we didn'r expect them to ______-for us .we didn'r expect them to ______-for when we arrive there so late.A.to be waiting B.to have been waiting C.to have waied D.to wait.为什么不选B.我知道A对.那B 错在哪儿?
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we didn'r expect them to ______-for us .we didn'r expect them to ______-for when we arrive there so late.A.to be waiting B.to have been waiting C.to have waied D.to wait.为什么不选B.我知道A对.那B 错在哪儿?
we didn'r expect them to ______-for us .
we didn'r expect them to ______-for when we arrive there so late.
A.to be waiting B.to have been waiting
C.to have waied D.to wait.
为什么不选B.我知道A对.那B 错在哪儿?
we didn'r expect them to ______-for us .we didn'r expect them to ______-for when we arrive there so late.A.to be waiting B.to have been waiting C.to have waied D.to wait.为什么不选B.我知道A对.那B 错在哪儿?
如果选B,整句话的意思就会变成,他们在我们到之前已经完成等待这个动作了,而且我们是到了那里才知道这件事.也就是说,该句重点成了后半句,就是我们到了那里知道了他们曾经有等待我们这么一件事情了.
如果选A,就表示我们到的时候他们还是在等待,这样重点就成了他们等待我们这件事了.所以根据句意,选A比较合理.
另外,从语法上讲,have been waiting是一个进行时态,是持续性的动作,不能和后面的when搭配使用!