I am sorry to have kept you waiting for two hours.请问这里句子是怎样构

I am sorry to have kept you waiting for two hours.请问这里句子是怎样构 i am sorry to have kept you waiting. I am sorry to have kept you waiting for a long time. I am sorry to have kept you waiting.这句话的谓语是? I am t__ sorry I have kept you waiting long. you kept me waiting for two hours.为什么用 kept,而不用have kept. I am sorry to have you kept you waiting.句中不定式作什么成分 --i am sorry to have kept you waiting long ---never mind .i i am sorry to have kept you waiting 中的to 后面是什么成分啊? I am sorry to have kept you waiting.---Oh,not at all.I__here 分析语法 i'm sorry to have kept you waiting. I'm sorry to have kept you waiting.