GMAT语法考试模拟试题训练7

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A new hair-growing drug is being sold for three times the price, per milligram, as the drug's maker charges for another product with the same active ingredient.

A.as

B.than

C.that

D.of what

E.at which

正确答案：C

GMAT语法题目解析

题目释义：A new drug is being sold for three times the price___the drug's maker charges…

考点

句子结构(grammatical construction) 逻辑意思(logical prediction) 习惯用语(idiom)

times做比较时的用法1)X times+as+adij./adv.+as

2)X times+the+n.

3)X times more than

charger a price for sth

选项分析

A. times+the+n.+as是错误用法，应该是times+as+adij./adv.+as，as不能只有成单出现。

B. times+the+n.+than是错误用法;than必须要与比较级搭配。

C. correct。That指代price引导定语从句，因为这里", per milligram，"是个插入语。

D. the drug's maker所要charges的东西就是price，所以what就是price，那么price of what就成了price of price，逻辑错误。

E. price是charge的直接对象(charge a price)，所以不需要再加介词，直接that即可;charge at a price是错的，sell sth. at a price倒是可以的。

补充说明

一、倍数表达法

twice的用法：

twice as many…as; twice as much…as;

twice + n.(可以是代词，比如that); twice + what从句;

(twice只能用在数量上的双倍，例如 twice as much as , 但是不可以用在其它形容词或是副词的翻倍，例如twice as rapidly as是错的。)

The farm has more than twice as many cows as it has pigs.: 农场有多于猪两倍多的牛的数量。Twice是修饰as it has pigs的，所以把as many as分开看，应该是as many + as. 前面的as many是

用动词表达倍数：double/triple/quadruple/quintuple/sextuple ----》这些动词可以做形容词(double还能做adv, predeterminer)

sth. double sth.; sth. is doubled; sth. double(adj.);

几个永远错误的形式：

(1)produce double; a doubling of; produce a doubling

(2)as much as twice the apples(much与apples矛盾)(要改为twice as many apples as; sth. double sth.)

*：这几个动词可以用主动也可以用被动，但是不能和as搭配;(差不多记住这句话就可以)

…times(或数字) as + 形容词或副词+as;

sb. be + 百分数 + more likely (to do sth.) than to do sth.(前面的to do 能省，后面的不能省)如：at least fifty percent less likely than those who are sedentary to die of a heart attack

表达倍数用"… times + more +adj.+than，… time as +adj.+than"都正确

三类表示倍数的形容词为：twofold, threefold, fourfold, tenfold等。以twofold为例，其意思为two times as much or as many of something。该类词为形容词，多用于构成形容词+名词的词组，如：a threefold increase in revenue，少用于比较两个事物之间的倍数关系。

二、章振邦语法中介绍的倍数表达法：

i. x times(twice) + the + n. (twice还能做determiner)

ii. x times adj. (比较形式) than

iii. x times as adj. as 注意里面的adj.要和前面的名词匹配

A do x times as adj. … x as B do

iv. x times + what 分句 (名词性从句相当于名词)

v. x-fold

vi. double, triple, quadruple, quintuple, sextuple

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