• conj. 因為；由于；既然；自…以來；自…以后
• prep. 自…以來；自…以后
• adv. 后來

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。

來自柯林斯例句

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。

來自柯林斯例句

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。

來自柯林斯例句

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。

來自柯林斯例句

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。

來自柯林斯例句