Breakdown of Он работает в области науки.
он
he / it (for a masculine noun) / it (for a neuter noun)
работать
to work
наука
science
область
region; field
Questions & Answers about Он работает в области науки.
The current lesson is about prepositional endings in -ии. Why does в области end in a single -и?
The noun область (field/region) doesn't end in -ия, -ие, or -ий. It is a feminine noun ending in a soft sign (-ь), which makes it a 3rd declension noun. These nouns always take a single -и in the prepositional case (just like в тетради or о двери), rather than taking an -е or -ии.
Why is the word for science (наука) in the genitive case (науки) here?
The genitive case is used to link two nouns together, which usually translates to the word "of" in English. To say "the field OF science", наука changes to its genitive form, науки.
I usually see область translated as a geographic region. Can it mean "field" in other contexts too?
Yes! While it very often means a province or administrative region (like Московская область), it is equally common in abstract contexts to mean a "field," "sphere," or "domain" of work, study, or knowledge.
Why do we use the preposition в with области instead of на?
Just like in English, you work "in" a field of study. Therefore, Russian aligns perfectly by using в (in) followed by the prepositional case. You use в whether область refers to an abstract field or a physical geographic region.