题目内容：

The reason why he was late was his always being late for school.

优质解答

语法上是没有错的,但是逻辑上行不通.
后面的his always being ...是分词-ing形式以属格形式做表语,表现在以及主动.
中文翻译是：他之所以迟到的原因是他总是上课迟到.
感觉怪怪的.