I'm doing exercises and i found in the text, "через неделю" and in parentheses it says "in two weeks time". I looked up через, a preposition with the accusative case, and for the 'time' definition it said;
(time) in, after:
Я бу́ду петь пе́сню че́рез пять мину́т. I will sing a song after five minutes.
че́рез день every other day
The latter implies a cycle of two, so to speak... But is "two" always associated with через? Apparently not in the sing a song example...
Isn't через just "in, after"? Where did the two come from?
PS. No tags for preposition? Nor accusative? Nor case? ?