关于and，but前有逗号到底要不要补充主语？纠结纠结~~请教请教~~~

ruimiss

prep223
After several years of rapid growth, the health 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
答案选E，不是不理解。
我的问题是，不是有条定律是两个句子并列，but或and前若有逗号隔开，第二句的并列或者转折要加上自己的主语，即便是和第一句重复的主语，做到好几道都是这样的情况。
但有时又碰到不要加主语的，比如上面这道，那到底什么时候要补充主语什么时候不要呢？？？
我混乱了。请NN帮忙解答。

不胜感激，撒花撒花~~~~~~

ruimiss

为什么没有人回答？？？？？呼叫呼叫~~~~~~~~~~~~顶~~~~~

crystalhuang

我觉得不是,语法主要考:句意(意思表达正确无歧义)
其次排除罗嗦的
这题关键不是it
ABC:its一定不能要,falling的逻辑主语是 health care company,最后一句不是做结果状语从句
D中用proving则but连接的后句就没了谓语动词
这些都是绝对性错误
E与他们比来,没有it是可以的,有时必须加it 是为了避免歧义
建议你认认真真看看OG的解释,可以知道大概的考点
没有你说的那种规则定理(个人建议,呵呵)

ruimiss

原来是这样~~~~~~~~~~~~~~3QQQQQQQQQQQQQQ~~~~~其实OG看了好多遍。。。。哎。。。

benjalex

可能是两句不对等才要补充主语，如前句是动词做谓语，后句用be动词，后句就补充主语

benjalex

我觉的A，B主要是while 和then 一起用不恰当

oranrona

我也想问啊!and前到底什么时候要加逗号，什么时候不用呢？
是连接两个句子必须加嘛？那两个动词之间是不能加嘛？
看了好多老帖都没看明白！求赐教，我太蠢了~~~~~~~~~~~

kking

恩？我怎么觉得我看不懂最后一个分句。。its怎么错了？能不能再解释下。。

liptontea

but then 在这里表示“不过”的意思，有让步的态度。虽然经过数年的快速发展已成为最大的医疗保健公司，不过其显示出不能够处理增长的业务。

而while则表示“但是”，不符合原文的逻辑意思。

but作为连词连接二个句子须平行对称。句子主语相同时，but后面的主语可以省略。

yougushizi

说说我的理解哈：
but做连词连接句子，貌似如果所连接后面句子和前面句子的主语完全一致，而且省略后不会发生歧义，就可以省略主语？
不省也对，省了更加简洁吧？

prep223
After several years of rapid growth, the health 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
答案选E，不是不理解。
我的问题是，不是有条定律是两个句子并列，but或and前若有逗号隔开，第二句的并列或者转折要加上自己的主语，即便是和第一句重复的主语，做到好几道都是这样的情况。
但有时又碰到不要加主语的，比如上面这道，那到底什么时候要补充主语什么时候不要呢？？？
我混乱了。请NN帮忙解答。

不胜感激，撒花撒花~~~~~~

-- by 会员 ruimiss (2010/4/23 12:28:28)