关于GWD-23-Q23 请教大NN们两个问题~~

郭happy

GWD-23-Q23

After several years of rapid growth, the healthy care company became one of the largest health care providers in the metropolitan area, while it then proved unable to handle the increase in business, falling months behind in its payment to doctors and hospitals.

A.      while it then proved unable to handle the increase in business, falling months behind in its payment to

B.       while it then proved unable to handle the increase in business and fell months behind in its payment to

C.      but then it proved unable to handle the increase in business, falling months behind in its paying

D.      but then proving unable to handle the increase in business, falling months behind in paying

E.       but then proved unable to handle the increase in business, falling months behind in paying

正确选项是E

想请教一下：
1. but 后面为什么可以省略掉主语呢，连词后面句子省略主语的条件是什么？
2. 自己语法基础不好，正在研究从句，句首After several years of rapid growth是状语从句吗？
   不是说从句都要有主谓（宾）、主系表的完整结构吗？这个状语从句怎么不完整呢，还是它省略了主语什么的？

板栗在奋斗

呃= =第一个就是动词的并列连接而已。第二个的话= =就是状语而已啦。

郭happy

板栗在奋斗 发表于 2013-8-11 18:25
呃= =第一个就是动词的并列连接而已。第二个的话= =就是状语而已啦。

but前面还有个逗号呢 后面的不应该是一个句吗~

板栗在奋斗

郭happy 发表于 2013-8-11 20:19
but前面还有个逗号呢 后面的不应该是一个句吗~

嗯，我没注意呢，抱歉~那也许是主语一样，所以省略了吧。

Joehe2010

but后面不用跟完整的句子
同样Although
背下来吧

qiongle

but后面如果表转折的话是必须要加完整句子的，manhattan里面有提到过的，这里他是省略了前面的 the healthy care company，同样的成分省略是没问题的。but在表并列的时候是不需要完整句子结构的（not noly but also）。

郭happy

qiongle 发表于 2013-8-14 17:12
but后面如果表转折的话是必须要加完整句子的，manhattan里面有提到过的，这里他是省略了前面的 the healthy ...

谢谢~记下了

阳蛋普

hello，傻鸟~

郭happy

阳蛋普 发表于 2013-8-26 16:15
hello，傻鸟~

你去一边儿去

阳蛋普

郭happy 发表于 2013-8-26 16:16
你去一边儿去

一会陪我理发！