alone

• adj.一人で; 孤高の; 孤高の
• adv.一人で;孤独な

all one .

alone

alone: [13] Although partly disguised by its pronunciation, alone is in fact simply a compound of all and one (whose /wun/ pronunciation began to develop around the 15th century). In Old English it was a completely separate phrase, all āna, literally ‘completely by oneself’, but by the 13th century this had coalesced into a single word. Loss of its initial ain the 14th century gave rise to the adjective lone.
=> all, lone, one

alone (adj., adv.)

c. 1300 contraction of all ane, from Old English all ana "unaccompanied, all by oneself," from all "all, wholly" (see all) + an "one" (see one). Similar compounds are found in German (allein) and Dutch (alleen).

1. If you 're lonely when you 're alone ，you 're in bad company.--Jean Paul Sartre

もしあなたが一人でいるときに寂しさを感じたら、自分をうまく付き合わなかったことを意味します。

毎日一言

2.Don 't leave a child alone in a room with an open fire.

部屋に裸の火があるときは、子供を一人にしないでください。

3.He knew when to leave well alone and when to interfere.

彼はいつほどほどにすべきか、いつ介入すべきかを知っている。

4.He had always been an outcast,unwanted and alone .

彼はずっと異種視されていて、誰も相手にしていない、形だけ。

5.He was working alone and did not have an accomplice.

彼は単独で働いており、仲間はいない。