aircraft carrier
The Spanish word 'portaviones' translates to 'aircraft carrier' in English. It is a warship that serves as a seagoing airbase, equipped with a full-length flight deck and facilities for carrying, arming, deploying, and recovering aircraft.
The aircraft carrier has set sail to the East Sea.
In this sentence, 'el portaviones' is the subject, 'ha zarpado' is the main verb meaning 'has set sail', and 'hacia el mar del este' is a prepositional phrase indicating the direction of the aircraft carrier's movement.
The airplanes took off from the aircraft carrier.
Here 'Los aviones' is the subject, 'despegaron' is the main verb meaning 'took off', and 'desde el portaviones' is a prepositional phrase showing from where the airplanes took off.
We are building a new aircraft carrier.
In this sentence, 'Estamos' means 'We are', 'construyendo' is the main verb meaning 'building', and 'un nuevo portaviones' is the object, specifically the thing being built.