I'm sorry to have kept you waiting so long 和i' m sorry to keep you waiting so long 有啥区别

I'm sorry to have kept you waiting so long 和i' m sorry to keep you waiting so long 有啥区别
英语人气:942 ℃时间:2019-11-13 03:57:47
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I'm sorry to have kept you waiting so long.to have kept you waiting so long.不定式的完成形式表示【等待的动作已经结束】.I' m sorry to keep you waiting so long.to keep you waiting so long.不定式的一般形...
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