1.she—————— her hairstyle in her hometown before she came to chongqing for a better job.2.the train ____ when he got to the station.第一题为什么是过去式changed呢?第二题就是过去完成时had lleft呢?能解释一下为什

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1.she—————— her hairstyle in her hometown before she came to chongqing for a better job.2.the train ____ when he got to the station.第一题为什么是过去式changed呢?第二题就是过去完成时had lleft呢?能解释一下为什

1.she—————— her hairstyle in her hometown before she came to chongqing for a better job.2.the train ____ when he got to the station.第一题为什么是过去式changed呢?第二题就是过去完成时had lleft呢?能解释一下为什
1.she—————— her hairstyle in her hometown before she came to chongqing for a better job.
2.the train ____ when he got to the station.
第一题为什么是过去式changed呢?第二题就是过去完成时had lleft呢?
能解释一下为什么第一个就是过去时呢?

1.she—————— her hairstyle in her hometown before she came to chongqing for a better job.2.the train ____ when he got to the station.第一题为什么是过去式changed呢?第二题就是过去完成时had lleft呢?能解释一下为什
changed 因为她到重庆之前换了发型
如:We ate our breakfast before we go to school 我们吃了早餐才去上学
但是
2.the train ____ when he got to the station.
当他到火车站时,火车已经开走了,就是had left,重点在于"已经"
如:They had finished their meal.
She had eaten her lunch
They had caught the theif

两句话的强调点不同。第一句话强调动作——换了发型,第二句话强调时态——已经离开

这两题中的两空所涉及的动作都是“过去的过去”, 从语法上讲都要用过去完成时, 但第一个句子由于有了before, 可以用一般过去时代替过去完成时, 原因是,before 已经把时间的先后关系表述清楚了
语言点:
在句中有 after, before , as soon as 的时候, 由于这些连词已经把时间的先后关系表述清楚,可以用一般过去时代替过去完成时!...

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这两题中的两空所涉及的动作都是“过去的过去”, 从语法上讲都要用过去完成时, 但第一个句子由于有了before, 可以用一般过去时代替过去完成时, 原因是,before 已经把时间的先后关系表述清楚了
语言点:
在句中有 after, before , as soon as 的时候, 由于这些连词已经把时间的先后关系表述清楚,可以用一般过去时代替过去完成时!

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可以理解为:
第一句没有强调先后关系,只是说在家乡做了这件事,如果非要用过去完成时,那也没错。
第二句强调先后关系,说明没有赶上火车。
很高兴为你解答!
老师祝你学习进步!
望采纳,多谢你的问题!^_^

第一个表示的是过去的动作。改变发型。
第二个是完成时的用法,表示火车在他去之前就已经开走了。
希望对你有所帮助。

选A,过去完成时。其中时间点为:在去重庆之前,已经换了发型,因此是过去完成时 ,

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