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标题: 求助GWD6-7关于完成时 [打印本页]

作者: Tiffany1003 时间: 2006-11-17 03:50
标题: 求助GWD6-7关于完成时

Concerns about public health led to the construction between 1876 and 1904 of three separate sewer systems to serve metropolitan Boston.

Concerns about public health led to the construction between 1876 and 1904 of three separate sewer systems to serve
Concerns about public health have led to the construction of three separate sewer systems between 1876 and 1904 to serve
Concerns about public health have led between 1876 and 1904 to the construction of three separate sewer systems for serving
There were concerns about public health leading to the construction between 1876 and 1904 of three separate sewer systems serving
There were concerns leading between 1876 and 1904 to the construction of three separate sewer systems for serving between不是表示一个时间段，为什么不选C用完成时呢？

作者: jinyiming 时间: 2006-11-17 06:25
between 1876 and 1904的位置不对，意思有变。

作者: daniel_lew 时间: 2007-10-30 22:15

为什么要用完成式呢？

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