“曾经”是一个经过虚化后演变并一直沿用到现代汉语中的副词。它虚化成词的时间不会早于梁代。受六朝汉语词汇双音化潮流的影响,“曾”与“经”同义复合构成了双音节词“曾经”。从内部的关系来说,由于经常出现在谓语动词的前面,“曾经”的语义逐渐抽象化,凝固成词,从而最终虚化为副词。 “Once ” is an adverb that has evolved after being defocused and has been used in modern Chinese. It will not be earlier than Liang’s generation. Influenced by the double-tonal trend of the Chinese lexicon in the Six Dynasties, “Zeng” and “Jing” are synonymous with the two-syllable words “once”. In internal relations, the semantics of “ever ” are gradually abstracted and frozen into words because they often appear in front of the predicate verb, eventually becoming the adverbs.