一道og18 中 关于 as 和 while 的题

CLAREni

Gusty westerly winds will continue to usher in a seasonably cool air mass into the region, as a broad area of high pressure will build and bring fair and dry weather for several days.

• Ato usher in a seasonably cool air mass into the region ,as a broad area of high pressure will build and
• Bushering in a seasonably cool air mass into the region and a broad area of high pressure will build that
• Cto usher in a seasonably cool air mass to the region , a broad area of high pressure will building and
• Dushering a seasonably cool air mass in the region ,with a broad area of high pressure building and
• Eto usher a seasonably cool air mass into the region ,while a broad area of high pressure builds , which will
  

正确答案: E
为什么a 不对呢？ 是因为as 有多种意思句子会产生歧义吗？如果as 引导时间状语从句和while 在gmat 中有什么区别呢

Jackson张

A中的usher in a ....这里in应该是多余了， 正确的结构感觉应该是 usher sth into the region 而不是usher in sth into the region

CLAREni

up

子升

看一下！               

yuskisw

OG中的解释是对的。因为ush Cool air 和 High pressure build up是造成 干燥天气的原因，所以前两者应该并列，用which表示结果。A用And的话， 三者都是并列关系，看不出来干燥天气是结果

yuskisw

个人认为as和while在这里区别不大，但原文出处用while一定是更精确那么一点点。那么GMAT为了考你抓重点，就把while换了个as迷惑你。

G不上7不改名

lz，这里while除了表示两个同时发生还有个对比的意思。
前面是冷气流，后面是暖

paddy114

G不上7不改名 发表于 2017-11-11 15:22
lz，这里while除了表示两个同时发生还有个对比的意思。
前面是冷气流，后面是暖 ...

请教一下冷暖的比较是怎么得出的呢？我怎么觉得usher和后面build的宾语都是"a seasonably cool air mass"呢，意思是这个mass是broad area of high pressure建立的，由gusty westerly winds来引入该区域。

G不上7不改名

paddy114 发表于 2017-11-12 10:53
请教一下冷暖的比较是怎么得出的呢？我怎么觉得usher和后面build的宾语都是"a seasonably cool air mass" ...

可是hight pressure和G引起的是两个不一样的东西啊，我觉得你可能不要翻译，直接按英语的逻辑理解会好一点

杀G曼巴

Gusty westerly winds will continue to usher in a seasonably cool air mass into the region, as a broad area of high pressure will build and bring fair and dry weather for several days. A. to usher in a seasonably cool air mass into the region ,as a broad area of high pressure will build and B. ushering in a seasonably cool air mass into the region and a broad area of high pressure will build that C. to usher in a seasonably cool air mass to the region , a broad area of high pressure will building and D. ushering a seasonably cool air mass in the region ,with a broad area of high pressure building and E. to usher a seasonably cool air mass into the region ,while a broad area of high pressure builds , which will

我尝试着解读一下：1） 理解主干及逻辑
当高压形成时（Event1），G风将会继续把冷空气引入某地区（Event2），（而这一变化）会带来数日的干燥天气（Event3）
Event1 和 Event2 关系： simultaneous
Event2 和 Event3 关系： causal link


2）读选项
Split1 ：词的用法 ： Usher/ Usher in  
   A usher B in.  （表示A把B引进去，目的会比较泛）
   A usher B into X. （表A把B引到X，目的具体）
但是 A usher in B in/into X，这里Redundancy了 ，eliminate ABC


Split2 ： D/E PK
continue to do / doing  后者更口语，前者更书面，当然这个差别很小，说服力不够，但先提出来；
D主要有2个问题：
（1（1）根据之前我分析的Event2 和3的逻辑，这是一个因果逻辑，但是D用and把因果逻辑割裂了
     （2）而且用了 and 前后也不平行

Split3： 当然这时候已经可以很轻松确定E了，但其实还有一个问题
       A/ E 对比：
       A. Gusty westerly winds will continue to usherin a seasonably cool air mass into the region, as a broad area of high pressure will build and bring fair and dry weather for several days.

      E. Gusty westerly winds willcontinue to usher a seasonably cool air mass into the region while a broad area of high pressure builds, which will bring fair and dry weather for several days.

  很容易可以看出时态应该用现在时

关于which这里为什么可以这么用？

这里which 不是修饰前面整句话，而是修饰“a broad area of high pressure”

因为如果不会产生歧义的情况下，且which能合理修饰到前面antecedent的情况下，中间是可以加入类似表“come into being, arrival, positioning" 的动词

e.g.  A new CEO is coming who will change the way our company does business