请教: OG11-4, 怎么看double的词性和作用呢?(好像搞懂了)

A. twice as much as 1977

B. twice as many as 1977

C. double what it was in 1977

D. double the figure for 1977

E. a number double that of 1977’s

答案是D.

关于D本身没有疑问.

要请教的是,OG在解释选择double 时说,a number can be doubled. 可是,从其本身形式到整个句子构成,double 在此处都大可能是动词;

如果double 是形容词, double the figure 这个语序又很奇怪.

怎么看double的词性和作用呢?

是呀!

不敢回答,顶一下!

是有点怪.

还是没想清楚......

又看到下面的题目, 好像搞懂了:

Sec-1 21.   According to surveys by the National Institute on Drug Abuse, about 20 percent of young adults used cocaine in 1979, doubling those reported in the 1977 survey.

(A) doubling those reported in the 1977 survey

(B) to double the number the 1977 survey reported

(C) twice those the 1977 survey reported

(D) twice as much as those reported in the 1977 survey（E）

(E)
     twice the number reported in the 1977 survey

double 和twice 是副词

就像下面题目中的 most notably William Randolph Heart's monmental estate at San Simeon

大全Sec-16-7.     A prolific architect who worked from the turn of the century until the late 1950’s, Julia Morgan designed nearly 800 buildings in California, perhaps most notably William Randolph Hearst’s monumental estate at San Simeon.

(A) Julia Morgan designed nearly 800 buildings in California, perhaps most notably William Randolph Hearst’s monumental estate at San Simeon

(B) perhaps the most notable of the nearly 800 buildings in California designed by Julia Morgan was William Randolph Hearst’s monumental estate at San Simeon

(C) of the nearly 800 buildings in California designed by Julia Morgan, perhaps the most notable was William Randolph Hearst’s monumental estate at San Simeon

(D) nearly 800 buildings in California were designed by Julia Morgan, of which William Randolph Hearst’s monumental estate at San Simeon is perhaps the most notable（A）

(E) William Randolph Hearst’s monumental estate at San Simeon is perhaps the most notable of the nearly 800 buildings in California designed by Julia Morgan