已认证十年磨剑穷文尽理今朝抒鸿鹄志，一旦试锋安国定邦他日成栋梁材。
关于“缺席”的英语表达及用法，综合权威资料整理如下：
一、核心表达
- absence
（名词）：表示“缺席”本身，例如：> His absence was felt by everyone.（他的缺席被每个人感受到）
- absent（形容词/副词）：表示“缺席的”或“未出席”，例如：
> The meeting was attended by only a few absentees.（会议只有少数缺席者）
- absent from（介词短语）：表示“从...缺席”，例如：
> She was absent from class yesterday.（她昨天缺席了课堂）
短语表达
- be absent from： 常用结构，例如： > The company was absent from the meeting.（公司缺席了会议） - absent oneself from
> He absent himself from the discussion.（他主动回避了讨论）
- absentee ballot：特指“缺席投票”，例如：
> The teacher used an absentee ballot for the absent students.（老师为缺席学生使用了缺席投票）
二、典型句型
- Why was/are you absent from...？
> Why was John absent from the meeting？（约翰缺席会议的原因是什么？）
描述缺席后果
- The team's performance was weakened by his absence.（他的缺席削弱了球队的实力）
- His long absence put him far behind in his studies.（他长期缺席导致学业落后）
表达遗憾或推测
- It's unfortunate that you were absent.（你缺席真遗憾）
- I suspected he was absent because of the weather.（我猜他因天气缺席）
三、注意事项
时态搭配： 现在时：He is absent today. 过去时：He was absent yesterday. 
完成时：He has been absent for two weeks.
替代表达：
用"be missing"表达"未归"（如：He's missing today），需结合上下文选择使用。
通过以上结构与例句，可灵活运用"缺席"相关表达。
