In a different thread, a poster corrected something I had written by saying
Would it be correct to say that you cannot omit the pronoun hän because a 3rd person singular verb without a subject could be interpreted in a very different way (i.e., the "nollapersoona" construction)?Btw, note that in the standard language you shouldn't drop the subject and keep the predicate when you're talking in the 3rd person singular/plural: olen kotona, olet kotona, hän on kotona, olemme kotona, olette kotona, he ovat kotona.
Kysyin häneltä, milloin hän lähtee lomalle. "I asked him when he is going on vacation"
Kysyin häneltä, milloin lähtee lomalle. ~"I asked him when one can go on vacation."
However, if this is true, it doesn't seem to explain why the 3pl pronoun he cannot be omitted: for example,
Kysyin heiltä, milloin (he) lähtevät lomalle.
If you leave out he in this sentence, does it lead to a different interpretation than you get when he is included?