Cuando mi hermana viva sola, será más independiente.

to be

Breakdown of Cuando mi hermana viva sola, será más independiente.

• mi: my
• cuando: when
• más: more

Questions & Answers about Cuando mi hermana viva sola, será más independiente.

Why is it viva and not vive?

Because after cuando referring to a future event, Spanish uses the present subjunctive.

• Cuando mi hermana viva sola... = When my sister lives/is living on her own... in the future
• vive is the present indicative, which would not fit this future meaning

This is a very common pattern in Spanish:

• Cuando llegue, te llamo.
• Cuando tenga tiempo, lo haré.
• Cuando mi hermana viva sola, será más independiente.

Even though English uses a present form after when, Spanish switches to the subjunctive when the event has not happened yet.

Why is será in the future tense?

Because the sentence is talking about what will happen later.

The structure is:

• Cuando mi hermana viva sola = a future situation
• será más independiente = the result in the future

So Spanish uses:

• subjunctive in the cuando-clause
• future in the main clause

In English, we say When my sister lives alone, she will be more independent. Spanish works similarly in meaning, but the grammar is different in the first clause.

Can I say Cuando mi hermana vive sola, es más independiente?