Breakdown of Mi hermana vuelve a su cuarto tranquilo.
la hermana
the sister
el cuarto
the room
mi
my
su
his/her/its/their/your (formal)
Questions & Answers about Mi hermana vuelve a su cuarto tranquilo.
Why is the verb vuelve spelled with a "ue" instead of an "o"?
Vuelve comes from the verb volver (to return). It is a stem-changing verb, meaning the o in the middle changes to ue for most forms in the present tense. Since mi hermana (my sister) is a "she," we use the third-person singular form, making it vuelve instead of "volve."
Why do we need the word a before su cuarto?
The word a means "to." Just like in English, when someone goes or returns to a destination, you need a preposition to connect the verb to the place. So, vuelve a means "returns to."
I learned that su means "your." Why does it mean "her" in this sentence?
Why does tranquilo come after cuarto?
In Spanish, descriptive words (adjectives) usually come right after the noun they describe. Instead of saying "quiet room," Spanish speakers say "room quiet" (cuarto tranquilo). Also, notice that tranquilo ends in -o to match the masculine noun cuarto.