“之”,人们大多熟悉它的他称代词和结构助词(相当于现代汉语“的”)用法,却往往忽视了它还是一个指示代词。请看下面三例: ①吾闻之:一日纵敌,数世之患也。(《左传·僖公十三年》) ——我听说过这么一句话:一天放走故人,就是几代人的后患。 Most of them are familiar with its use of pronouns and structural auxiliary words (equivalent to modern Chinese), but they often neglect it as a demonstrative pronoun. Look at the following three cases: ① I smell: one day domineering, suffering from the worlds also. (“Zuo Xi 僖 male thirteen years”) - I have heard such a sentence: let go of an enemy one day, that is, generations of troubles.