I'm really sorry for being late again.这里的BEING为何要用ing形式啊?

I'm really sorry for being late again.这里的BEING为何要用ing形式啊? -Sorry for being late again. i'm sorry for being late. l'm sorry for my being late again.的同意局是? i'm sorry for being late for class I’m sorry for being late school.从being late for school (划线部分 I'm ___(terrible) sorry for being so late. i'm sorry for being late 怎么翻译 为什么 I am sorry for being late Sorry for being late again.___here on time next time,or I wo I’m_(terrible)sorry about being late again Sorry for being late agin