| 词汇 | sure |
| 词根词缀 | 词源： c.1300, "safe, secure," later "mentally certain" (c.1450), from O.Fr. sur, seur "safe, secure," from L. securus "free from care, untroubled, heedless, safe" (see secure). Pronunciation development followed that of sugar. As an affirmative meaning "yes, certainly" it dates from 1803, from M.E. meanings "firmly established, having no doubt," and phrases like to be sure (1657), sure enough (1545), and for sure (1586). The use as a qualifier meaning "assuredly" goes back to 1425. Sure-footed is from 1633; sure-fire first attested 1901; sure thing dates from 1836. In 16c.-17c., Suresby was an appellation for a person to be depended upon. 词根记忆： a. 肯定的;一定会…的;有信心的,有把握的I assure the injured jury that a sure insurance is ensured.我让受伤的陪审团确信一笔有把握的保险得到的确保. |
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