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 ‘after’ (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 siððan "afterward, from now on, hereafter, further, later, as soon as, after that," originally sið ðan "after that," from sið "after" (see sith) + ðan, weakened form of ðam, dative of ðæt (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.
雙語例句
1. Since the birds interbreed they cannot be classed as different species.
由於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.
自從他來上大學後，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.
“聖誕節以來物價降了4成，”他悲歎道。
來自柯林斯例句
4. The mechanics of the job, however, have changed little since then.
不過，工作流程從那以後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.