Breakdown of Tenemos que reciclar en casa.
la casa
the house / home (also "at home")
en
in / on / by (means of transport) / about (after pensar)
tener
to have
que
that (relative pronoun, conjunction)
Questions & Answers about Tenemos que reciclar en casa.
How is tenemos que reciclar different from hay que reciclar?
Could I use debemos instead of tenemos que in this sentence?
Yes. Debemos reciclar en casa also means "We must recycle at home." Tenemos que is generally more common in everyday spoken Spanish for personal obligations, while deber can sound a bit more formal or express a stronger moral duty.
Why is it en casa and not en la casa?
Just like in English where we say "at home" instead of "at the home," Spanish uses the set phrase en casa without the definite article la when referring to one's own home.
Why do we use the preposition en here instead of a?
We use en because the action (recycling) happens in a stationary location (at home). If there were movement toward the house, like saying "We are going home," you would use the preposition a, making it a casa.