Breakdown of Vi sänker volymen så att du kan vila på din sittplats.
du
you (singular)
vi
we
vila
to rest
kunna
to be able to, can
Questions & Answers about Vi sänker volymen så att du kan vila på din sittplats.
How does så att affect the word order in the second half of this sentence?
Så att (so that) introduces a consecutive subordinate clause. This means the subject (du) must come right after the conjunction, followed by the finite verb (kan). If there were a sentence adverb like inte (not) here, it would have to go before the verb kan, following the standard subordinate clause word order rules.
Could I use the verb sjunker instead of sänker to mean 'lower'?
No, because sjunker is intransitive (it happens on its own, like a stone sinking or the volume dropping by itself). Since 'we' are actively doing the lowering to a direct object (the volume), you must use the transitive verb sänka (sänker in the present tense).
Why do we use the preposition på instead of i for 'in your seat'?
In Swedish, you sit på (on) a plats (place or designated seat) rather than in it. Using i would sound strangely literal to a Swede, as if you were physically wedged inside the cushion or structure of the chair.
Is sittplats the normal word for 'seat' in all contexts?