Learn Farsi: پدر من در تهران از قطار پیاده شد.

The full verb here is پیاده شد, which is a compound verb. پیاده means 'on foot' or 'walking', and شد is the simple past tense of 'to become' for a third-person singular subject (he/she/it). Literally, this translates to 'became on foot'. Farsi uses this phrase for getting out of or off a vehicle.

Why do we use از before the train?

In English, we say we got 'off' a train, but Farsi logic says we got off 'from' it. The preposition از means 'from'. So, you literally say you became on foot from the train (از قطار).

There is no word for 'my' written in پدر من, so how do we know it is 'my father'?

Farsi expresses possession by linking the noun and the owner. من means 'me' or 'I'. To link it to پدر (father), we use the hidden 'e' sound called the Ezafe. You read it as 'pedar-e man', which translates directly to 'father of me'.

Why are the locations (در تهران and از قطار) placed before the verb?

Farsi sentences usually follow a Subject-Object-Verb order. The subject (پدر من) comes first, and the verb (پیاده شد) must go at the very end of the sentence. The prepositional phrases showing where this happened get tucked into the middle.