Grammar
N1AI-drafted〜はおろか〜まで
not to mention ...; let alone ..., even ...
Formation
N + はおろか + N + まで(も/さえ/すら/も)
Usage
Puts an obvious, easier case first with はおろか and then adds a more surprising, extreme case with まで/さえ/すら to heighten the effect. The whole sentence usually carries a negative or unexpected tone—something lacking, impossible, or worse than imagined—and the speaker's feeling of astonishment or dismay. It is a written, formal expression; note that it cannot be used to make a request or express intention, unlike 〜どころか, which more often reverses the listener's expectation directly.
Examples
彼は漢字はおろか、ひらがなまで書けない。
かれはかんじはおろか、ひらがなまでかけない。
He can't write kanji, let alone even hiragana.
その村には病院はおろか、診療所まで一つもない。
そのむらにはびょういんはおろか、しんりょうじょまでひとつもない。
That village has no hospital, and not even a single clinic.
事故で彼は全財産はおろか、家族の信頼までも失ってしまった。
じこでかれはぜんざいさんはおろか、かぞくのしんらいまでもうしなってしまった。
In the accident he lost all his property, and even his family's trust.