Breakdown of Fälgen blir polerad av mekanikern.
bli
to become
av
of, by / from (cause)
mekanikern
the mechanic
fälgen
the rim
Questions & Answers about Fälgen blir polerad av mekanikern.
Why does this sentence use blir instead of är to mean 'is'?
This highlights the difference between dynamic and stative passives. We use blir (literally 'becomes' or 'gets') because the action is happening right now: the mechanic is actively polishing the rim. If you said Fälgen är polerad, you would be describing a finished state: 'The rim is (already) polished.'
Could I use the s-passive here and say Fälgen poleras av mekanikern?
Yes, absolutely! Fälgen poleras and Fälgen blir polerad mean exactly the same thing in this context. The s-passive is a bit more common in writing, whereas the bli + participle structure is very common in everyday spoken Swedish and emphasizes the process of something happening.
Why does the participle end in -d (polerad) rather than -t (polerat)?
In Swedish, past participles used with bli or vara must agree with the subject, just like regular adjectives. Since fälgen is an en-word in the singular, the participle takes the matching en-word ending -d. If the subject were an ett-word (like golvet, the floor), it would be golvet blir polerat.
Why do we use av to mean 'by' here?