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标题: 自己总结了特别纠结的while的用法 [打印本页]

作者: lizzykin 时间: 2015-6-8 11:23
标题: 自己总结了特别纠结的while的用法
While的用法
1、意为“当...时”放句首或句中
Prep:
While studying the genetic makeup of corn, Barbara McClintock discovered a new class of mutant genes, a discovery that led to greater understanding of cell differentiation.
这里while引导状语从句省略主谓，说明while可以表示在....时

2、意为“虽然、尽管”让步时，多放在句首。(=although)
OG正确句子：
While all states face similar industrial waste problems, the predominant industries and the regulatory environment of each state obviously determine the types and amounts of waste produced, as well as the cost of disposal.
OG的解释：
The sentence begins with the conjunction while, here used to mean although, and contrasts the similar situation of all states with the varying conditions of each state.
说明GMAT认为while可以在句首表示让步和转折，同样具有对比的意味，对比了所有州相似的情况和每个州不同的情形。
OG正确句子：
While the cost of running nuclear plants is about the same as for other types of power plants, the fixed costs that stem from building nuclear plants make the electricity they generate more expensive.
OG解释：This answer choice clearly and succinctly compares the two types of costs.
同样说明while可以在句首表示让步和转折，语意上有对比

3、在句中表示对比（contrast），这时要注意应该有同时发生的意思，如果并没有同时发生的含义则不用while
OG：
Dressed as a man and using the name Robert Shurtleff, Deborah Sampson, the first woman to draw a soldier’s pension, joined the Continental Army in 1782 at the age of 22, was injured three times, and was discharged in 1783 because she had become too ill to serve.
(A) 22, was injured three times, and was discharged in 1783 because she had become
错误答案B:
(B) 22, was injured three times, while being discharged in 1783 because she had become
OG的解释:While being … indicates that Sampson was injured at the same time she was discharged from the Army.
说明GMAT认为while可在句中表示at the same time的意思，表示同时发生的两件事

OG：
Over 75 percent of the energy produced in France derives from nuclear power, while in
Germany it is just over 33 percent.
OG解释错误的原因：While is somewhat ambiguous, since it might indicate simultaneity rather than contrast
正确答案：whereas nuclear power accounts for just over 33 percent of the energy produced in Germany
说明GMAT认为while出现在句中的时候可能会产生歧义
RON对这道题不用while的解释：
If "while" comes before a complete sentence, then, ideally, it should imply BOTH simultaneity AND contrast.
While HOV (high-occupancy vehicle) lanes do serve the laudable purpose of encouraging carpooling, they also reduce the number of lanes available to solo drivers, increasing both congestion and air pollution.
If "while" comes before a modifier, it serves only to indicate simultaneity.
You shouldn't send text messages while driving.
我自己的理解：因为while表示对比应该有同时发生的意思，但是这句话明显应该想说的只是两个国家的对比，不存在同时发生的意思，所以不用while比较好

OG正确句子：
Recently implemented “shift-work equations” base on studies of the human sleep cycle have reduced sickness, sleeping on the job, and fatigue among shift workers while raising production efficiency in various industries.
OG对这个句子的解释：Implementing the equations has reduced sickness, sleeping on the job, and fatigue; at the same time, it has increased efficiency.在减少...的同时增加...
OG对正确选项的解读：the phrase while raising provides a clear contrast with have reduced.说明while在这里很好的对比了增加和减少（同时+对比)

Prep错误选项:
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.
Prep的解释：
即便表示转折对比，while也有”at the same time“的含义在里面，与then矛盾
说明在句中，如果要表达转折但是没有同时发生的意思时，不能用while

作者: lizzykin 时间: 2015-6-8 11:24
第三点也是我自己摸索的...要是有什么不对的大家拼命指出！！一上午都在看while，看晕了....

作者: 无感骚年的逆袭 时间: 2015-7-15 10:11
谢谢啊～很棒！

作者: 田咯咯哒biu 时间: 2015-7-18 14:02
Mark一下！

作者: TYHx会好运 时间: 2015-7-18 19:39
感谢分享！

作者: babyangelasky 时间: 2015-7-20 14:43
Thx for sharing You lighten me up

作者: Hiiragihane 时间: 2015-7-22 21:17
一个疑问，Ron说while在modifier前只表示同时，那么SC134题C选项的while raising官方给出是provides a clear contrast with have reduced.如何解释？

作者: pheobe-J 时间: 2015-8-18 15:46
谢谢楼主，好详细

作者: Hailee 时间: 2015-9-4 15:01
看一下！

作者: VC1995 时间: 2015-12-6 22:51
mark.很棒的总结

作者: 玛德滞涨 时间: 2016-4-10 16:50
顶楼主！

作者: camix0624 时间: 2016-4-19 21:27
Mark一下！

作者: lanningxin 时间: 2016-4-29 15:57
顶楼主！

作者: 雨泓 时间: 2016-7-20 14:36
搜寻while的用法找到了这个，谢谢lz

作者: montgoberry 时间: 2016-9-3 15:42
1.If "while" comes before a complete sentence, it should imply simultaneity+contrast. 2.If "while" comes before a modifier, it serves only to indicate simultaneity. 楼主辛苦，但我觉得其实只有这两句话是核心。上面写了那么多，也是围绕着这两句话做的解释。

作者: tonygoodman 时间: 2016-11-5 11:03
牛逼！我是在做prep07遇到问题百度过来的。

作者: amy14365 时间: 2017-1-4 17:43

montgoberry 发表于 2016-9-3 15:42
1.If "while" comes before a complete sentence, it should imply simultaneity+contrast. 2.If "while" c ...

同意！

作者: amy14365 时间: 2017-1-4 17:44

感谢分享！

作者: 白夜未行tang 时间: 2017-1-5 21:58
感谢楼主，收益了

作者: 阿兔 时间: 2017-5-26 19:09
感谢分享！

作者: Niicole 时间: 2017-12-7 18:30
谢谢～

作者: Basquiat 时间: 2018-7-29 05:31
感谢分享！

作者: lw902 时间: 2018-8-22 19:34
顶楼主！

那可不可以用while前后的时态来排除呢？

目前来看，在while+complete sentence 里，有三种意思：同时或转折或让步1、在while表同时和转折时，主从句同时发生，时态一致（主将从现这个就不赘述了）。如果选项里while前后不同时则排除，就如楼主最后一个prep例子。（特别地，当遇到时态一致的转折时，如果选项里有whereas等转折意味更明显的词则更优，以避免while歧义，就如下面楼主提到的例子）

OG：
Over 75 percent of the energy produced in France derives from nuclear power, while in
Germany it is just over 33 percent.
OG解释错误的原因：While is somewhat ambiguous, since it might indicate simultaneity rather than contrast
正确答案：whereas nuclear power accounts for just over 33 percent of the energy produced in Germany

当然这个错误选项里的 it 也可以帮助排除

2、在while表让步时，主从句可以不同时，所以不适用排除。例 While Hans Holbein the Younger is most often identified with his English portraits, scholars have long recognized him as a superb draftsman and a remarkably versatile artist who was fundamental in synthesizing the novelties of the Italian Renaissance with the rational tradition of Northern Europe.

可以这样理解吗~求指教

作者: echodyx 时间: 2018-8-30 00:27
顶楼主！
有一个问题，while从句是不是不可以用现在完成时？

作者: joii 时间: 2018-9-5 20:21
顶楼主！

作者: 蟹黄味蚕豆 时间: 2018-9-5 22:57
感谢分享！

作者: gemmarong 时间: 2018-9-23 13:00
看一下！

作者: AMBER513 时间: 2019-8-20 22:00
感谢分享！

作者: woxiao_ 时间: 2019-9-16 12:01
顶楼主！

作者: Griya小扇 时间: 2019-10-4 12:48
好棒谢谢你我刚刚还在因为一道题纠结while的用法
刚好也贴上来分享给大家
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

CA:E

作者: Katherine_kk 时间: 2019-10-9 13:13
Mark一下！

作者: beatokc 时间: 2019-11-3 21:16
很有收获，感谢分享

作者: fayye 时间: 2019-11-7 23:00
感谢分享！

作者: Zelll 时间: 2020-2-13 12:22
Mark一下！

作者: 典座 时间: 2020-5-30 00:09
Mark一下！

作者: 巨鹿路417号 时间: 2020-6-12 00:22
感谢楼主！十分受益，！

作者: Thisis呱呱小 时间: 2020-6-18 21:22
谢谢你

作者: lanlande 时间: 2020-12-5 10:55
谢谢！

作者: 撇儿 时间: 2020-12-9 22:02
顶楼主！

作者: 雪姜姜 时间: 2021-6-26 16:59
感谢！！！

作者: iyTefuir 时间: 2022-2-11 22:32
感谢分享！

作者: 谁是谁的小宝贝 时间: 2022-2-14 00:28
感谢分享！

作者: Sophie_Lee 时间: 2022-6-7 14:15
整理的太好啦，感谢！！

作者: ellaaaaaa12.18 时间: 2022-6-17 12:17
感谢楼主很有共鸣

作者: Jackychri 时间: 2022-7-9 12:31
非常感谢

作者: 赤夙700 时间: 2022-9-25 11:50
感谢分享！

作者: ww学g 时间: 2022-11-5 14:12
谢谢分享！

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