how should I know?/how am I to know?/how do I know?NOT KNOWused to say that it is not reasonable to expect that you should know something 我怎么知道?我怎么会知道?〔表示要求你知道某事是没有道理的〕 ‘When will they be back?’ ‘How should I know?’ “他们什么时候回来?”“我怎么知道?”
→ how should I know?/how am I to know?/how do I know? at know1(SPOKEN SECT)