Noun + はおろか（～も / ～さえ）

[Let alone / Not to mention]

Connection: Noun + はおろか（～も / ～さえ）

Usage: Indicates that something is so extreme that even a lesser or more basic thing applies, let alone the greater thing mentioned first. The first noun represents the more expected or obvious case, and the second noun represents something even more extreme or surprising.

Examples:

漢字はおろか、ひらがなさえ読めない。(He can't even read hiragana, let alone kanji.)

旅行はおろか、近所に出かける余裕もない。(I don't even have time to go to the neighborhood, let alone travel.)

英語はおろか、日本語も満足に話せない。(He can't even speak Japanese properly, let alone English.)