Breakdown of Бывало, комары кусали так сильно, что мы уходили на чердак.
мы
we
на
on, at / by (transport) / to (a place) / to (in answer to)
что
that (conjunction)
так
so, like this
Questions & Answers about Бывало, комары кусали так сильно, что мы уходили на чердак.
Why do we use the imperfective verbs кусали and уходили for a sequence of events? Doesn't a sequence usually require the perfective?
Usually, yes! A chain of completed actions (A happened, then B happened) takes the perfective aspect. But because this sentence describes a repeated sequence in the past (the mosquitoes would bite, and then we would leave, time and time again), Russian uses the imperfective for the whole chain. The introductory word бывало sets the stage for this recurring habit.
How does the word бывало function at the start of the sentence?
Бывало is the impersonal past-tense form of бывать (to occur/happen regularly). Here, it acts as an introductory word set off by a comma, meaning "it used to happen that..." or "sometimes...". It's a very natural way for Russians to introduce a recurring memory or a nostalgic habit.
Why do we say на чердак instead of в чердак?
The noun чердак (attic) is one of those locations that historically pairs with the preposition на rather than в (similar to на балкон or на кухню). Because уходили implies motion toward a destination, чердак is in the accusative case here. If you were just hanging out in the attic, it would be the prepositional case: на чердаке.
How would this sentence change if this exact sequence only happened once?