by GodWiktionary 原文词源说明Ellipsis of a full oath of the form "I swear by God that …".释义（英文）副词 AdverbUsed as an oath to emphasize the veracity of an associated statement.Used as an intensifier.形容词 Adjective(informal, mildly blasphemous) Genuine, actual.感叹词 InterjectionAn exclamation of surprise.