absence的过去式是什么？

1:absence 是名词，没有过去式。

eg: I failed to pass the final exam mainly due to frequent absence.

我没有通过期末考试，很大一部分是因为出勤率不高。

2:absent 形容词.

形容词 absent

eg: Sorry i might be absent from your birthday celebration as I had important meeting to attend.

非常抱歉，你生日那天我要出席一个特别重要的会议，估计没有办法和你一起庆祝了。