Breakdown of Al final decidimos quedarnos en casa.
la casa
the house
en
in / on / at
decidir
to decide
quedarse
to stay / to end up / become
Questions & Answers about Al final decidimos quedarnos en casa.
Since decidimos is the exact same word in both the present and past tense, how do we know it means 'decided' here?
Why didn't we use the past perfect here, like habíamos decidido?
The past perfect is used for an action that happened before another past action (like 'we had decided'). Here, deciding to stay home is the final event in a sequence, not an earlier event that sets the background, so the simple preterite (decidimos) is the correct choice.
Why is it quedarnos instead of just quedar?
Why is it en casa and not en la casa?
Just like in English, you can skip the article when talking about your own home. En casa means 'at home', whereas en la casa would sound more like 'in the house' (referring to the physical building).