levadura, sí.
Without yeast, the dough doesn’t rise; with yeast, it does.
Elon.io is an online learning platform
We have an entire course teaching Spanish grammar and vocabulary.