GMAT句子改错题(sentence correction)，是整个GMAT考试中对考生英语语法能力考查要求最高的题型，也往往是中国学生最为头疼的一类题目。没有扎实的语法基础和一定的逻辑分析能力，想要做好句子改错题难度极高。如何提升GMAT句子改错题的解题能力?下面小编就为大家整理了一些经典例题，结合实例分析为大家讲解GMAT句子改错题的解题思路和方法技巧。
实例题目：
Combining enormous physical strength with higher intelligence, the
Neanderthals appear as equipped for facing any obstacle the environment could
put in their path, but their relatively sudden disappearance during the
Paleolithic era indicates that an inability to adapt to some environmental
change led to their extinction.
(A) appear as equipped for facing any obstacle the environment could put in
their path,
(B) appear to have been equipped to face any obstacle the environment could
put in their path,
(C) appear as equipped to face any obstacle the environment could put in
their paths,
(D) appeared as equipped to face any obstacle the environment could put in
their paths,
(E) appeared to have been equipped for facing any obstacle the environment
could put in their path,
选项分析：
(A)appear as equipped for facing any obstacle the environment could put in
their path,
【错误1】 句子意思：一般现在时的“appear as
equipped”表意为“Neanderthals”看起来对当前的自然的障碍有所准备，体现不出是在他们生活的年代对自然的障碍有所准备。但根据句意，本句讨论的应为“Neanderthals”对他们生活的年代的自然的障碍有所防备，所以应使用“appear
to have been equipped”意为“(现在)看来在过去(即其生活的年代)对自然的障碍有所准备”。
【错误2】 固定搭配：“对做某事有准备”应使用“equipped to do”，而非“equipped for doing”。
(B)appear to have been equipped to face any obstacle the environment could
put in their path,
【正确】 一般现在时的“appear”连接“to have been equipped”(“to have
done”结构)，“appear”表明古人类“Neanderthals”是现在“appear(看起来)”，而“to have been
equipped”表明，“equipped”是发生在“appear”之前，也就是过去的事，其表达的意思为“Neanderthals现在(在研究者)看来在过去(Neanderthals生活的古代)是对自然困难有准备的。
【大意】
结合了极强的力量和更高的智慧，Neanderthals人看起来在当年是对自然困难有所准备的，但他们在旧石器时代相对突然的消失暗示着他们没能够适应一些最终导致他们灭绝的环境变化。
(C)appear as equipped to face any obstacle the environment could put in their
paths,
【错误】 句子意思：见(A)中【错误1】。
(D)appeared as equipped to face any obstacle the environment could put in
their paths,
【错误】
动词时态：“Neanderthals”并不是“在过去看起来对自然的障碍有准备”，而是“在现在看起来对过去(即其所生活的年代)的自然障碍有准备”，因此使用一般过去时的“appeared”更加合理。
(E)appeared to have been equipped for facing any obstacle the environment
could put in their path,
【错误1】 句子意思：类似地，见(A)中“句子意思”，“appeared”本应为“appear”。
【错误2】 固定搭配：见(A)中【错误2】。
解题思路：
本题的难度在于需要根据日常逻辑判断语句的本意——“Neanderthals现在看起来在过去对自然灾害有所准备”，因此只有“appear to have
been equipped”中一般现在时的“appear”表示“现在看起来”，而“to have been
equipped”表示过去有所准备。因此只能选择(B)。
