"Llámame cuando él salga del hospital" Because "sale" is the present conjugation of the verb "Salir" and we are talking about a future event. For example: -Cuando salga de la escuela hay que ir a comer. -Me hablas cuando salgas de la fiesta. I recomend you to omit the subject "él" because native speakers use to do so. Be careful with accent marks. "Llámame" has an accent mark on the first "a" . And "él" in "e", because you are reffering to the male third person singular subject. If you omit the accent mark, the meaning of the word will change. For example: -Él es un policía. -El carro.

I'll try to answer it as I've been studying the subjunctive mood quite a lot lately and find it rather fascinating. I believe both could be right, depending on the context. The present subjunctive "Lllámame cuando él salga del hospital" is correct in situations that have a single future event envisioned. In this case, so many of the characteristics of the subjunctive come into play -- doubt, hypothetical conjectures, uncertainty, possibilities. One cannot be sure if a patient will ever leave the hospital. The indicative "Llámame cuando el sale del hospital" seems as if it would be correct when talking about an event that occurs on a regular basis. For example, a friend of an employee of a hospital asks -- When does he usually leave? Oh, he usually leaves at 5 pm? All right, call me when he leaves.

The correct way to say it is: "Llámame cuando salga del hospital." The "technical" reason, going into grammar, would be that you're talking about an action that's not necessarily certain, and if it happens, it will be completed in the future, so you need to use the tense called "subjuntivo" in Spanish, and in this case you use the "subjuntivo presente", which can be used for present or future actions (even though the name says "present"). But you're doing the right thing by asking, because as it happens with languages, sometimes the rules overlap, or don't apply to all cases, so going by the grammar rules sometimes doesn't give you an unambiguous answer. It's better to ask how most people say it, and then try to learn with which expressions certain tenses are used.

Yo te sugiero la siguiente: 1. Llámame cuando él salga del hospital. La gramática y la ortografía son correctas. Recuerda que el español lleva tildes " ´ " en ciertas vocales, según algunas reglas.

Entonces no hay ninguna situacion donde debo usar una pero no la otra?