si comporta come se fosse

acts as if

→ si
phrase Rare #29,250
acts as if Used to say that someone behaves in a way that suggests something is true, even if it is not.
IT: Non è il capo, ma si comporta come se fosse il capo.
EN: He's not the boss, but he acts as if he were the boss.

È sposato ma si comporta come se fosse ancora un ragazzo single.

He's married but acts like he's still a single guy.

Lui si comporta come se fosse pazzo.

He acts like he's crazy.

Egli si comporta come se fosse pazzo.

He acts like he's crazy.

A volte si comporta come se fosse la proprietaria della casa.

Sometimes she acts like she owns the house.

— Parasite (2019)

A volte si comporta come se fosse il mio capo.

Sometimes he acts like he's my boss.