求助各位牛人，一道GWD!!!

zxppx

Most of Portugal’s 250,000 university students boycotted classes in a one-day strike to protest a law that requires them to contribute $330 a year toward the cost of higher education, previously paying $7 per year.
A.    year toward the cost of higher education, previously paying $7 per year
B.    year toward the cost of higher education, for which was previously paid $7 per year
C.    year, compared to the previously $7 per year, toward the cost of higher education（previously不应该修饰$7）
D.    year toward the cost of higher education, instead of the $7 per year required previously
E.    year as opposed to the $7 per year required previously for the cost of higher education
请问A和B为什么了错了。答案是D。我觉得B中which指代的是higher education，在定语从句中做主语，只不过是被动形式。

lcy0403

year toward the cost of higher education, for which was previously paid $7 per year

7$ was paid per year for the cost of higher education

7$难道不是主语么？

baixuefei0524

楼上说得很对，做语法不要管如何把错的改对了，这样会耗费大量时间。知道哪里错了就好

stlibai

那如果去掉FOR， B就没问题了吧

-- by 会员 zxppx (2012/9/11 17:10:47)

去掉for也不行的,因为已经有更合理的选项了.

DUKB24

yeap

i think it will be fine

stlibai

我分析的没那么清楚,但是介词+名词这种介词短语结构里的名词是糟糕的先行词,所以可以用来选优

zxppx

那如果去掉FOR， B就没问题了吧

zxppx

baixuefei0524

介宾，介词+宾语。
for 是介词 后面的必然是宾语。
for which这里是 for higher education,还原后是was previously paid $7 per year for higher education，没有主语

zxppx

B中的主语不是higher education吗？我是这样理解的higher education was previously paid for $7 per year。