I'm sorry I'm so late.Sally .Have you been waiting long?

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I'm sorry I'm so late.Sally .Have you been waiting long?
求这句话精确翻译!
这里面表示强调的so 只能放在中间吗?
Have b een done 是过去完成时把?我一直分不清楚过去完成时和现在完成的区别啊.

so 修饰形容词LATE ‘ 如此迟’
have been done 是完成时的被动语态.
have been doing 是现在完成进行时
have done 是现在完成时
had done 是过去完成时
再问：那什么叫现在完成时什么叫，过去完成时？用通俗易懂的话解释下
再答：现在完成时（ have +done）表示过去发生的动作对现在造成的影响或结果。
过去完成时（had+ DONE）表示过去的过去已经完成或发生了的动作。
如
He has lived here for ten years.
The train had left since he got to the station

I'm sorry to have kept you waiting so long. I'm sorry to have kept you waiting so long 和i' m sorry to ke I am sorry you have been waiting so long .BUT I‘m sorry to have you waiting so long for Marcia ,and I’m af I'm sorry to have you waiting so long for Marcia ,and I’m af I`m sorry you`ve been waiting so long,but it`ll still be som I'm sorry.I have kept you ()for me so long.A:wait B:waiting I'm sorry to keep you waiting so long 单选题 ---I’m sorry to have kept you waiting so long.--- 1.Don’ 初中英语I'm sorry to have you waiting for so long for Marcia,and I'm sorry to have you .so long这里为什么用waiting? before和till的区别例 i'm sorry you've been waiting so long,but i