"说给每个人"是指将信息或消息告诉所有人，英文可以用以下几种表达方式来表示：

announce to everyone
例句：The teacher announced to everyone that there would be a surprise test tomorrow.
翻译：老师告诉每个人明天会有一次意外测试。
tell everyone
例句：I will tell everyone about the party at the office.
翻译：我会告诉每个人关于办公室的派对。
inform everyone
例句：The company has informed everyone that there will be a meeting at 10 am.
翻译：公司已经告诉每个人将在上午10点开会。
let everyone know
例句：Please let everyone know that the meeting has been postponed to next week.
翻译：请告诉每个人会议已推迟到下周。

这些表达方式都是英语中常用的表示"告诉每个人"的短语，它们的意思都是将信息或消息告知所有人。