first of all

• Expressão usada para introduzir o primeiro ponto, passo ou motivo em uma sequência, frequentemente em discurso oral ou escrito.

A transitional phrase used to introduce the first point, step, or reason in a sequence, often in speech or writing.

1. Sequence markerA2formal

   Used to introduce the first point or step in a series.

   Primeiramente

   • First of all, let me thank everyone for coming.
   • First of all, we need to gather the necessary materials.
   • First of all, I want to clarify the main objective.

2. Emphasis on priorityA2informal

   Used to emphasize that something is the most important or initial consideration.

   Antes de tudo

   • First of all, you should apologize for your mistake.
   • First of all, let's make sure everyone is safe.
   • First of all, I need to finish this report.