Let alone... _(부정문) ~은 말할것도 없고

Let alone... 

부정문에서, ~은 말할것도 없고

Let alone뒤에는 동사원형 or 명사

-He couldn't boil water, let alone prepare a dinner for eight.

-I can't speak English, let alone Chinese.

-I don't like to swim, let alone dive.

-She has never served a drink, let alone food.

-He doesn't talk, let alone a greeting.

-He doesn't introduce himself, let alone say 'hello'