作业帮before long, long before
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/13 03:39:32
He said in his letter that he was going to visit China __ and that he had the idea __ . a.long before,before long b. before long,long before, c.before long, soon d.before long,before long
解题思路： 如下
解题过程：
选b。
句意是：他在信中说他不久以后要去访问中国而且他很久以前就有这个想法。
long before一般用作副词短语，意为“很久以前”多用于过去时态，如：
The story had happened long before.故事发生在很久以前。
I had been there long before. 我很久以前就去过那里。
有时long before可分开理解，before作介词或连词，后接短语或句子。
I had waited there long before he arrived. 他来之前，我在那已等了很久。
before long是介词短语，在句中作时间状语，意为“不久之后，立刻”，常用于将来时态，如：
I hope we'll meet again before long.我希望不久我们再见面。
The bus is arriving before long. 汽车马上就到了。
最终答案：略
解题过程：
选b。
句意是：他在信中说他不久以后要去访问中国而且他很久以前就有这个想法。
long before一般用作副词短语，意为“很久以前”多用于过去时态，如：
The story had happened long before.故事发生在很久以前。
I had been there long before. 我很久以前就去过那里。
有时long before可分开理解，before作介词或连词，后接短语或句子。
I had waited there long before he arrived. 他来之前，我在那已等了很久。
before long是介词短语，在句中作时间状语，意为“不久之后，立刻”，常用于将来时态，如：
I hope we'll meet again before long.我希望不久我们再见面。
The bus is arriving before long. 汽车马上就到了。
最终答案：略
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