PREP SC : Mixed with an equal part of water, ethylene glycol

[eggpain24]

or just because the construction "as （low） temperature as" is wrong for immediately following the preposition " at"

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.

thx for your further advice

I think what I ask is a subtle point, but I just try to learn more from the correct choices

there will always be more explicit splits in SC questions

BTW, your explanation is always insightful and detailed

thx again!

[jlucero]

Glad that it helped!

[divineacclivity]

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

Ron, the two sentence have exactly the same meaning, right? If no, please explain the difference in their meanings.
thanks in advance.

[RonPurewal]

they're basically the same, yeah.

in the speech of native speakers, the first one is more emphatic/judgmental than the second one; however, that sort of thing clearly isn't tested here.

[divineacclivity]

thank you, Ron, beautiful explanation o the topic as usual.

[tim]

:)

[thanghnvn]

as adjective as

not so adjective as

are correct idioms

is that right?

[RonPurewal]

as adjective as

this one is used to make comparisons, yes.

not so adjective as

i'm not sure about this one; i'd be interested in seeing the kind of context in which you'd use it. can you post a couple of examples, please?

thanks

[thanghnvn]

I am as intelegent as you are

I am not so intelegent as you are

both above pattern happen in og books and so are gmat standards.

Pls, correct me.

[tim]

okay look, i honestly don't know what you are asking here. if you have actually seen these used in OG examples where they are given as correct sentences (which it sounds like you say you've seen), then you have your answer..

BTW i notice you didn't provide the examples Ron asked for. if you provide concrete examples it is much easier to help you..

[Haibara]

or just because the construction "as （low） temperature as" is wrong for immediately following the preposition " at"

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.

Ron, could you kindly edit the description---more generally, you can't have "as + adj + PLURAL + as...", this construction is only ok if the noun is singular.---in the quote more precisely or accurately in accordance with what you said on the 4th floor of this thread? problem-with-as-as-t24947.html?hilit=Mixed%20with%20an%20equal%20part%20of%20water,%20ethylene%20glycol,

Because if I hadn't seen the thread in the link, I would consider all structures like "as + adj + PLURAL + as..." wrong.

Sorry for troubling you.
Thanks Ron.

[RonPurewal]

Well, you've seen the link. (And you've kindly provided the link, so, other readers will see it too.) So, I guess the problem has been addressed. (:

[sdfsdfsdfs481]

I am confused by the "-" punctuation. I thought "-" should be regard as ",". So I choose (C) as low temperatures, in which 30 degrees Fahrenheit can be seen as the appositive of temperatures. But I have to admit that (C) ... at as low temperatures seems awkward grammatically and (A) seems correct except the use of "-" punctuation. In this problem, I think "-" punctuation has no meaning and can be a " " space character (I've never seen such "-" punctuation usage in other questions).

... is effective at temperatures as low as - 30 degrees Fahrenheit.
can be seen as
... is effective at temperatures as low as 30 degrees Fahrenheit.

Is it correct?

[RonPurewal]

that's a negative sign.

[sdfsdfsdfs481]

Thank you Ron.

that's a negative sign.