Researchers hypothesize that granitic soil is the ideal construction material for the desert tortoise because it is not so hard that it makes burrowing difficult or so soft that it could cause tunnels to collapse.
so hard that it makes burrowing difficult or so soft that it could cause
hard enough to make burrowing difficult or soft enough as to cause
so hard as to make burrowing difficult or soft enough so it causes
as hard as to make burrowing difficult or as soft as to cause
too hard, making burrowing difficult, nor too soft, so as to cause
题目分析:
本题难度较大,尤其是选项(A)和选项(D)之间,可能有些难以抉择。
选项分析:
选项A:Correct. 本选项在语法和逻辑上均是正确的。
选项B:需将不定式短语to make burrowing difficult和to cause tunnels to collapse改为结果状语从句,这点考查了不定式和从句的区别。用之于本题,主句讲的是:
花岗岩土壤并没有那么硬,也没有那么软(hard enough/soft enough)
在主句所讲的状态出现时,显然,让“掘土更难”和“让隧道垮塌”这两件事均不会开始发生,也不会让这两件事从开始变结束。
选项C:不定式错误同选项(B)。另外,enough和so是重复的。
选项D:不定式错误同选项(B)。
选项E:本选项的错误很容易看出来。too…to…句型是大家在初中就学过的,至少应该写成这个句型,以避免语法错误(当然,改成too…to…句型也不正确,依然存在不定式的问题)。
在A is as adj. as B这个结构里,最要紧的是第二个as
第二个as的出现就表明了,你是在对比两件事物,那就必须保证这个A和B是可比的,是同种的
The book is not as good to read. 这个as就是为了强调good的程度,而to read是我要说的动作。
而The book is not as good as that one. 第一个as还是为了强调good的程度,而第二个as就表明我是在比较两个东西。
那具体到The soil is not as hard as to make it difficult to burrow....
这个第二个as的出现,明显就应该表明我是要比较两个东西了,可是"to make it difficult to burrow",暂且不管它是不是名词结构,它和那个soil都不是一个概念,不可比。这个才是最最主要的错误点~
D选项as...as比较前后两个事物,但后面是to do,非名词,故错误
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