看prep笔记有两道题,搞不懂两道题分别选的doubling和twice,先贴上原题 The number of people flying first class on domestic flights rose sharply in 1990, doubling the increase of the previous year.
A. doubling the increase of
B. doubling that of the increase in
C. double as much as the increase of
D. twice as many as the increase in
E. twice as many as the increase of
According to surveys by the National Institute on Drug Abuse, about 20 percent ofyoung 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) twice the number reported in the 1977 survey
我是想问,如果According这道题的A选项,改成doubling the number reported in the 1977 survey 可以选么。。
而在这个例子里,前面的分句并不存在一个明确的数值: The number of people flying first class on domestic flights rose sharply in 1990, doubling the increase of the previous year.
2、在GMAT里面考twice的常见用法: a.twice as much as sth.。这个sth.一定是不可数的。即便是代词,他也一定要指示不可数名词。 b.twice as many as sth.。这个sth.一定是可数的。代词指代也一定是可数的。 c.twice + n.。我查了一下Oxford Adv,上面写道:double in quantity,rate,etc。这里的n.可以是题目中的the number,或者是the size,rate这些东西。这里twice的用法是跟double一样的。
3、GMAT里面double的常见用法: a.double作v.,后面直接加名词或者名词性代词。 b.double作adj.,有两个意思,一个是两倍,一个是双重。记得做过有一道题就是double作adj.,因为可能会让人误认为是双重的意思给排了。 c.double没有 double as much/many as 的用法。
结果状语,一定要和主句有一种导致的意味。而且Ving的逻辑主语一定applies to主句主语。像LZ贴的第一句: The number of people flying first class on domestic flights rose sharply in 1990, doubling the increase of the previous year.
同位语,一般是对comma前面最近词的修饰或者是补充说明,而且一般都是object。就像第二题。 According to surveys by the National Institute on Drug Abuse, about 20 percent ofyoung adults used cocaine in 1979,twice the number reported in the 1977 survey.(这句话的twice the number reported in the 1977 survey就是一个同位语)
但其实究竟是Ving,还是同位语比较好,很难分辨,甚至我觉得一定要有语境才能说那个更合适。GMAC应该也不会让你这样分辨,所以当这两个同时出现的时候一定是有什么别的绝对性错误,比如twice as much as后面接了一个可数名词什么的。
According to surveys by the National Institute on Drug Abuse, about 20 percent ofyoung 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) twice the number reported in the 1977 survey
这道题,根据同位语的使用原则,twice应该是指代前置名词,可是这里前置名词是1979,不对。所以我第一时间是把twice结构的CDE排了,B本身就不对,没有svo, to do sth的结构存在。就看A,发现有个those,可是前半句those的指代有问题,能够指代的复数,表示数量的,只能是:20 percent ofyoung adults 。但是20 percent ofyoung adults reported in the 1977 survey语义有问题。所以我发现这个those不能够存在
D. twice as many as the increase in E. twice as many as the increase of
这两个结构本身就是错的,因为increase是不可数名词,所以应该用as much as,而不是as many as
此外这个句子未划线的前半句是:the number of xxx,所以后面就不应该用doubling/twice as many/much as xxx的结构。因为the number/the amount这种词和as many/much as是redundant的
所以根据这个知识点C也是有问题的
此外increase这个词作为noun, increase in noun表示noun数量的增加,是指noun这个sth本身的增加。我想做过gmat的应该都遇到过这种increase in sth的结构。可是这里如果用increase in the previous year,这个noun变成the previsou year就有问题了,去年本身没有increase,如果要表达去年这个时间状态应该用increase of the previous year。我记得有道比较级的题目就是这么表达的。如:in its return of 1910-1911