是集體名詞，everyone

everyone 就是集體名詞

例句

1、

Everyone experiences these problems at some time in their lives.

每個人在人生的某個階段都會經歷這些問題。

2、

We tried to ensure that everyone got a fair deal.

我們曾盡力保證每個人都受到公平待遇。

3、

It's just like her to tell everyone about it.

她就是這麼個人兒，能把這事見誰就告訴誰。