ci fu

form-of historic past singular third-person

esserciの三人称単数遠過去形

English Meaning

third-person singular past historic of esserci

Durante la notte ci fu un violento temporale che svegliò tutti.

夜の間に激しい雷雨があったため、みんなが目を覚ました。

During the night there was a violent thunderstorm that woke everyone.

ci furono

（ plural ）