天山 4-20

scorpio0001

A的错误在于while是连词，应该连接句子。而A选项while后面接的是n.。所以错误。

laoyv

Another mistake in A, "Causing Pollution" is awkward, one verb can well express the meaning.

IDAISY

好像gwd里也有此题,当时选了c

刚才做到这题,选了a

再看一遍,还是'应该选c

怎么办哪,马上考试了,语法还是没有清晰的感觉

yukon

希望大家继续讨论，楼上我不记得GWD有这个题啊？

我当时没选C是因为觉得有run-on问题。而且while的确有不跟句子的时候，do sth while doing sth几乎是GMAT中的固定搭配了。如果说我对A还有什么戒心的话，那就是：while前面最好不加comma.

再次希望大家继续讨论

yukon

举个 do sth while doing sth的例子：

大全95      Although some officials noted that using machines for farming in China costs more than traditional hand cultivation, the mechanization of farming in the village of Long Bow doubled the corn yield while the previous year’s costs were cut in half.

(A) mechanization of farming in the village of Long Bow doubled the corn yield while the previous year’s costs were cut in half

(B) mechanization of farming in the village of Long Bow doubled the corn yield while cutting costs to half those of the previous year

(C) mechanization of farming in the village of Long Bow doubled the corn yield as cost were cut to half of the previous year’s

(D) farming mechanization in the village of Long Bow doubled the corn yield as it cut in half the previous year’s costs（B）

(E) farming mechanization in the village of Long Bow doubled the corn yield while costs were cut to half that of the previous year

yukon

举个do sth while doing sth的例子

大全95        Although some officials noted that using machines for farming in China costs more than traditional hand cultivation, the mechanization of farming in the village of Long Bow doubled the corn yield while the previous year’s costs were cut in half.

(A) mechanization of farming in the village of Long Bow doubled the corn yield while the previous year’s costs were cut in half

(B) mechanization of farming in the village of Long Bow doubled the corn yield while cutting costs to half those of the previous year

(C) mechanization of farming in the village of Long Bow doubled the corn yield as cost were cut to half of the previous year’s

(D) farming mechanization in the village of Long Bow doubled the corn yield as it cut in half the previous year’s costs（B）

(E) farming mechanization in the village of Long Bow doubled the corn yield while costs were cut to half that of the previous year

yukon

以下是引用westlakegz在2005-1-8 6:05:00的发言：


记得在OG上看过，如果是两个独立的句子并列，在and前要用逗号搁开

版主的意思是不是说：SVO, and SVO这种形式是对的

那我就顺下来总结一下comma的用法吧，我记得这几种情况是对的：

SVO and VO

SV who VO, and who VO

SVO, VO, and VO

好像这个情况是错的：

SVO, and VO

NN们看看吧，有错误的话帮我纠正一下，谢谢了！

illgetthere

以下是引用yukon在2005-7-3 16:06:00的发言：

举个 do sth while doing sth的例子：

大全95      Although some officials noted that using machines for farming in China costs more than traditional hand cultivation, the mechanization of farming in the village of Long Bow doubled the corn yield while the previous year’s costs were cut in half.

(A) mechanization of farming in the village of Long Bow doubled the corn yield while the previous year’s costs were cut in half

(B) mechanization of farming in the village of Long Bow doubled the corn yield while cutting costs to half those of the previous year

(C) mechanization of farming in the village of Long Bow doubled the corn yield as cost were cut to half of the previous year’s

(D) farming mechanization in the village of Long Bow doubled the corn yield as it cut in half the previous year’s costs（B）

(E) farming mechanization in the village of Long Bow doubled the corn yield while costs were cut to half that of the previous year

请注意本题中while引导成分的逻辑主语

chrislee0709

這題的關鍵在於leak這個詞，

其實a.的while causing 沒有錯，只是比較wordy，也不存在雙主詞的什麼結構，

單純連接兩個句子，但是重點還是在leak 慣用 intransive 只有c才對。

2{longman}
[intransitive always + adverb/preposition]if a gas or liquid leaks somewhere, it gets through a hole in something
ￚsynonym seep
leak into/from/out
Sea water was leaking into the batteries which powered the electric motors.

titatita

while doing在og中的例子

233. Recently implemented "shift-work equations" based on studies of the human sleep cycle have reduced sickness, sleeping on the job, fatigue among shift workers, and have raised production efficiency in various industries.

(A)  fatigue among shift workers, and have raised

(B)  fatigue among shift workers, and raised

(C)  and fatigue among shift workers while raising

(D)  lowered fatigue among shift workers, and raised

(E)   and fatigue among shift workers was lowered while raising

The best answer, C, grammatically states that the equations... have reduced x, y, and i. and have raised efficiency. Choices A and B fail to use and to signal that fatigue among shift workers completes the series begun by have reduced, and so produce awkward and unclear sentences. Both D and E fail to use and to introduce the last item in the list, which is sleeping in these constructions. In E, while raising has no logical referent, producing only the absurd statement that fatigue has raised efficiency.

所以不能把while doing作为错误点

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