Lesson 88 Trapped in a mine困在矿井里

　　First listen and then answer the question.

　　听录音，然后回答以下问题。

　　Why is the rescue taking so long?

　　Six men have been trapped in a mine for seventeen hours. If they are not brought to the surface soon they may lose their lives. However, rescue operations are proving difficult. If explosives are used, vibrations will cause the roof of the mine to collapse. Rescue workers are therefore drilling a hole on the north side of the mine. They intend to bring the men up in a special capsule. If there had not been a hard layer of rock beneath the soil, they would have completed the job in a few hours. As it is, they have been drilling for sixteen hours and they still have a long way to go. Meanwhile, a microphone, which was lowered into the mine two hours ago, has enabled the men to keep in touch with their closest relatives. Though they are running out of food and drink, the men are cheerful and confident that they will get out soon. They have been told that rescue operations are progressing smoothly. If they knew how difficult it was to drill through the hard rock, they would lose heart.

　　6个人被困在矿井里已有17个小时了。如果不把他们尽快救到地面上来，他们就有可能丧生。然而，事实证明营救工作非常困难。如果用炸药爆破，震动会 引起矿顶塌落。因此，营救人员在矿井的北侧钻了一个洞。他们准备用一种特制的容器把这6个人救上来。如果不是因为土壤下面有一层坚硬的岩石，他们的营救工 作仅用几个小时就可以完成了。实际情况是，他们已连续钻了16个小时了，但离钻透还早着呢。与此同时，两个小时以前放下井去的一只麦克风使井下的人可以与 其亲属保持联系。虽然他们的食物和饮料都快消耗尽了，但这些人的心情很好，坚信他们很快就会出去。他们一直被告知营救工作进行得非常顺利。如果他们知道了 钻透那坚硬的岩石有多么困难，他们会丧失信心的。

参考《have been doing和have done 的区别》与《曹老师对四个问题的解答，我在温习是遇到的问题》

中的原文：

“如果教英语是一个人临时的工作（即临时、短期的、预计会结束的习惯，则谈论这个习惯时就需要用进行体。I’m teaching English at a night school these days.”

“终结动词的完成体不可以和持续时间状语连用，除非该for短语按照目的状语理解（实际是终结动词导致的结果状态的持续时间，而该持续时间是主语预先计划或打算的。例如 He has gone to Beijing for 2 weeks.)。”

我的疑问1：why is the rescue taking so long?这里rescue是持续终结性动词,如果表示习惯意义可以进行时加持续时间比如I am running these days。可是这里表示的是事件意义我认为应该是why have the rescue been taking so long?

我的理解1： Six men have been trapped in a mine for seventeen hours.这里trap是短暂终结性动词,这里的用法是不是跟he has gone用法一致。这里表示的是掉入后的状态的持续时间