GWD6-Q17， 求教

ShirleyWong

Concerns about publichealth led to the construction between 1876 and 1904 of three separate sewersystems to serve metropolitan Boston

A.   Concernsabout public health led to the construction between 1876 and 1904 of threeseparate sewer systems to serveB.   Concernsabout public health have led to the construction of three separate sewersystems between 1876 and 1904 to serve
C.   Concernsabout public health have led between 1876 and 1904 to the construction of threeseparate sewer systems for serving
D.   Therewere concerns about public health leading to the construction between 1876 and1904 of three separate sewer systems serving
E.    Therewere concerns leading between 1876 and 1904 to the construction of threeseparate sewer systems for serving


为什么B选项的现在完成时不可以？

vernetta

B选项的主要问题是between 1876 and 1904的位置问题，放在如题B选项中的位置，就可以理解成时间状语，就可以修饰led to和to serve，可原句的意思是修饰construction的。

再者，分析一下时态，这个construction是过去的，而concerns更是过去的，这句话只不过在陈述过去发生并且在过去就完成的事情（没有持续到现在），用现在完成时不对，并且原句也没有想表达这件事对现在的影响，不能用现在完成时态。

ShirleyWong

明白了， 谢谢 ^_^