Breakdown of Через неделю стоматолог посмотрит пломбу.
неделя
week
посмотреть
to watch (perfective) / to look at (perfective)
стоматолог
dentist
через
in (after a period of time)
Questions & Answers about Через неделю стоматолог посмотрит пломбу.
Why does the word for week change to неделю after через?
The preposition через requires the Accusative case when talking about future time. Because the dictionary form неделя (week) is a feminine noun ending in -я, it changes to неделю in the Accusative case.
I learned that через means "across" or "through". How does it mean "in" here?
You are right about physical movement, like walking "across" a street. But when you use через with a block of time, it shifts meaning to "in" or "after" that amount of time has passed. So через неделю means "in one week".
Why does посмотрит mean "will look"? Where is the future tense word for "will"?
You do not need a helper word like будет here because посмотреть is a perfective verb. Perfective verbs describe a completed result. When you give them present-tense endings, they automatically jump to the future tense. You only use будет with imperfective verbs.
Why is the word for "filling" spelled пломбу at the end?
The filling is the direct object receiving the action (it is what the dentist is looking at), so it must be in the Accusative case. The dictionary form is пломба (feminine), and feminine nouns ending in -а change to -у in the Accusative case.