| 正面 | 58.when 英 [wen]美 [wɛn]     |
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| 背面 |     释义： 1. 同源词：an, one, only.2. an => on- + -e => one.3. an => on- + -ly => only.4. an 其实是 one 的古英语形式。conj. 考虑到；既然；当…时；在…时；如果adv. 什么时候，何时；（用于时间的表达方式之后）在那时；其时；当时pron. 那时；什么时侯n. 时间，时候；日期；场合 例句： 1. The best thing to do when entering unknown territory is smile.踏入未知地带最好的对策就是微笑。 when 什么时候来自PIE*kwo,印欧语疑问代词根，词源同who,where,why,how. whenwhen: [OE] When was formed from the ancient interrogative base *qwo- (source also of English what, who, etc) and a nasal suffix which also appears in then. From the same ancestor, but with an additional dental suffix, came Latin quando ‘when’, source of English quandary.=> quandarywhen (adv.)Old English hwænne, hwenne, hwonne, from Proto-Germanic *hwan- (cognates: Old Saxon hwan, Old Frisian hwenne, Middle Dutch wan, Old High German hwanne, German wann "when," wenn "if, whenever"), from pronominal stem *hwa-, from PIE interrogative base *kwo- (see who). Equivalent to Latin quom, cum. As a conjunction in late Old English. Say when "tell me when to stop pouring you this drink" is from 1889." |