关于as..as用法 江湖救急啊

花露水6

看下这两道题：
1、Mixed with an equal part of water, ethylene glycol, a compound commonly used as an automotive antifreeze, is effective at temperatures as low as –30 degrees Fahrenheit.
A. temperatures as low
B. temperatures so low
C. as low temperatures
D. as few            
E. as little
2、 The Environmental Protection Agency frequently puts mandatory controls on toxic substances that present as little risk as one in a million chances to cause cancer.
(A) as little risk as one in a million chances to cause
(B) as little risk as one chance in a million of causing
(C) as little risk as one chance in a million that it will cause
(D) a risk as little as one chance in a million for causing
(E) a risk as little as one chance in a million for it to cause

第一题答案：A
第二题答案：B

PREP笔记给的解释说：第一题的C：at 后面直接加as adj+n as就是少宾语
我不明白的是为什么第一题的C：at 后面直接加as adj+n as就是少宾语 而第二题present后面加as adj+n as就不算
这个问题从一战困扰我到现在，各位XDJM们 江湖救急啊。。。

MiaZhang

这个问题比较纠结。。。我说一下我的看法吧
as + adj+n+as...结构一般是名词的比较，但关键是要从语义上理解到底是谁和谁比

第一个题，at temperatures as low as –30 degrees Fahrenheit，–30 degrees Fahrenheit是对low的限定，表示温度多低，不能跟temperatures比较。类似的还有as early as表示对时间上的限定

第二个题， toxic substances that present  as little risk as one chance in a million，one chance in a million是与little risk的比较，第二个as可以变成一个等号，表示little risk的大小

说得好抽象。。。就是要看第二个as后面的部分到底是对谁的限定和修饰，名词还是形容词

kiwifoodtown

这题以前有人问过，贴出来或许有点帮助
http://forum.chasedream.com/GMAT_SC/thread-779733-1-1.html

花露水6

这个问题比较纠结。。。我说一下我的看法吧
as + adj+n+as...结构一般是名词的比较，但关键是要从语义上理解到底是谁和谁比

第一个题，at temperatures as low as –30 degrees Fahrenheit，–30 degrees Fahrenheit是对low的限定，表示温度多低，不能跟temperatures比较。类似的还有as early as表示对时间上的限定

第二个题， toxic substances that present  as little risk as one chance in a million，one chance in a million是与little risk的比较，第二个as可以变成一个等号，表示little risk的大小

说得好抽象。。。就是要看第二个as后面的部分到底是对谁的限定和修饰，名词还是形容词

-- by 会员 MiaZhang (2012/12/14 10:24:39)

也可以理解30 degrees Fahrenheit是temperatures而不是形容low的啊，况且30度本来也是温度呀。还有one chance in a million可以和little作比较啊 这都无可厚非啊

花露水6

FROM RON神：
more generally, you can't have "as + adj + PLURAL + as...". this construction is only ok if the noun is singular.
e.g.
i have never met as despicable a person as your sister's boyfriend.
or
i have never met a person as despicable as your sister's boyfriend.
both correct

--

i have never met people as despicable as your friends.
--> correct
* BUT *
i have never met as despicable people as your friends.
--> incorrect.

by the way, this is not something i ever learned consciously, but it's something that i can figure out by considering enough examples.
this point is an excellent illustration of why it's important to develop an intuitive feeling for the way the language works. no one is going to learn -- or teach -- all of these things as "rules", but, by observing the language with an eye toward developing your intuition, you'll be able to figure a lot of them out.

MiaZhang

as + adj + PLURAL + as...". this construction is only ok if the noun is singular  这句话我认为不是绝对的

我们经常见到as many +PLURAL + as的结构不是吗？

Ron的解释应该是没有问题的，但是如果表示数量的部分在adj位置上，是不是有例外呢？

Open to discuss

花露水6

嘎嘎 举个例子呢？这么暴力想 想不出来诶。。。

stt300

嘎嘎 举个例子呢？这么暴力想 想不出来诶。。。

-- by 会员 花露水6 (2012/12/14 16:03:57)

og12-125. Today,because of improvements in agricultural technology, thesame amount of acreage produces twice as many apples as it did in 1910.
这是og原题，所以我也弄不明白Ron说的了，哪位nn帮帮忙啊！
关于temperatures这题，一般as..as比较第一个as后引出的部分大多是宾语或者补语，所以看一下第二个as后的成分是否平行即可，但是这题is at temperatures as low as.. 这个low可以理解为adj修饰temperatures，然后-30 degrees Fahrenheit是和low平行吗？大家看过一个jeffery2541发的as的帖子吗？他提到第一个as后成分只要不是宾语或者补语的话，第二个as后成分只要与第一个as后成分平行即可

TerraceHo

嘎嘎 举个例子呢？这么暴力想 想不出来诶。。。

-- by 会员 花露水6 (2012/12/14 16:03:57)

建議lz先記住Ron神的用法吧，完全可以解答上面的兩道題的。
另外，我覺得第二題選B有一個很重要的原因是chance的搭配。
the chance of doing something 表示做某事的可能性。
the chance to do something 表示做某事的機會。

根據後面的in a million理解，這裡表示的是可能性，所以用of，只有B。

TerraceHo

嘎嘎 举个例子呢？这么暴力想 想不出来诶。。。

-- by 会员 花露水6 (2012/12/14 16:03:57)

og12-125. Today,because of improvements in agricultural technology, thesame amount of acreage produces twice as many apples as it did in 1910.
这是og原题，所以我也弄不明白Ron说的了，哪位nn帮帮忙啊！
关于temperatures这题，一般as..as比较第一个as后引出的部分大多是宾语或者补语，所以看一下第二个as后的成分是否平行即可，但是这题is at temperatures as low as.. 这个low可以理解为adj修饰temperatures，然后-30 degrees Fahrenheit是和low平行吗？大家看过一个jeffery2541发的as的帖子吗？他提到第一个as后成分只要不是宾语或者补语的话，第二个as后成分只要与第一个as后成分平行即可

-- by 会员 stt300 (2012/12/17 16:49:01)

非常感謝ls po出來的counterexample。但是我覺得並沒有違反Ron的意思。
Ron說的是僅僅使用as...as（像...一樣...）連接的時候，就要分成單複數。
但是這裡as...as是用在倍數的結構裏面，完整的結構應該是“n times + as ... as”，所以用法可以不一樣。

另，在理解as...as的時候，建議ls不要去糾結一定要parallelism，meaning是關鍵。
temperatures as low as blah~ 這裡表示的是“溫度低至blah~度”。如果ls一定要去糾parallelism的話，平行的雙方也應該是temperature和blah~。