なので or ですので?

[thegooseking]

みなさん、こんにちは、

I know that な- and の-adjectives take なのです instead of just のです if you're trying to soften the sentence.
綾音さんは病気なのです。

I think (but I'm not 100% sure) that the conjunction ので is just the て-form of のです, so would it also take a な for な- and の-adjectives?
綾音さんは病気なので、今日学校にきないとおもいます。

Or would you use ですので, like you would ですから? (My grammar book calls ので and から "essentially interchangeable" in this context.)
綾音さんは病気ですので、今日学校にきないとおもいます。

よろしくおねがいします、
小狼

[mmmason8967]

小狼さん、こんにちは。

My understanding of the way のです works is that the verb that comes just before it needs to be in plain form, and if the verb is だ you replace it with な. So your first sentence would probably have started out as 綾音さんは病気です and to add のです you change the polite です to the plain だ, then you have to change that だ to な and so you end up with 綾音さんは病気なのです (which is what you had for different reasons).

I'm pretty sure you're right about ので being the continuative form of のです. That being the case, it would work exactly the same way (です ⇒ だ ⇒ な), so I think the longer sentence would be your first version: 綾音さんは病気なので、今日学校にきないとおもいます。

マイケル

[thegooseking]

マイケルさん、

Huh, I never looked at it as な replacing だ, but it makes sense. I was thinking of の as a pronoun, のです really being the main clause, and the rest of the sentence being a subordinate clause to describe that pronoun (this is essentially the same way の works as a verb nominaliser - under the hood, it's actually a pronoun (or quasi-pronoun, if you prefer) described by a subordinate clause). As we know, subordinate clauses cannot end in だ or です, so that would explain replacing it with な.

ありがとうございます、
小狼

[community.japanese]

マイケルさん、小狼さん、
こんにちは。
疑問は明らかになりましたね。
一つだけ、「綾音さんは病気なので、今日学校にこないとおもいます。」が正しいですね。
Yuki 　由紀
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