题目

i have a question for you
Nearly a week passed before the girl was able to explain what had happened to her.One afternoon she set out from the coast in a small boat and was caught in a storm.Towards evening,the boat struck a rock and the girl jumped into the sea.Then she swam to the shore after spending the whole night in the water.During that time she covered a distance of eight miles.Early next morning,she saw a light ahead.She knew she was near the shore because the light was high up on the cliffs.On arriving at the shore,the girl struggled up the cliff towards the light she had seen.That was all she remembered.When she woke up a day later,she found herself in hospital.
On arriving at the shore,the girl struggled up the cliff towards the light she had seen.这里为什么用had seen.过去完成时呢.thank you.

提问时间：2020-08-07

答案

过去完成时用于描述发生在过去的过去的事情.
the girl struggled up用的是一般过去时
towards the light she had seen
因为她看到光发生在struggled up这个过去的动作之前,即发生在过去的过去,所以用过去完成时.
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