Breakdown of Ci sono molti libri sulle mensole.
il libro
book
molto
a lot of / much
c'è
there is / there are
su
on, about
Questions & Answers about Ci sono molti libri sulle mensole.
Why do we use sulle instead of just su?
In Italian, when the preposition su (on) is followed by a definite article like le (the), they combine into a single word. Since mensole (shelves) is feminine plural, it takes the article le. Combining su + le gives us the articulated preposition sulle (on the).
How do we know the gender and number of mensole?
Why does the sentence start with ci sono?
Would the word molti change if we were describing the shelves instead of the books?