Spanish language Q&A Forum

Hello!

Why use subjuntivo vs indicativo in this sentence? 

Una vez que ustedes firmen, no hay marcha atrás. 

I can’t imagine using subjuntivo, or maybe I’m just thinking of it as a real factual warning vs something hypothetical that I can’t imagine in real situation. 

But correct answer is "...and can be unstable" (the weather') y puede 

SER variable / cambiante / inestable.  (I put puede estar variable)

Por qué se usa "las" en "[la juventud] es un lienzo en blanco esperando ser pintado con las que son consideradas experiencias inolvidables y valiosas lecciones de vida"? 

(https://progress.lawlessspanish.com/my-languages/spanish/tests/overview/3947371)

I would love a set of quizzes that drill me on all the tenses for difficult irregular verbs, such as seguir, proteger, sentir, dormer....

Does “Que me ensucias la camisa” literally mean You will dirty me, (specifically my) the t-shirt, where using the article la acts as a stand-in for a possessive adjective? 

Which is the most used form: "Cómo te llamas?" or "Cual es tú nombre?" I didn't understand quite well when reading the text

(please ignore the lack of the interrogation point at the beginning of the questions, my keyboard doesn't have this "feature")

habra convocatorias

Why is con used in this sentence: yo sueno con vivir in Cuba? Co means with right?

I wonder to know whether the second sentence need add ´´la´´ to indicate ´´the´´ meaning or not?  Thanks.

Nosotros todavía no salimos del trabajo.        /We haven't yet left work.

Juan todavía no salió de casa.      /Juan has not left the house yet.