大家注意了用英文怎么说

"Attention, everyone" 或 "Everyone, pay attention" 是用英语表达“大家注意了”的常用说法。这个短语来源于英语中表达“注意”的常用词汇 "attention" 和 "everyone" 的组合。

例句：

Attention, everyone. The meeting will begin in five minutes. (大家注意了，会议将在五分钟后开始。)
Everyone, pay attention. The teacher is about to start the lesson. (大家注意了，老师将要开始上课。)