关于twice的用法

wweiradio

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GWD TN 9-14 or GWD-12-14

In 1914 a total of 469,000 cars and trucks were produced in the United States, but in 1929 almost twice the numbers of tucks alone came off the assembly lines.
A.    the numbers of trucks alone
B.     that number of trucks alone
C.     the number of trucks by themselves
D.     as many trucks themselves
E.     as many trucks by themselves

答案是B
1) 我们说 a number of trucks, 可是不说 a numbers of trucks.
这里 the numbers of trucks alone 是不对的, 而that number of trucks 是对的.

2) alone比by themselves好~？ 请解释一下
句子的上下文是强调单单是卡车就有那么多了, 并不是强调卡车它们自己怎么怎么样. 所以不用themselves.
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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    

答案是C。three times that?

不是 three times that. 而是 three times the price . that 是用来限定the price的.

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GWD-27-Q7

Providing initial evidence that airport are a larger source of pollution than they were once believed to be, environmentalists in Chicago report that the total amount of pollutant emitted annually by vehicles at O’Hare International Airport is twice as much as that which is being emitted annually by all motor vehicles in the Chicago metropolitan area.
   1. as much as that which is being emitted annually by all
   2. as much annually as is emitted by the
   3. as much compared to what is annually emitted by all
   4. that emitted annually by all
   5. that emitted annually compared to the

答案 4.

考的是倍数表达式

倍数+形容词. xx times taller than something or xx times as tall as something

倍数+名词 xx times  something(the/my 名词)

结果都是something, 它可以有从句来限制/修饰(that... ), 但不能是一个句子, 除非是what 引出的(what 就是那个something)

回到此题.

the amount ... is twice something.

1. that which 不好. "that that" is better, 可是仍旧不够好.

2. 没有something

3. as 不配对.

4. that emitted annually by all. something 是that,   that (that) emitted annually by all.

5. compared to 是多余的,twice 已经在表示比较了.

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In the 1980’s the rate of increase of the minority population of the United States was nearly twice as fast as the 1970’s.
(A) twice as fast as
(B) twice as fast as it was in
(C) twice what it was in
(D) two times faster than that of
(E) two times greater than

相同的分析.
the rate was twice something.
(B)something 不能是 it was in .... 它是一个句子. 可以改为: twice as fast as the rate that was in the 1970's. 不够简洁, 所以有了 what 引出的句子. what it was in 1970's.
(C) something 是 what

这样解释可以么?

wweiradio

wweiradio是神，本来一头包，被你一解释全明白了。21世纪你最贵

-- by 会员 zhoumingyuan (2010/7/1 3:39:19)

今天偶然回来看了一下,发现你的回帖,真是感慨万千. 我的神呀,考完了之后,我自己写的是傻我都看不懂了.不管对还是错,个人自己判断吧.
不过我考了快一年了吧..