钱文忠教授曾做客央视《百家讲坛》解读《三字经》,第四讲中有这样一句话:“古人讲的世交就得三代有交情了……”(《钱文忠解读〈三字经〉》第31页)这话说得不准确。世,古称三十年。《说文·卅部》:“三十年为一世。”父子相继大约三十年,所以后来世指父子相继。《字汇·一部》:“父子相代为一世。” Professor Qian Wenzhong has been doing guest CCTV “100 Forum” interpretation of the “Three Character Classic”, the fourth lecture has such a sentence: “The ancients talk about the world have three generations have a friendship ... ...” (“Qian Wenzhong interpretation of” Three Character Classic “ P. 31) Words are inaccurate. World, ancient name thirty years. ”Department of Wen said:“ ”Thirty years as a world.“ ”Father and son have been about thirty years, so later that the world after another father and son. “Vocabulary · a”: “father and son generation for the first generation.”