unless的词源

英文词源

unless (conj.)

mid-15c., earlier onlesse, from (not) on lesse (than) "(not) on a less compelling condition (than);" see less. The first syllable originally on, but the negative connotation and the lack of stress changed it to un-. "Except could once be used as a synonym for unless, but the words have now drawn entirely apart" [Century Dictionary].

中文词源

unless：除非

来自短语on less (than), 在少于的情况下，后由于该短语的否定含义，介词on被改写成了un.词义演变比较despite, in spite of .

该词的英语词源请访问找单词词源英文版：unless 词源，unless 含义。

unless：除非

来自短语 on less (than),在少于的情况下，后由于该短语的否定含义，介词 on 被改写成了 un. 词义演变比较 despite,in spite of .