GMAT考试中，其中有一项科目是句子改错题，这主要是对GMAT语法的考察。一个完整的句子怎么样去判断它的正确与否，是我们搞清句子结构和词汇运用等方面的功底。上一篇小编就GMAT语法实例解析为大家介绍了3道题，接下来还有3道题分享给大家，大家不要担心，每天最多六道题，不会占用考生太多时间。小编希望大家都能劳逸结合，考出好成绩。
15. State officials report that soaring rates of liability insurance have risen to force cutbacks in the operations of everything from local governments and school districts to day-care centers and recreational facilities.
(A) rates of liability insurance have risen to force
(B) rates of liability insurance are a force for
(C) rates for liability insurance are forcing
(D) rises in liability insurance rates are forcing
(E) liability insurance rates have risen to force
soaring：正在涨rates of .... have risen... A语义重复涨:soaring/rise/raise/increase/growrises...D语义重复risen...E语义重复答案C
16. Paleontologists believe that fragments of a primate jawbone unearthed in Burma and estimated at 40 to 44 million years old provide evidence of a crucial step along the evolutionary path that led to human beings.
(A) at 40 to 44 million years old provide evidence of
(B) as being 40 to 44 million years old provides evidence of
(C) that it is 40 to 44 million years old provides evidence of what was
(D) to be 40 to 44 million years old provide evidence of
(E) as 40 to 44 million years old provides evidence of what was
provides/provide 动作发出者：fragments-->provideB C 错误 E错误estimate: 1.estimate to be/do, be estimated to be/do 2.it is estimated that... 3.estimate at (price) 在GMAT中不考答案D
17. In his research paper, Dr. Frosh, medical director of the Payne Whitney Clinic, distinguishes mood swings, which may be violent without their being grounded in mental disease, from genuine manic-depressive psychosis.
(A) mood swings, which may be violent without their being grounded in mental disease, from genuine manic-depressive psychosis
(B) mood swings, perhaps violent without being grounded in mental disease, and genuine manic-depressive psychosis
(C) between mood swings, which may be violent without being grounded in mental disease, and genuine manic-depressive psychosis
(D) between mood swings, perhaps violent without being grounded in mental disease, from genuine manic-depressive psychosis
(E) genuine manic-depressive psychosis and mood swings, which may be violent without being grounded in mental disease
distinguish:1.distinguish between A and B 2.distinguish A from B 两种用法的区别不考 ...without their being grounded ... without doing/sth. 之间不能插入任何成分 and--> between... and... C正确
may 情态动词.情态动词在GMAT考试中应该尽量保持perhaps这里把may 换成perhaps，就是一个Effective有效性错误
1.distinguish: distinguish A and B/distinguish A from B2.without doing/sth.3.情态动词应该尽量保持
其实在整个考试项目中，GMAT语法的考察都是以句子或段落和形势存在的，掌握其内容是非常重要的。上述就是小编为大家介绍的GMAT语法实例解析，希望考生能够掌握。更多GMAT语法实例解析，小编会不断为大家更新。希望考生能够多动笔多练习，才能在实践中找出错误，掌握真理。最后祝大家GMAT考试成功。
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