Some people say a ~ or one ~ to emphasize that something is very good, very bad, or very big. (INFORMAL)
It taught me a ~ lot about myself...
The man did one ~ job getting it all together.
= a hell of a, one hell of a
ADJ: a/one ADJ n emphasis
Some people say a ~ or one ~ to emphasize that something is very good, very bad, or very big. (INFORMAL)
It taught me a ~ lot about myself...
The man did one ~ job getting it all together.
= a hell of a, one hell of a
ADJ: a/one ADJ n emphasis
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012