Breakdown of En la excursión éramos veintiséis personas y nadie quiso volver antes de tiempo.
Questions & Answers about En la excursión éramos veintiséis personas y nadie quiso volver antes de tiempo.
En la excursión sets the scene and means something like on the excursion or during the excursion.
Spanish often uses en with events or situations:
- en la reunión
- en clase
- en el viaje
Here it tells you the context in which the rest happened. You could also say durante la excursión, but en la excursión is very natural.
Because ser is used here to express how many people made up the group.
- Éramos veintiséis personas = the group consisted of twenty-six people / there were twenty-six of us
- Estábamos veintiséis personas sounds wrong in standard Spanish
Estar is usually about location or condition, not group identity/number in this kind of sentence.