Breakdown of Плохая погода осенью — это неизбежная данность.
это
this / it is
плохой
bad
погода
the weather
осенью
in autumn
Questions & Answers about Плохая погода осенью — это неизбежная данность.
Why is осень in the instrumental case (осенью) here?
In Russian, the instrumental case is often used to turn a season or a time of day into an adverb meaning "in the" or "during the". So the noun осень (autumn) becomes осенью (in autumn). You have likely seen this before with утро, which becomes утром (in the morning).
Why do we use a dash and это before неизбежная данность?
When both the subject (погода) and the predicate (данность) are nouns in the nominative case, Russian uses a dash to link them in the present tense, taking the place of the verb "to be". Adding это is optional but very common; it emphasizes the connection, similar to saying "Bad weather... that is an inevitable given."
Since this lesson is about the predicative pronoun таков, how could we use it to express a similar idea?
You could rephrase the thought as Такова осень: плохая погода — это неизбежная данность (Such is autumn: bad weather is an inevitable given). The pronoun такова matches the feminine noun осень and translates as "such is" or "that is the nature of".
How is the noun данность (a given) formed?