Questions & Answers about Když jdu do práce, beru si s sebou telefon i hodinky.
Když means when.
It introduces a subordinate clause: Když jdu do práce = When I go / am going to work.
In Czech, subordinate clauses are normally separated by a comma, so the comma here is required.
This is a very common question because Czech has two different verbs where English just has go.
- jít / jdu = to go in one direction, to be going, to be on the way
- chodit / chodím = to go regularly, habitually, back and forth
So:
- Když jdu do práce means when I’m going to work / when I’m on my way to work
- Chodím do práce means I go to work regularly or even I have a job and go there
In this sentence, jdu focuses on each individual trip to work, not just the general habit.