古英語のhis, his, it's から、原ゲルマン語*hiz, this から、PIE*ke, this, here から、語源的には here, he と同じ。
英語の語源
his
his: [OE] His originated as the standard genitive form of the masculine personal pronoun he, with the genitive ending -s – what in modern English would be expressed as of him. But comparatively early in the Old English period it began to replace the ancestral third person possessive adjective sīn (a relative of modern German sein ‘his’), and by the year 1000 it was also being used as a possessive pronoun, as in ‘It’s his’. => he
his (pron.)
Old English his (genitive of he), from Proto-Germanic *hisa (cognates: Gothic is, German es). Originally also the neuter possessive pronoun, but replaced in that sense c. 1600 by its. In Middle English, hisis was tried for the absolute pronoun (compare her/hers), but it failed to stick. For dialectal his'n, see her.
例文
1. The position of the pronoun " his 'shows that it is to be betoned.
代名詞「 his 」の文中の位置は、この語が強調されるべきであることを示している。
2. His hands were too weak to cock his revolver.
彼の手は力がなく、リボルバーの引き金を引くことができなかった。
3.Barry had his nose put out of joint by Lucy 's aloof sophistication.
ルーシーの冷淡さと世故はバリーを不快にさせた。
4.He finished his conversation and stood up,looking straight at me.
彼は話をして立ち上がり、私を直視した。
5.Issues such as these were not really his concern.