由og140 引申出的问题？！

ford424

140. Declining values for farm equipment and land, the collateral against which farmers borrow to get through the harvest season, is going to force many lenders to tighten or deny credit this spring.
(A) the collateral against which farmers borrow to get through the harvest season, is
(B) which farmers use as collateral to borrow against to get through the harvest season, is
(C) the collateral which is borrowed against by farmers to get through the harvest season, is
(D) which farmers use as collateral to borrow against to get through the harvest season, are
(E) the collateral against which farmers borrow to get through the harvest season, are

答案选e，没什么疑惑。但是由此想到一个问题，如果一句话的结构是A,B,is... 其中b是a的同位语，而且a和b都是可数名词单数，那这样会不会产生起义，就是is不知道修饰谁？！

请教nn！谢谢！

ford424

怎么会有乱码？！

再问一次，如果 A,B,is... 中a和b都是单数可数名词，会不会产生is的修饰不明？

colacat

不会，因为B被逗号给前后断开了，很明显就是同位语。--单从结构上来说

juliechiu

my understanding:

Declining is the adj to values.Its meaning is like recessionary. And "values" is the subject. So the verb has to be "are".

gonghao

同位结构，主语以逻辑主语为准