whereyoudaoicibaDictYouDict[where 词源字典]
where: [OE] Where is an ancient Indo-European formation derived from the interrogative base *qwo- (source also of English what, who, etc). In Germanic (where its relatives include Dutch waar, Swedish var, Danish hvor, and the war- of German warum ‘why’) it has largely become limited in its application to ‘place’, but in other branches of the Indo-European language family it performs other interrogative functions: Latin cūr ‘why’, for instance, Welsh pyr ‘why’, and Sanskrit kárhi- ‘when’, beside Lithuanian kur ‘where’.
[where etymology, where origin, 英语词源]
where (adv.)youdaoicibaDictYouDict
Old English hwær, hwar "at what place," from Proto-Germanic adverb *hwar (cognates: Old Saxon hwar, Old Norse hvar, Old Frisian hwer, Middle Dutch waer, Old High German hwar, German wo, Gothic hvar "where"), equivalent to Latin cur, from PIE interrogative base *kwo- (see who). Where it's at attested from 1903.