"I will lose my voice soon."
Translation:Jag tappar snart rösten.
The reason you can't say Jag ska tappa rösten snart instead is that ska always carries some kind of intention. If you say ska, you're also saying that somebody wants something to happen. If you say it in a sentence like Jag ska tappa rösten snart, without any other context, it must mean that you intend to lose your voice soon. (And even if you really wanted to say that, it still wouldn't translate the English sentence here).
No. It sounds strange to say it like that, as if you were purposely losing your voice permanently.
Would "Jag tappar min röst snart." also work? To me it sounds a bit dramatic to say: I (will) lose the voice soon. Is this common in Swedish? And if so, in what other cases would you use | pronoun I/me + verb + noun(article) | instead of | pronoun I/me + verb + possessive pronoun + noun(article)? |
It's an accepted answer, but yes, we do use the definite a lot when it's clear from context that we're talking about our own one. Use min here isn't wrong but it sounds somewhat unnatural to me (I mean, it's really, really obvious whose voice you're speaking about in this sentence, right?), so that would be more dramatic than just going with rösten. There's a thread about this phenomenon here: https://www.duolingo.com/comment/6014446