Questions & Answers about Do pracy jadę metrem, bo metro jest szybsze niż autobus.
Because do is the normal preposition for movement to a destination, and it takes the genitive case.
- praca = work
- do pracy = to work
So iść do pracy / jechać do pracy means to go to work.
Na pracę does not mean to work in this sense. It could appear in other contexts, but not as the normal expression for going to your workplace.
Jadę comes from jechać, which means to go / travel by vehicle.
So:
- idę = I go on foot
- jadę = I go by some form of transport
Since the speaker is using the metro, jadę makes sense.
A useful nuance: if you are talking about a habitual repeated commute, many speakers would very naturally say Do pracy jeżdżę metrem.
So:
- jadę = I’m going / I go by vehicle, often one trip or a present situation
- jeżdżę = I go regularly / habitually by vehicle
Textbook sentences sometimes use jadę in a broad present-tense way, but in everyday Polish jeżdżę is often more natural for a regular commute.