想要迅速提高GMAT语法考试成绩，考生就需要熟练掌握一些GMAT语法考试中的必备知识点，并在解题的过程中灵活运用。今天澳际留学小编就来对GMAT语法考试中的必备知识点进行简单的介绍，希望能够为同学们备考GMAT语法考试带来帮助。

　　3) OG 161. A wildlife expert predicts that the reintroduction of the caribou into northern Minnesota

　　would fail if the density of the timber wolf population in that region is more numerous than one wolf for every 39 square miles.

　　(A) would fail if the density of the timber wolf population in that region is more numerous than

　　(B) would fail provided the density of the timber wolf population in that region is more than

　　(C) should fail if the timber wolf density in that region was greater than

　　(D) will fail if the density of the timber wolf population in that region is greater than

　　(E) will fail if the timber wolf density in that region were more numerous than

　　Answer: D

　　以下是引用薰衣紫草在2005-4-12 6:53:00的发言：

　　虚拟一般指不太有可能发生的事情, 如: If

　　I were you, .....; 或者过去已成的事实, 而说的人好象吃了后悔药, 回到过去改变它. If I knew it, I should have.....

　　161表明一件事情发生的环境, 条件, 陈述了一个事实, 即在什么样的情况下reintroduction会失败

　　4) Prep Test2-58 (非虚拟)

　　If current trends continue, by the end of year 2010 carbon emissions in the United States will soar to a level more than one-third higher than were those in 1990, according to official projections.

　　(A) will soar to a level more than one-third higher than were those

　　(B) will soar to a level more than one-third higher than that

　　(C) would soar to a level more than one-third higher than it was

　　(D) would soar to a level more than one-third higher than those

　　(E) would soar to a level more than one-third higher than they were

　　如果从句内容是现实中明显可行的或者可能的，那就不用虚拟了

　　此处如果if分句是虚拟语气，continue就不会是原形啦

　　既然continue是原形，表明作者觉得这个if是很可能发生的，所以后面也就不需要用虚拟语气了

　　5) OG50. As a baby emerges from the darkness of the womb with a rudimentary sense of vision, it would be rated about 20/500. or legally blind if it were an adult with such vision.

　　(A)

　　As a baby emerges from the darkness of the womb with a rudimentary sense of vision, it would be rated about 20/500, or legally blind if it were an adult with such vision.

　　(B)

　　A baby emerges from the darkness of the womb with a rudimentary sense of vision that would be rated about 20/500, or legally blind as an adult

　　(C)

　　As a baby emerges from the darkness of the womb, its rudimentary sense of vision would be rated about 20/500; qualifying it to be legally blind if an adult

　　(D)

　　A baby emerges from the darkness of the womb with a rudimentary sense of vision that would be rated about 20/500; an adult with such vision would be deemed legally blind.

　　(E)

　　As a baby emerges from the darkness of the womb, its rudimentary sense of vision, which would deemed legally blind for an adult, would be rated about 20/500.

　　Answer(D)

　　这道题也不是虚拟语气。

　　would有一些词义是will没有的，即(确定的结果)将会，常常会，可能会，习惯性地会，这时候用would表结果而不能用will。

　　6) Q14: (表推测的虚拟语气)

　　Not one of the potential investors is expected to make an offer to buy First Interstate Bank until a merger agreement is signed that includes a provision for penalties if the deal were not to be concluded.

　　A.is expected to make an offer to buy First Interstate Bank until a merger agreement is signed that includes a provision for penalties if the deal were

　　B is expected to make an offer for buying First Interstate Bank until they sign a merger agreement including a provision for penalties if the deal was

　　C. is expected to make an offer to buy First Interstate Bank until a merger agreement be signed by them with a provision for penalties if the deal were

　　D.are expected to make an offer for buying First Interstate Bank until it signs a merger agreement with a provision for penalties included if the deal was

　　E are expected to be making an offer to buy First Interstate Bank until they sign a merger agreement including a provision for penalties if the deal were

　　Answer: A

　　以上情况是虚拟语气，具体说叫"推测条件句"中的虚拟.

　　虚拟语气：把动作当作一种只存在于讲话人想象中的"假设"或者"推测"，而不是当作客观现实中的真实事件.

　　推测条件句的结构：

　　1、if subject +动词过去式

　　2、if subject +should +动词原形

　　3、if subject +were to do

　　本句属于3

　　以上对GMAT语法考试中的常见备考要点进行了较为详细的阐述，考生不妨以此为鉴，通过反复练习逐步掌握其在GAMT语法考试中的使用规律，从而在GMAT语法考试中发挥出更好的水平。

相关链接：

1.GMAT语法考试中虚拟语气的使用(I)

2.GMAT阅读常见题型解题攻略：类比题

3.论“持久战” GMAT考试备考有感

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