“何况”和“况且”都可以连接分句、句子;两者都可以表示追加补充理由。但是由于两词发展过程、语义背景的不同,它们之间也存在细微的差异。本文主要讨论以下三个问题:(1)讨论“何况”和“况且”的基本的递进格式与表达功用,分别从关联方式、连用方式、表达作用等方面展开;(2)各自的用法特点与语义差异;(3)相互的选择方式与细微差异。 “Not to mention ” and “Moreover ” can connect clauses, sentences; both can be said to add additional reasons. However, due to the different development process and semantic background of the two words, there are also subtle differences between them. This article mainly discusses the following three questions: (1) discuss the basic progressive format and expressive function of “not to mention” and “notation”, respectively, from the aspects of association way, conjunctive way and expression effect; (2) Their usage characteristics and semantic differences; (3) the mutual choice of ways and subtle differences.