新prep2-197

dontwannalos

197.



Soaring television costs accounted for more than half the spending in the presidential campaign of 1992, a greater proportion than it was in any previous election.

A. a greater proportion than it was

B. a greater proportion than

C. a greater proportion than they have been

D. which is greater than was so

E. which is greater than it has been

答案是B，A为什么不对，是因为省略吗？D和E是因为which不能只带整个句子吗？请帮忙解释一下，谢谢。

zhengxing

A两个问题。

1、parrallelsim 不对。than结构前后一致，前面没主谓，后面不要乱加。
2、it指代对象不对，it 要带着修饰词指代。这里指 a greater portion

D,E which修饰不对，so乱用，时态不对等等。

dontwannalos

说的太好啦！！！谢谢 一下子就明白了 而且能够举一反三！

sunniers

谁能说说C中的“have been"为什么错误吗？谢谢