回答：at a meeting和in a meeting都可以说，请看实例(大都出自权威词书)：Officially, the director is in a meeting, though actually he’s playing golf. 据说主任正在开会，可他实际上正打高尔夫球呢。——见《牛津高阶英汉双解词典》(第四版) (officially词条)I’m tied up in a meeting until 3 pm. 我开会直到下午三点钟方可脱身。——见《牛津高阶英汉双解词典》(第四版) (tie词条)Sorry to keep you waiting—I got stuck in a meeting. ——见《朗文当代英语词典》(1995年版) (keep词条)Mrs Lavelle is in a meeting at the moment. ——见《朗文当代英语词典》(1995年版) (meeting词条)There were three others present at the meeting besides us. 除了我们之外，还有其他三人个出席了会议。——见《朗文多功能分类词典》(besides词条)He took the chair at a meeting some time ago. 前些日子他主持了一次会议。——见王福祯编著《新时代英语惯用法词典》第195页。There were both blacks and whites at the meeting. 参加会议的有黑人也有白人。——见周贞雄编著《大学英语重点词用法手册》besides词条)She might be invited to speak at the meeting. 她可能被邀在会上发言。——见张道真编著《张道真英语语法》第116页。
旭子如风
