I saw the following statement in a grammar book:

接続助詞 'ので' can only be placed after 用言 and 助動詞 in form of 連体形.

But in another text book it says that ので can also be placed after a noun, and then the noun is concatenated with な, e.g. 時間なので.

Is 'noun + な + ので' a special case? Is role of 'ので' here different from being placed after a verb/adj?

I searched similar questions:

  1. adj. + な (noun) + な versus (verb) + な
  2. noun + な (but didn't cover whether in scope of 接続助詞) What does "nanode" mean? What are its grammatical rules?
  • な is a form of the copula, so in 'noun + な + ので' ので is preceded by a verb. Commented Feb 2, 2019 at 16:46
  • By 'conjected' did you mean 'conjugated'? Commented Feb 2, 2019 at 16:47
  • な is a (limited) 連体形 of だ.
    – Angelos
    Commented Feb 2, 2019 at 16:49
  • @MathieuBouville thanks for the word suggestion, I meant 'concatenated', but chose a wrong word. I've updated the post.
    – Karata
    Commented Feb 5, 2019 at 3:24
  • Thanks both for the information. Is there a guidance when 'な' could be placed after noun?
    – Karata
    Commented Feb 5, 2019 at 3:27


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