be [cardinal number] years old
In Italian, the phrase 'essere [numero cardinale] anni' is used to express someone's age. The verb 'essere' means 'to be' and is conjugated according to the subject. The cardinal number replaces '[numero cardinale]' and indicates the specific age, for example, 'essere 30 anni' means 'to be 30 years old'. This structure is commonly used in everyday conversation when discussing age.
Luca has just turned ten years old.
This phrase indicates that Luca has recently celebrated his tenth birthday.
Maria will be twenty years old in two months.
This phrase expresses that Maria will reach the age of twenty in the upcoming two months.
We are fifteen years old this year.
This phrase conveys that the speaker and others included in 'we' have turned fifteen in the current year.