Breakdown of ¡Qué furioso estuvo el pasajero!
estar
to be (location/state)
qué
what
el pasajero
the passenger
furioso
furious
Questions & Answers about ¡Qué furioso estuvo el pasajero!
Why is it estuvo instead of a regular past tense form?
Why use a form of estar here instead of ser for "was"?
You use estar for temporary emotions and physical states. Because being furious is a temporary feeling rather than a permanent personality trait of the passenger, it requires estar.
Why does qué mean "how" here instead of "what"?
When qué is followed directly by an adjective (like furioso) in an exclamation, it translates to "How...!" So, ¡Qué furioso! means "How furious!" Another common example you might hear is ¡Qué bonito! (How pretty!).
Why is the subject (el pasajero) at the very end of the sentence?