| 词汇 | extra |
| 词根词缀 | 词源： 1654, modern usages -- including sense of "minor performer in a play" (1777) and "special edition of a newspaper" (1793) -- all probably are from shortenings of extraordinary, which was used extensively in 18c. as n. and adv. in places we would use extra today. The prefix extra- was only recorded in classical L. in extraordinarius, but has been much used in modern formations such as extraterrestrial (1860s as an adj.; 1963 as a n.), and represents the old fem. abl. of exterus "outward, outside." 词根记忆： a. 额外的,附加的n.附加物,额外的东西The extra theme of the supreme scheme is an extreme secret.至高无上的计划的额外主题是个极端机密. a. 额外的[extr(e),exter=out表示"出去"] |
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