Breakdown of Мой друг работает в мастерской.
друг
friend
мой
my (мой, моя, моё) / mine
работать
to work
в
in / to (direction)
Questions & Answers about Мой друг работает в мастерской.
Why does the noun for 'workshop' look like an adjective ending in '-ой'?
Мастерская is a substantivized adjective, meaning it functions as a noun but changes its endings like a regular adjective. In the dictionary, 'workshop' is мастерская (feminine). Because it is used here in the prepositional case after в, the feminine adjective ending -ая changes to -ой, resulting in мастерской.
Since it declines like an adjective, why does the prepositional form end in '-ой' instead of '-ей'?
For feminine adjectives in the prepositional case, the ending is -ой if the stress falls on that ending, and -ей if it doesn't. In мастерская, the stress is on the final syllable, so it becomes мастерской. If the stress were earlier in the word, it would be -ей.
Is мастерской only used for the prepositional case?
No, it does a lot of heavy lifting! Because it follows standard feminine adjective declension, the exact same form мастерской is used for the genitive, dative, instrumental, and prepositional cases. For example, you would also use it to say 'I am walking towards the workshop' (Я иду к мастерской, dative).
Does мастерская secretly have a hidden noun it describes?