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题库 / Prep2007E1-SC-70
It is unclear whether chimpanzees are unique among nonhuman species in their ability to learn behaviors from one another, or if, when other animals are studied in as much depth, similar patterns would be found.
if, when other animals are studied in as much depth, similar patterns would be found
if other animals were studied with as much depth they would exhibit similar patterns
would similar patterns be found in other animals if they were studied in as much depth
whether similar patterns would be exhibited in other animals that were studied with as much depth
whether other animals would exhibit similar patterns if they were studied in as much depth
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2) when不能够引导条件从句
3) 习惯用语:in depth
(A) if应该改成whether;使用when从句来表示条件从句,错误
(B) if应该改为whether; with as much depth不符合习惯用法
(C) It is unclear whether… or would…结构不平行
(D) similar patterns would be exhibited in other animals表达笨拙,应该改为主动语态;with as much depth不符合习惯用法;用that限定性定语从句修饰animals无法表达出条件关系,改变了句子的合理意思 大仙注释：其实就是尊重前半截即可，前半截用主动
(E) 正确, It is unclear whether… or whether…结构平行;用语简洁,符合习惯用法;使用if从句表达条件关系,符合句子的逻辑意思
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those pronouns are in two completely different clauses, so they can absolutely stand for different nouns. as long as the meaning is clear in context, that isn't a problem.
2、GMAT中if只能表示如果，想表达是否必须用whether
3、D和E项的句子意思差异没有体会出来。
in depth是固定搭配，排除D
C 结构错误 if引导的虚拟语气中只有if从句可以省略倒装，主句不可以。"
You should not steal, regardless of whether the victim is rich or whether you might be caught.
Would similar patterns be found in other animals? (question)
I don't know whether similar patterns would be found in other animals. (statement)
D，那些被研究的动物会展现出相似的行为模式，that引导限制性定语从句，表示那些被研究的动物。这里的逻辑不是说那些被研究的动物是否会展现出，如果被研究的动物会展现出，那么我们可以推论与被研究的动物同属一类的动物也会展现出，所以这里不应该对展现出的动物进行限定。
E，如果其他动物被研究，他们会展现出相似的模式，if修饰谓语动词展现，逻辑是因为被研究，所以展现，ok
补充知识点：if只能表示“如果”，表达“是否”需用whether；when 不能引导条件状语从句。
in depth固定用法。
when不能引导条件状语从句。
E选项说：是否当这些动物被研究地足够深了，他们会表现出这样的特征。讲道理应该是是否当这些动物被研究地足够深了，他们会“被发现”有这样的特征吧。