出典:Wiktionary
出典:『Wiktionary』 (2025/07/04 14:16 UTC 版)
The a is a reduced form of the preposition on, which was used in 古期英語 with nouns indicating actions or states (e.g. iċ wæs on huntoþe, “I was hunting”). This is the source of such words as asleep and alive, which also show reduction of on to a. In the 中期英語 period, the preposition came to be used with the present participles of verbs as well (formed in -ing), eventually coming to be perceived as a mere prefix.
a- -ing
出典:『Wiktionary』 (2010/05/17 16:25 UTC 版)
The first element is a reduced form of 古期英語 an ("on"); the second element is the Middle English gerund suffix -ing(e) from 古期英語 -ung, -ing. Therefore, I go a-hunting = I go on (a) hunting/I go on a hunt. Due to confusion with the unrelated Middle English Present Participle ending -inge (alteration of -inde from 古期英語 -ende), the use of a(n) preposition (which was fast evolving into a distinct prefix) was extended to present participles (かつ not merely restricted to preceding verbal nouns). With this development, the a- -ing circumfix emerged. Nowadays, in the few dialects of English (such as, notably the 方言 of Smith Island, Virginia) which retain this circumfix, it is only circumfixed to words which function as part of a verb phrase; otherwise, -ing is suffixed.