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
在PREP2008笔记中提到:
as adj. (a) noun. as = (a) noun. as adj. as,其中第一个as是adv
那么可不可以把C也理解成这么一个结构呢?如果可以C是否正确?笔记中关于C项的解释是不是说的过去? 附笔记内容:
题目释义:Mixed with …, ethylene glycol, a compound…, is effective attemperature as low as…乙二醇,作为混有同样体积的水的化合物,通常作为汽车防冻剂使用,在低达华氏30度的时候才有效。 考点: 1. 比较结构as adj. a noun. as... : as....as之间是可以加 adj+noun的,不过好像只限于几种形式(张振邦): as+adj.+不定冠词+单数可数+as I haven't seen as old a car as this for years. as+adj.+零冠词+不可数名词+as 对应 prep2-9 (见类似题链接) as+adj.+零冠词+复数可数名词+as I don't smoke as expenesivecigarettes as those. 2. as adj. (a) noun. as = (a) noun. as adj. as,其中第一个as是adv. 选项分析: (A) Correct;主语是ethylene glycol,mixed过去分词前置修饰有被动的含义,Mixed的逻辑主语即句子的主语ethylene glycol。a compound 引导同位语从句,Be effective为句子谓语。 (B) so as只用于否定句中。 (C) at后面缺少名词作宾语 (D) at后面缺少名词作宾语;few不能形容温度 (E) at后面缺少名词作宾语;little不能形容温度
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