since

英 [s?ns] 美[s?ns]

基本詞匯CET4TEM4考研CET6高頻詞

since 自從，后來，因為

來自中古英語 sinnes,縮寫自 sithence,來自 sithen,在此以后，-es,-ce,副詞后綴，來自古英語 siththan,合成自短語 sith thaem,在此以后，來自 sith,自從，之后，thaem,那，與格形式于 that. 參照 sith,自從，之后。

since: since: [15] Since is a contracted form of Middle English sithenes ‘since’. This in turn went back (with the addition of a final -s) to Old English siththan, a compound adverb and conjunction formed from sīth ‘a(chǎn)fter’ (a relative of German seit ‘since’) and thām ‘that’.
since (adv.): early 15c., synnes, from sithenes "since," from sithen (plus adverbial genitive -es), from Old English sieean "afterward, from now on, hereafter, further, later, as soon as, after that," originally sie ean "after that," from sie "after" (see sith) + ean, weakened form of eam, dative of e?t (see that).

As a conjunction from late 14c.; as a preposition from 1510s; "from the time when," hence "as a consequence of the fact that." Modern spelling replaced syns, synnes 16c. to indicate voiceless final -s- sound. Since when? often expressing incredulity, is from 1907.

1. Since the birds interbreed they cannot be classed as different species.: 由于這些鳥進行雜交繁殖，不能把它們歸為不同的物種。

2. I've had the hots for him ever since he came to college.: 自從他來上大學后，我就對他春心萌動。

3. "Prices are down 40 per cent since Christmas," he lamented.: “圣誕節(jié)以來物價降了4成，”他悲嘆道。

4. The mechanics of the job, however, have changed little since then.: 不過，工作流程從那以后就幾乎沒有任何變化。

5. Rock'n'roll has become so commercialised and safe since punk.: 搖滾樂自從朋克樂以后就已經(jīng)過于商業(yè)化而缺乏新意了。