Although punctual himself, the professor was quite used to students' being late for his lecture.这句late for是什么意思,为什么用for, although punctual himself 这是什么结构

Although punctual himself, the professor was quite used to students' being late for his lecture.这句late for是什么意思,为什么用for, although punctual himself 这是什么结构
Although punctual himself, the professor was quite used to students' being late for his lecture.
这句late for是什么意思,为什么用for,
although punctual himself 这是什么结构

Although punctual himself, the professor was quite used to students' being late for his lecture.这句late for是什么意思,为什么用for, although punctual himself 这是什么结构
Although punctual himself=Although he was punctual himself
be late for his lecture(上他的课迟到）
be late for固定搭配的.……迟到……
译文：
尽管教授自己很准时,他却相当习惯了学生们上他的课迟到.
be used to习惯于
students' being late学生们的迟到