Breakdown of Sen otobüs bekliyor musun?
sen
you
otobüs
bus
beklemek
to wait
mi
question particle (mı/mi/mu/mü)
Questions & Answers about Sen otobüs bekliyor musun?
Why is the personal suffix attached to "mu" instead of the verb?
In Turkish present continuous questions, the question particle comes after the verb, and the personal suffix attaches to that particle instead of the verb. So we have bekliyor (is waiting) plus mu (question) plus sun (you).
The verb "to wait" is "beklemek". Why is it "bekliyor" here and not "bekleyor"?
When a verb root ends in a wide vowel like a or e (the root here is bekle-), that vowel drops or "narrows" when adding the -iyor suffix. The e changes into an i, making it bekliyor. This is a special spelling rule you will see often in the present continuous tense.
The English translation says "a bus", but there is no "bir" in the Turkish sentence. Why?
In Turkish, when you are talking about a general, non-specific category rather than one particular item, you usually leave out the word bir (a/an). Saying otobüs bekliyor musun? is conceptually like asking "Are you bus-waiting?" which is the most natural way to express this.
How do we say the word "for" in this sentence?
You don't need an extra word for it! The Turkish verb beklemek (to wait) connects to its object directly without a preposition. You just place the thing you are waiting for right before the verb.