"If the movie is very interesting."
Let me break it down:
* si: This is the Spanish word for "if."
* la película: This means "the movie."
* es: This is the verb "to be" in the third person singular present tense.
* muy: This means "very."
* interesante: This means "interesting."
So, the entire sentence is a conditional statement, implying that something will happen or be true *if* the movie is interesting.