El tren está a punto de salir y tú no estás listo.
The train is about to leave and you are not ready.
Breakdown of El tren está a punto de salir y tú no estás listo.
tú
you (informal singular)
de
from / of
y
and
no
no, not
Questions & Answers about El tren está a punto de salir y tú no estás listo.
How does estar a punto de work in this sentence? Can I use it in the past tense?
Estar a punto de means "to be about to" do something. You conjugate the verb estar to match the subject (here, el tren) and the tense, then follow it with de and an infinitive verb (here, salir). You can absolutely use it in the past! For example, estaba a punto de salir means "it was about to leave."
Why use salir here instead of irse for the train leaving?
I thought listo meant "smart". Why does it mean "ready" here?
Why include the pronoun tú if estás already means "you are"?