网上的砖家答得不对啊?
the young boy has come to himself in hospital now .but he _____unconscious for three days.
A、has been B、was C、had been
为什么选B不选A呢,
人气：330 ℃ 时间：2020-06-30 02:31:48
解答
B选项一般过去时指的是失去知觉了3天.而A选项是现在完成时间,表示的概念为过去发生的事对现在照成的结果或影响,或者是过去发生的事一直持续到现在.若选A则表示他还处于昏迷状态没有苏醒,这与前面的现在已经苏醒矛盾,故此选B.表达一个简单的过去的事实.
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