Further "で as 動作を行うときの様態 vs で as だ" clarifications


asked this a while back: [で as 動作を行うときの様態 vs で as
だ](https://japanese.stackexchange.com/questions/62877/%e3%81%a7-as-%e5%8b%95%e4%bd%9c%e3%82%92%e8%a1%8c%e3%81%86%e3%81%a8%e3%81%8d%e3%81%ae%e6%a7%98%e6%85%8b-vs-%e3%81%a7-as-%e3%81%a0).
But i don't feel this aspect has ever become intuitive at all, especially for
adjectives.

eg.

> 爽やかで抜けるような青空と、この香りとは対照的に、大きくせり出した柵のグレーが強い拒絶を示している。

(speaker in a prison by the ocean) The gray of the large jutting fence shows a
strong rejection in contrast to the "爽やかで抜けるような(invigorating, like it was
escaping)" sky and ocean scent.

> 結果は今ひとつでナンパにも技術が必要だと身にしみた

In the end I have come to realize "今ひとつで(i am lacking?)", even nanpa requires
considerable skill.

i lean towards で as だ for both of these, but it's an very disjunctive read and
very hard to naturally translate.

When does someone purposely choose to use this sort of sentence structure?




In both of your examples, で is not a particle but the te-form of the copula だ.

> 爽やか **で** 抜けるような青空

Here, で is used to [join na-
adjectives](https://japanese.stackexchange.com/q/11198/5010) (e.g., 簡単で便利な
"easy and handy"). 爽やかな and 抜けるような both modify 青空. Note that the adverbial
form of a na-adjective ends with に (e.g., 爽やかに "refreshingly").

> 結果は今ひとつ **で** ナンパにも技術が必要だと身にしみた。

This is a rather simple compound sentence made by joining the following two
sentences using the te-form of だ:

>
> 結果は[今一つ](https://jisho.org/word/%E4%BB%8A%E4%B8%80%E3%81%A4)だった。ナンパにも技術が必要だと身にしみた。  
>  The result was less than satisfactory. I realized even _nampa_ requires
> some skill.

This 今一つ is a lexicalized no-adjective. If this で were 様態のデ, 今一つで would have
to modify the following predicate, which is 必要だ, but "I realized I
unsatisfactorily need skill" would make no sense.




In both of your examples, で is not a particle but the te-form of the copula だ.

> 爽やか **で** 抜けるような青空

Here, で is used to [join na-
adjectives](https://japanese.stackexchange.com/q/11198/5010) (e.g., 簡単で便利な
"easy and handy"). 爽やかな and 抜けるような both modify 青空. Note that the adverbial
form of a na-adjective ends with に (e.g., 爽やかに "refreshingly").

> 結果は今ひとつ **で** ナンパにも技術が必要だと身にしみた。

This is a rather simple compound sentence made by joining the following two
sentences using the te-form of だ:

>
> 結果は[今一つ](https://jisho.org/word/%E4%BB%8A%E4%B8%80%E3%81%A4)だった。ナンパにも技術が必要だと身にしみた。  
>  The result was less than satisfactory. I realized even _nampa_ requires
> some skill.

This 今一つ is a lexicalized no-adjective. If this で were 様態のデ, 今一つで would have
to modify the following predicate, which is 必要だ, but "I realized I
unsatisfactorily need skill" would make no sense.

