sometimesWiktionary 原文中文来自 ECDICTadv.有时，时常，往往构词拆分sometime词根/词干+-s后缀Used to form regular plurals of nouns. · Used to form many pluralia tantum (nouns that are almost or entirely without singular forms).演变路径（由近及远）英语继承自 ←中古英语 sumtymes词源说明From Middle English sumtymes, somtymes, som tymes, equivalent to sometime + -s (adverbial suffix). Compare West Frisian somstiden (“sometimes”), Dutch somtijds, somwijlen (“sometimes”).释义（英文）副词 AdverbOn some occasions, over some periods, or in certain circumstances, but not always. [from 16th c.](obsolete) On a certain occasion in the past; once. [16th–17th c.]形容词 Adjective(obsolete) Former; sometime