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I made sure to check if this had already been answered but I could not find
one. So my question is: is なんだから related to のだ? Looking at some example
sentences it seems to imply something like that but I'm not sure. I can't see
to find a definitive answer.
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2016-02-11T00:35:32.607
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question
grammar
Is なんだから is related to のだ?
なんだから is an abbreviated form of なのだから, which contains 「のだ」, so in that sense
they are the same. But depending on where you see the のだ, the meaning may be
different. For example these two sentences have a different usage of のだ: 食べるのだ
and 僕のだ
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2016-02-11T00:42:18.257
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answer
...なんだから is related to のだ through various processes at work here. There is a
simple contraction here, i.e. なんだから -> なのだから.

Let's split this phrase up into the individual bits: な+のだ+から.

The な is required before using のだ when the preceeding work is a noun or na-
adjective; in other words, in sentences that would end in です (だ). This is
similar to how sentences that end with ~と思う require the subphrase to be marked
with the copula (i.e. ~だと思います).

Hopefully this will help clear up some ambiguity.
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2016-02-11T02:46:56.957
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answer