same

1、same 的祖先是印欧 *sem-"一、一起"：同族里 some（某个；大约）与它本一个来路；similar（相似的）、simulate（模仿装样）、assemble（集合到一处）、simultaneous（同时发生）、simple（单纯的）全从"一"这根长出。
2、英语本来的"相同"是 ilk，维京人把 same 带过来，日久把老词顶掉——北来客夺了本土位子的罕见案例。
3、辨析一句：equivalent 价值相等、identical 细节全同、equal 数目分量相当、same 普通词可指同一物也可指长得像而实异。some 与 same 读音对照记：/sʌm/ 重读、弱化 /səm/；same /seɪm/。

same 相同的，同样的

来自古英语 same,相同的，同样的，来自 Proto-Germanic*sama,相同的，来自 PIE*sem,一， 一样，一致，词源同 some,homo-.

same

same: [12] Same comes ultimately from Indo- European *somós ‘same’. This also produced Greek homós ‘same’ (source of the English prefix homo-, as in homosexual), and was a variant of the base that gave Latin similis ‘similar’ (source of English similar and simulate), Latin simul ‘at the same time’ (source of English assemble and simultaneous), Latin simplus ‘simple’ (source of English simple).

Latin singulus ‘single’ (source of English single and singular), and English seem and some. The Indo-European adjective passed into prehistoric Germanic as *samaz, which in due course evolved into Old Norse same. The Vikings brought the word with them to England, where it gradually replaced the native terms for ‘same’, ilk and self.

same (adj.)

perhaps abstracted from Old English swa same "the same as," but more likely from Old Norse same, samr "same," both from Proto-Germanic *sama- "same" (cognates: Old Saxon, Old High German, Gothic sama, Old High German samant, German samt "together, with," Gothic samana "together," Dutch zamelen "to collect," German zusammen "together"), from PIE *samos "same," from root *sem- (1) "one," also "as one" (adv.), "together with" (cognates: Sanskrit samah "even, level, similar, identical;" Avestan hama "similar, the same;" Greek hama "together with, at the same time," homos "one and the same," homios "like, resembling," homalos "even;" Latin similis "like;" Old Irish samail "likeness;" Old Church Slavonic samu "himself").

Old English had lost the pure form of the word; the modern word replaced synonymous ilk. As a pronoun from c. 1300. Colloquial phrase same here as an exclamation of agreement is from 1895. Same difference curious way to say "equal," is attested from 1945.

1. Driving a boat is not the same as driving a car.

驾船和开车不是一回事。

2. We were in the same college, which was male-only at that time.

我们那时在同一所学院，当时只招男生。

3. They found their computers producing different results from exactly the same calculation.

他们发现他们的计算机进行完全相同的计算会得出不同的结果。

4. Brian counted to twenty and lifted his binoculars. Elena did the same.

布赖恩数到20，举起了双筒望远镜。埃琳娜也照着做了。

5. We had this understanding that courses were roughly the same weight.

我们已经了解到各门功课差不多一样重要。

【equivalent, identical, equal, same, very】
这组词都有“相同的”的意思，其区别是：
equivalent: 主要指有同样价值、效力或意义的两种不同的事物。
identical: 着重指人或物等在每细节上都完全相同。
equal: 多指在价值等方面相当而不相同的事物。
same: 可指相同的人或物，也可指在质量、外表或意义等方面相同，但实际上有差别的事物。
very: 侧重指完全同一，没有区别。