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标题: 一个语法小疑问... [打印本页]

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作者: cold2100    时间: 2007-1-11 01:08
标题: 一个语法小疑问...
Concerns about public health led to the construction between 1876 and 1904 of three separate sewer systems to serve metropolitan Boston.

1. Concerns about public health led to the construction between 1876 and 1904 of three separate sewer systems to serve
           
2. Concerns about public health have led to the construction of three separate sewer systems between 1876 and 1904 to serve
           
3. Concerns about public health have led between 1876 and 1904 to the construction of three separate sewer systems for serving
           
4. There were concerns about public health leading to the construction between 1876 and 1904 of three separate sewer systems serving
           
5. There were concerns leading between 1876 and 1904 to the construction of three separate sewer systems for serving

 这道题讨论过答案A，不过我想弄明白between 1876 and 1904表示时间段，为什么不用完成时？

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作者: rio    时间: 2007-1-11 03:26

作题不能太死板

必须动词是对应在该时间段的才用完成时

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