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标题: Prep08 175(GWD-9-Q3) [打印本页]

作者: 味若清欢 时间: 2016-4-14 09:55
标题: Prep08 175(GWD-9-Q3)
175. (GWD-9-Q3)

Because of wireless service costs plummeting inthe last year, and as mobile phones are increasingly common, many people now using their mobile phones to make callsacross a wide region at night and on weekends, when numerous wireless companiesprovide unlimited airtime for a relatively small monthly fee.

A. Because of wireless service costs plummeting in the last year, and asmobile phones are increasingly common, many people

B. As the cost of wireless service plummeted in the last year and as mobilephones became increasingly common, many people

C. In the last year, with the cost of wireless service plummeting, andmobile phones have become increasingly common, there are many people

D. With the cost of wireless service plummeting inthe last year and mobile phones becoming increasingly common, many peopleare (D)

E. While the cost of wireless service has plummeted in the last year andmobile phones are increasingly common, many people are

选项分析: (A) and前后的分句结构都不完整；because of和as不平行对称；because of后面核心词只有costs，无法表达出完整含义，awkward。
(B) 缺少主谓成分，句子结构不完整；in the last year通常与现在完成时搭配；未划线部分的provide用的是一般现在时，则as mobile phones became increasingly common中，became应该用一般现在时；两个as引导的原因状语从句并列
(C) and前后成分不平行；and后面句子run-on的错误；此处there be句型不及主谓结构更有效，wordy；in the last year提前，从仅修饰the cost of wireless service plummeted变为修饰整句话，造成逻辑错误
(D) Correct；with可以表示原因，与as含义相似(见补充说明)；注意become和increasingly并不重复，increasingly只是表达了more and more的含义，become与more常搭配使用
(E) while引导的从句要与主句发生在同一时间，可是wireless service has plummeted与主句不是同一时间发生的，用while错误，而且用as表示原因或伴随更为合适

以上是Prep08的分析。
我有个疑问：D中没有用完成时而是用了进行时，为什么对？哪位大神能给我讲讲？

作者: emmahiggins09 时间: 2016-4-14 21:12
People are NOW using...，主句里没有完成时态的time maker 而且后面when 引导的从句用的是一般现在时，个人感觉没有必要使用现在完成时，而且其他的选项里也没有现在完成时的选择

作者: 医生吃鱼 时间: 2016-4-15 09:09
完成时和现在时在sc中的区分不明显，不能作为绝对的排除点。

另外，非划线部分已经写着now using，那就只能搭配谓语are了。

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