是集体名词，everyone

everyone 就是集体名词

例句

1、

Everyone experiences these problems at some time in their lives.

每个人在人生的某个阶段都会经历这些问题。

2、

We tried to ensure that everyone got a fair deal.

我们曾尽力保证每个人都受到公平待遇。

3、

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

她就是这么个人儿，能把这事见谁就告诉谁。