Breakdown of Este es el laboratorio donde trabajamos.
ser
to be
trabajar
to work
este
this (m.sg., also esta, estos, estas, esto)
donde
where (relative, not a question)
el laboratorio
the laboratory
Questions & Answers about Este es el laboratorio donde trabajamos.
Why is it Este and not Esto?
Even though "This" is the subject of the sentence and stands alone, we know exactly what it refers to: el laboratorio, which is a masculine noun. Esto is the neuter form, which is only used for abstract ideas, general statements, or objects we haven't identified yet.
Shouldn't Este have an accent mark since it acts as a pronoun here?
It used to! Older grammar rules required writing éste with an accent to show it was a pronoun replacing a noun (meaning "This one") rather than an adjective describing one. However, the Royal Spanish Academy (RAE) updated the rules, and these demonstrative pronouns no longer take accent marks.
Why doesn't donde have an accent mark over the 'o'?
Since trabajamos can also mean "we worked", how do we know it means "we work" here?
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