[求助]一道语法题

weiyihantime

For protection from the summer sun, the Mojave lived in open-sided, flat-topped dwellings known as shades, each a roof of poles and arrowweed supported by posts set in a rectangle.

 

1. each a roof of poles and arrowweed
2. each a roof of poles and arrowweed that are being
3. with each being a roof of poles and arrowweed
4. with roofs of poles and arrowweed to be
5. with roofs of poles and arrowweed that are

   Answer: EA

请问为什么选A而不选E呢？

jy03161061

with结尾的话,那么要求逻辑主语是句子主语, 而这里后面修饰的明显是flat-topped dwellings known as shades

CCAML

只能有一个roof, 因为一个rectangle不能support 多个roof(roofs).

pangniu

以下是引用jy03161061在2009/9/14 1:19:00的发言：
with结尾的话,那么要求逻辑主语是句子主语, 而这里后面修饰的明显是flat-topped dwellings known as shades

很好的解释。在最近语法经常考独立主格的时候回过来看这道题可以又明白一些。这是关于独立主格和with的一个典型考法。

weiyihantime

谢谢哈：）