疑问是：OG199中，100times +the n 说是表次数。在prep1-66中，却表倍数

到底怎么回事啊？

199. Because the Earth's crust is more solid there and thus better able to transmit shock waves, an earthquake of a given magnitude typically devastates an area 100 times greater in the eastern United States than it does in the West.

(A)
     of a given magnitude typically devastates an area 100 times greater in the eastern United States than it does in the West

(B)
     of a given magnitude will typically devastate 100 times the area if it occurs in the eastern United States instead of the West

(C)
     will typically devastate 100 times the area in the eastern United States than one of comparable magnitude occurring in the West

(D)
      in the eastern United States will typically devastate an area 100 times greater than will a quake of comparable magnitude occurring in the West

(E)  that occurs in the eastern United States will typically devastate 100 times more area than if it occurred with comparable magnitude in the West

199B: 此处的核心问题就是它用作主句动词的宾语, 而且在这里用an area比the area(特指)更合适.

倍数表达法:

1) twice/three times the number/the figure/the length

2) twice/three times + 形容词比较级 + than …

3) twice/three times + as + adj. + as …

4) twice/three times + what分句: … 42 times what it was in 1950.

5) -fold(adj.)表达法: increase threefold; a threefold increase

6) double(v.), triple(v.), quintuple(v., 5倍), again(adv.)表达法: sth costs as much again as …

7) as … as twice + that 分句. DQ-250-107

At issue is the accurate expression of a complex comparison. Choice D, the best answer, presents the proper form of comparison, will typically devastate an area 100 times greater than will; thus, choice D logically indicates that earthquakes in the eastern United States are 100 times more devastating than are western earthquakes. Choices A, B, and E use it incorrectly to suggest that the same quake strikes both the eastern and the western United States. In choice C, 100 times the area... than is unidiomatic.

 Because the Earth's crust is more solid there and thus better able to transmit shock waves, an earthquake of a given magnitude will typically devastate 100 times the area if it occurs in the eastern United States instead of the West。

这里单纯语法上的错误就在于名词2后面跟了从句。建议改成名词2的修饰语。

 Because the Earth's crust is more solid there and thus better able to transmit shock waves, an earthquake of a given magnitude, if occurs in the Eastern US, will typically devastate an area 100 times the area devastated by an earthquake that occurs in the West.

第二题 P1-66，

语法现象：完全句子+ 伴随性比较。

这里后面的修饰成分是做伴随，一般两个情况

1.副词状语形式，修饰前面整个句子或者句子的核心成分谓语。

一般形式为：完全句子+ adv.伴随+ （主）谓。

2.形容词表语（定语）形式，修饰前面主句的主语。

一般形式为：完全句子+ adj.伴随+ 名词

这一题是倍数词，做表语，所以是第二种情况——完全句子+ 倍数词伴随+ 名词。

所以A选项还原

Africa's black rhino population in the mid-1970's numbered about 20,000, ten times the estimated population of 2,000 in 1997.

这种表语性伴随也可以改写如下：

Africa's black rhino population in the mid-1970's numbered about 20,000,  being ten times the estimated population of 2,000 in 1997.