“someone”是什么意思？是单数还是复数？

是某人的意思。

是单数的概念。

例句：Someone  has  taken  away  my  book.

有人拿走了我的书。

1.表代词: 某人;有人:

Someone called you just now.

刚才有人给你打过电话。

Are you expecting someone this afternoon?

今天下午你是不是等什么人?

Someone left this for you.

有人把这留给你。

2.表名词: 要人，大人物

If you had studied harder, you might have become someone.

如果你当初学习努力的话,你或许已经成了重要人物了。