又是一道比较形式的省略问题，大家来讨论呀！

captain_ma

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.

 

1. a greater proportion than it was
2. a greater proportion than
3. a greater proportion than they have been
4. which is greater than was so
5. which is greater than it has been

the correct answer is b,but why a is incorrect? just as it is wordy? please!

duoduoju

a greater proportion 是more than half the spending的同位替代，主句与从句的主语谓语均相同，所以可以全部省略，从句只剩下时间状语。

a选项中，it 不能指代复数主语costs,动词was也与主句的实义动词accounted不能对应(应用did对应)

captain_ma

感激涕零！

lucccky328

我认为是：a greater proportion in the presidential campaign of 1992 than in any previous election.