Questions & Answers about Bussi pysähtyy pysäkillä.
The sentence breaks down like this:
bussi – bus
- Nominative singular (the basic dictionary form).
- It is the subject of the sentence.
pysähtyy – stops
- 3rd person singular present tense of the verb pysähtyä (to stop).
- It is the main verb / predicate.
pysäkillä – at the (bus) stop
- Adessive case of pysäkki (stop, bus stop): pysäkki → pysäkillä.
- The ending -llä expresses location: at/on the stop.
- It is an adverbial of place (where the bus stops).
So literally: “Bus stops at-the-stop.”