Questions & Answers about He abierto una lata de atún para preparar la cena.
He abierto is the present perfect: I have opened. In Spain, this tense is very commonly used for actions connected to the present, especially if they happened recently or matter now.
So He abierto una lata de atún para preparar la cena suggests:
- the action happened a short time ago, and
- it is relevant now because the speaker is about to make dinner.
Abrí una lata de atún would be the simple past (I opened a can of tuna), which sounds more like a completed past event with less focus on the present result.
In Spain, this difference is especially common:
- Hoy he abierto una lata... = Today I’ve opened a can...
- Ayer abrí una lata... = Yesterday I opened a can...