Breakdown of A perfumaria foi decorada com espelhos brilhantes antes da abertura.
Questions & Answers about A perfumaria foi decorada com espelhos brilhantes antes da abertura.
Because foi decorada is the passive voice (ser + past participle). It emphasizes that the shop received the decoration rather than who did it. In active voice you could say, for example:
• Decoraram a perfumaria com espelhos brilhantes… (They decorated the perfume shop…)
• Or even Alguém decorou a perfumaria…
Yes. You can use the infinitive (verbal form) instead of the noun:
• A perfumaria foi decorada … antes de abrir.
Both forms are correct; one uses a noun (abertura), the other a verb (abrir).
Yes.
• Foi decorada is a true passive (ser + participle) focusing on the action’s recipient.
• Decorou-se a perfumaria is a se passive (the so-called índex pessoal): less formal, common in spoken/written PT-PT. Both mean the same, but the ser-passive feels more neutral/objective.