og 233 while的用法

weichenli

not NN..I agree with you partly...

1. ..have reduced...have raised...is a better parallel structure here.

2. I feel that if you add "and"

--> ..have reduced sickness, sleeping on the job, and fatigue among shift workers, and have raised...

somehow redundant! It would be better to insert "they" in the last structure to make this sentence clear.

--> have reduced sickness, sleeping on the job, and fatigue among shift workers, and THEY have raised production efficiently in various industries.

but the sentence is still redeundant!

Moreover, here "reduced" and "raised" pose contrasting meaning, "while" is prefer to "and" to express this sense.

hope this helps!

By the way, I have another question!

I thought "and" linking a parallel structure sometimes can be omitted if the two that "and" is linking together express same importance in the sentence...therefore the OG explanation about DE saying DE fail to use "and" to introduce the last item in the list, which is sleeping in these constructions..is contradicted to another OG's question (sorry can't find exact number now)

--a separate, required course

open to discussion....thanks~

weichenli

up up~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

weichenli

以下是引用momoyu在2005-9-24 9:48:00的发言：

i chose A for this reason to keep the parallrism between have reduced .. have raised...

is it because "and" before the last item in a serious of comparison is a must, and this rule always prevails?

Or because "while raising" express the comparison exactly? If yes, how can I notice this within limited time? tricky

i guess "and" in a serious of comparison does prevails! and now i guess especially when it is in a complex sentences serious.

finally got it!! that's where i got stuck

"..a required, separate course"....可以不用and 当两个一样重要时, 但是这里有3个平行啊!

大撤大雾

对于 BRISSA 提出的

Both D and E fail to use and to
introduce the last item in the list, which is sleeping in these constructions. 晕了，这句话读不懂

首先which is sleeping in these constructions是指last item吧。但sleeping 是列举中的第二项，fatigue才是last item啊？

因为D 接了lowered 动词, ...使句字变成 have reduce, lowered, and raised 在座平行了

所以sleeping on the job 就变成了第一个平行的last item

E 也是同理, and fatique among shift workers was lowered while raising production efficiency in varous industries 成了独立主格, 所以 sleeping on the job 在此也是last item 喽!!

E接着用 and fatigue