Breakdown of При необходимости мы поможем вам при подключении интернета.
мы
we
вы
you (plural)
интернет
internet
помочь
to help (perfective)
Questions & Answers about При необходимости мы поможем вам при подключении интернета.
Why does this sentence use при twice, and do they mean the exact same thing?
They show two different uses of при. In при необходимости, it sets a condition ('in case of' or 'if there is a necessity'). In при подключении, it describes the surrounding circumstances or time of an action ('during' or 'while'). Both require the Prepositional case.
Why does необходимости end in -и here instead of the standard Prepositional -е?
The word необходимость (necessity) is a feminine noun ending in a soft sign. These belong to the 3rd declension, which always takes an -и ending in the Prepositional case, rather than -е. It is an easy rule to forget!
Could I just say если нужно instead of при необходимости?
Absolutely. Phrases like если нужно or если необходимо are perfectly natural everyday alternatives. при необходимости is just a slightly more formal, highly common set phrase that elegantly condenses the 'if' clause into a single prepositional phrase.
Why is интернета in the Genitive case?
It answers the question 'connection of what?'. Because подключение (connection) is a noun formed from a verb, the thing being connected becomes its target. In Russian, the object of a verbal noun goes into the Genitive case.