Learn Italian: Lo spettacolo è bellissimo, ci ha sorpreso! - The show is very beautiful, it surprised us!

To say something is "very" or "extremely" beautiful, Italian uses the suffix -issimo. You drop the final vowel of the adjective (bello becomes bell-) and add -issimo. Since it describes the masculine singular noun lo spettacolo, it takes the -o ending. If it described a feminine word, it would be bellissima.

Does ci mean "there" in this sentence?

No, here ci is a direct object pronoun meaning "us". While ci often means "there" in other contexts, when placed right before an action verb like ha sorpreso (surprised), it receives the action: "it surprised us".

Why is it lo spettacolo instead of il spettacolo?

Masculine singular words that start with an "s" followed by another consonant (like the "sp" in spettacolo) must use the definite article lo instead of the regular il.

Is sorpreso an irregular verb form?

Yes! It is the irregular past participle of sorprendere (to surprise). Just like the very common base verb prendere (to take) becomes preso in the past, sorprendere becomes sorpreso.