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题库 / Prep2007E2-SC-147
Australian embryologists have found evidence that suggests that the elephant is descended from an aquatic animal, and its trunk originally evolving as a kind of snorkel.
that suggests that the elephant is descended from an aquatic animal, and its trunk originally evolving
that has suggested the elephant descended from an aquatic animal, its trunk originally evolving
suggesting that the elephant had descended from an aquatic animal with its trunk originally evolved
to suggest that the elephant had descended from an aquatic animal and its trunk originally evolved
to suggest that the elephant is descended from an aquatic animal and that its trunk originally evolved
题目分析：
略。
选项分析：
A选项：and是连词，应该连接两个句子。本选项and身后缺少谓语动词。
另外，本选项整个划线部分是evidence的定语从句，这个定语从句应该改为不定式短语。这点考查了“不定式和从句的区别”。用之于本题，主句“澳大利亚胚胎学家发现证据”这件事会直接影响“证据能表明大象的进化史”这件事的发生与否（如果不发现证据，证据自然什么都无法证明）。
B选项：定语从句错误同(A)。
C选项：本选项也是evidence的定语，是一个现在分词短语。这点考查了“不定式和ing的区别”。同理于选项(A)，本题中evidence的定语必须是不定式形式。另外，had descended是过去完成时，表示某一个在过去的过去发生的事件。由于证据表明的是“客观真理”，不是某一个事件，所以应该过一般现在时而非过去完成时。
D选项：“大象来自于水生动物”是一个客观存在的事实，所以应该用一般现在时而不是过去完成时。（该错误同选项(C)）
E选项：Correct. 本选项在语法和逻辑上均是正确的。
这里的suggest用于一个很严谨的科学证明，而不是某个简单推理，因此控制力很强，用to do而不是doing
had表示过去的过去，要用had要么是有一个过去的时间，要么是有一个过去的动作，had的动作发生在前二者之前。
解題流程問題，這題非常多容易且重要解題點，這題如果在相對選項用that / to，已經不是在考邏輯主語，而是在考suggest 和 found這兩個動作是有關無關，如果沒把握，應該避開這個解題點，但是若是在這裡討論到底有沒有表目的，邏輯主語誰為合理，的確不妥，就像上面同學一樣的看法，有人覺得是表目的合理；後面有be descended from 重要慣用語，及句子結構傾向性，子句優於獨立分詞結構，以及名詞子句平衡補出that，這些都是簡單好用的判題點
evidence to suggest that the elephant is descended from an aquatic animal，如果没有这个证据，那么我们不会知道（suggest）大象起源于水生动物，所以用to表示evidence和显示大象起源于水生动物这件事之间的逻辑关系（evidence带来了后者状态的改变）
同理，There is no evidence to suggest which approach offers superior returns to the investors.如果有证据，则哪种方式能为投资者带来高回报是会被suggest出来的，二者的逻辑关系也是evidence存在与否会带来后者状态的改变，用to，不用that从句和分词引导的定语从句
evidence to suggest……，能显示……的证据，如：There is no evidence to suggest which approach offers superior returns to the investors.没有证据表明哪种方式能为投资者带来高回报。
evidence that，There is no evidence that the meeting actually took place. 没有证据表明这个会议确已举行。
不定式、现在分词和定语从句的区别
感觉这里to也没问题跟found也有关系 found ... to...
客观真理用一般现在时
外延与内涵
可以和另一个题目比较辨析一下吗。
OG2019-SC-715
Digging in sediments in northern China, scientists have gathered evidence suggesting that complex life-forms emerged much earlier than previously thought.
过去完成时表示事情已经彻底结束，和现在没有关系
to suggest ... 是evidence的定语，所以与find之后不能用不定式不冲突。
b中descended是定语修饰大象，
descend应使用被动语态，ba descended起源于
不定式vs ving
首先，不要一看到to do 结构就认为是错的；其次 记住考点的顺序，主谓一致之后就考虑时态的问题。
A选项and 之后不对，B选项句子的意思改变，变成suggest the elephant 并且has suggested 也不对
C选项 had done 时态不对，大象来自于水生动物”是一个客观存在的事实 所以不能用过去完成时
D错误同C
客观真理用一般现在时
the "with" modifier is attached directly to the old animal (the one from which the elephant is descended). that's not the intended message of the sentence: the sentence is meant to describe the evolution of the elephant's trunk, not some earlier animal's trunk.
（转自ron)2."has descended" means "has moved downward". this can be in either a literal sense (he has descended to sea level from a height of 8000 feet) or a metaphorical sense (i don't want to descend to the level of common street thugs), but it can't refer to ancestry.
if you mean to discuss ancestry, which is clearly the case here, then you must use "is descended".
还是Ron的解释好理解
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1."evidence to suggest" and "evidence that suggests" are both acceptable in this sort of context. neither is a basis for elimination.normally you would see "evidence that suggests"
however, they've used "evidence to suggest..." here, in order to avoid writing evidence THAT suggests THAT xxx. not because it's wrong -- just because it's ugly.
同意
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