Breakdown of Ellas están nerviosas porque el tren llega ahora.
ellas
they (f)
estar
to be (location/state)
ahora
now
llegar
to arrive
Questions & Answers about Ellas están nerviosas porque el tren llega ahora.
Why do we use están instead of son here?
Why does nerviosas end with -as?
Why is porque written as one word here?
When written as a single word without an accent mark, porque means because. If it is written as two words with an accent mark (por qué), it becomes a question word meaning why.
Why do we use the simple present llega if the train is arriving right now?
In Spanish, the simple present tense like llega is frequently used for actions happening right at this exact moment or in the immediate future. It is completely natural to use it for scheduled events like a train arriving.