YOU CANNOT / COULD NOT BUT ...


Meaning of YOU CANNOT / COULD NOT BUT ... in English

( formal ) used to show that everything else is impossible except the thing that you are saying :

What could he do but forgive her? (= that was the only thing possible)

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.