【摘要】 钱钟书先生为“当句对”作出质性的界定，是一大贡献；但他认为此格是杜甫　首创，则为失误，早在梁朝何逊的诗中就已出现此种对仗形式。杜甫的贡献是把前人的五律　“当句对”引入七律，并通过创作实践把这种对仗形式推入极至。更多还原

【Abstract】 QIAN Zhong－shu made a great contribution in the qualitative definition of intrasentential antithesis; however, he made a mistake in attributing it to D U Fu who introduced it from HE Xun of the Liang Dynasty and perfected it in his poetic creation.更多还原