necessary
Necessario is an Italian adjective that means necessary. It is used to describe something that is required or indispensable. For example, 'La tua presenza è necessaria per la riunione' means 'Your presence is necessary for the meeting'.
It is necessary to study for the exam.
This is a simple sentence expressing necessity to take an action, in this case study, in order to prepare for an event – the exam.
It is not necessary to go to the party if you do not want to.
This is a suggestion implying that the person has a choice and is not obliged to attend the party if they don’t want to.
To travel, a passport is necessary.
This statement highlights a requirement for a specific circumstance. In this case, the need for a passport to travel internationally.