为了帮助大家在遇到黑体题时也能做对题目，走向更高分数，前程百利小编为大家讲解一下GMAT逻辑黑体题。在讲解最初，我们首先要知道什么是黑体题型。
一、黑体题的定义。
黑体字的做题要点：一定要把每一句话的关键词找对，然后看两个黑体句子中有没有转折词(如果有，说明两句话之间的意思肯定是相反的，那么“but”后面一定是结论;如果两句黑体字之间是顺承的关系，那么两句话的表述方向是一致的)。
二、黑体题型的例题讲解。
为了帮助大家理解黑体字的解题方法，下面我们分析两个例子，大家可以体会一下。
1、英文例题一：
Last year a record number of new manufacturing jobs were created. Will this year bring another record? Well, any new manufacturing job is created either within an existing company or by the start-up of a new company. Within existing firms, new jobs have been created this year at well below last year's record pace. At the same time, there is considerable evidence that the number of new companies starting up will be no higher this year than it was last year and surely the new companies starting up this year will create no more jobs per company than did last year's start-ups. So clearly, the number of new jobs created this year will fall short of last year's record.
In the argument given, the two portions in boldface play which of the following roles?
A. The first is presented as an obvious truth on which the argument is based; the second is a prediction advanced in support of the main conclusion of the argument.
B. The first is presented as an obvious truth on which the argument is based; the second is an objection that the argument rejects.
C. The first is presented as an obvious truth on which the argument is based; the second is the main conclusion of the argument.
D. The first is a generalization that the argument seeks to establish; the second is a claim that has been advanced in support of a position that the argument opposes.
E. The first is a generalization that the argument seeks to establish; the second is a claim that has been advanced in order to challenge that generalization.
分析题意：去年的工作岗位达到了新高。今年还会超过去年新工作的记录吗?因为新增的岗位来源于现有的公司和新建立的公司，而今年现有公司的岗位会比去年少。与此同时，没有证据说明今年新公司会提供比去年新公司多的职位。所以，今年的工作岗位会比去年的有所减少。
题意分析：黑体句中的每一个词都很重要，因为里面包含的信息量非常大。
两句话中没有转折词，说明两句话之间是顺承的关系。那么“the new companies starting up this year will create no more jobs per company than did last year's start-ups(没有证据说明今年新公司会提供比去年新公司多的职位)”和“the number of new jobs created this year will fall short of last year's record(今年的工作岗位会比去年的有所减少)”分别代表什么成份呢?
我们通过逻辑图体现这道题目的逻辑主线：
last year—record number—new manufacturing jobs
this year—another record?
new manufacturing jobs—1、an existing company 2、the start-up of a new company
an existing company—new jobs—this year
the start-up of a new company—new jobs—this year
surely—the new companies starting up—will new jobs—this year
Concluded：the number of new jobs—this year
选项分析：我们能明显地看出来，最后一句黑体话是结论，所以排除B、D和E选项，因为三个选项对黑体最后一句话的判断错误。看选项C说第一句黑体字是反对观点，从逻辑主线中我们没有看到反对观点，所以C排除。从第一句中间的“will”我们判断A选项中说的“预测”是正确的。
2、英文例题二：
A prominent investor who holds a large stake in the Burton Tool Company has recently claimed that the company is mismanaged, citing as evidence the company's failure to slow production in response to a recent rise in its inventory of finished products. It is doubtful whether an investor's sniping at management can ever be anything other than counterproductive, but in this case it is clearly not justified. It is true that an increased inventory of finished products often indicates that production is outstripping demand, but in Burton's case it indicates no such thing. Rather, the increase in inventory is entirely attributable to products that have already been assigned to orders received from customers.
In the argument given, the two boldfaced portions play which of the following roles?
A. The first states the position that the argument as a whole opposes; the second provides evidence to undermine the support for the position being opposed.
B. The first states the position that the argument as a whole opposes; the second is evidence that has been used to support the position being opposed.
C. The first states the position that the argument as a whole opposes; the second states the conclusion of the argument as a whole.
D. The first is evidence that has been used to support a position that the argument as a whole opposes; the second provides information to undermine the force of that evidence.
E. The first is evidence that has been used to support a position that the argument as a whole opposes; the second states the conclusion of the argument as a whole.
选项题意：BT公司的一位知名投资者说BT公司经营不善，证据是公司错误地在库存上升时没有相应地减少生产。虽然无法确定投资者的不满是否会带来除不良后果之外的其他影响，但是此处没被证实有其他影响。库存的增加反映了产出大于需求，但是对BT来说并非如此。相反，库存增加完全是因为已签的订单被退回来了。
逻辑主线：
Investor：the company—mismanaged
Evidence：the company's failure—slow—production—recent rise in its inventory
?
But—not justified
True：often—increased inventory—production>demond
But—increase in inventory—products—assigned to orders
选项分析：黑体字第一句说公司管理不善，事实上公司是有订单的，所以第一句黑体字的表述是错误的，选项中凡是对第一句话进行肯定的就都是错的。
黑体字第二句话前面有转折词“but”，根据我们刚才提到的，尽然文章转折后提出一个观点，那么它90%以上就是文章的结论(中心观点)，那么黑体字第一句话就是反对观点。
所以正确选项是C。
3、英文例题三：
Although the earliest surviving Greek inscriptions written in an alphabet date from the eighth century B.C., the fact that the text of these Greek inscriptions sometimes runs from right to left and sometimes from left to right indicates that the Greeks adopted alphabetic writing at least two centuries before these inscriptions were produced. After all, the Greeks learned alphabetic writing from the Phoenicians, and presumably, along with the alphabet, they also adopted the then-current Phoenician practice with respect to the direction of text. And although Phoenician writing was originally inconsistent in direction, by the eighth century B.C. Phoenician was consistently written from right to left and had been for about two centuries.
In the argument given, the two portions in boldface play which of the following roles?
题意：
1)有一些公元前8世纪的希腊碑文书写方向不统一，有的从右往左写，有的从左往后写(第一个黑体部分)。
2)希腊人的字母书写是从腓尼基人那里学来的，由此推测希腊人也采用了当时公认的腓尼基人的书写方向。
3)腓尼基人的书写的方向在起初是不确定的，但是到了公元前8世纪，腓尼基人的书写方向就始终是从右写到左了，并且到那个时候已经持续了大约2个世纪了。(第二个黑体部分)
结论：希腊人在这些碑文制作出来的至少两个世纪前就开始用字母书写了。
逻辑主线：
earliest surviving Greek—eighth century B.C.
—right<—>left
—> Greeks—alphabetic writing—two centuries before
Greeks—learned alphabetic writing—Phoenicians：Phoenician practice—the direction of text
Phoenician writing—originally—inconsistent in direction—the eighth century B.C. Phoenician—consistently—right—left—about two centuries.
选项分析：
看两句黑体字之间有没有转折词：After all(毕竟)在文中说明是顺城关系。
选项A说第一句和第二句话是用来描述的论据，来反驳结论，文中并没有转折词，所以并非转折关系，错误。从头到尾之后你会发现头的a strong case can be made that the Greeks actually adopted alphabetic writing at least two centuries earlier的这句话和结尾的for about two centuries呼应了,而过程中没有提到什么反对意见，所以CDE都排除了。这是作者的一个观点,相当于先提论点后论证。“they would surely ...”就是作者的主观判断，不是一个新发现。所以也就排除A了。不求每个字都懂，但大致意思要有个概念。
4、英文例题。
In countries where automobile insurance includes compensation for whiplash injuries sustained in automobile accidents, reports of having suffered such injuries are twice as frequent as they are in countries where whiplash is not covered. Presently, no objective test of whiplash exists, so it is true that spurious reports of whiplash injuries cannot be readily identified. Nevertheless, these facts do not warrant the conclusion drawn by some commentators that in the countries with the higher rates of reported whiplash injuries, half of the reported cases are spurious. Clearly, in countries where automobile insurance does not include compensation for whiplash, people often have little incentive to report whiplash injuries that they actually have suffered.
In the argument given, the two bold faced portion play which of the following roles?
A. The first is a claim that the argument disputes; the second is a conclusion that has been based on that claim.
B. The first is a claim that has been used support a conclusion for which the argument provides further evidence; the second is the main conclusion of the argument.
C. The first is evidence that has been used to support a conclusion for which the argument provides further evidence; the second is the main conclusion of the argument.
D. The first is a finding whose implications are at issue in the argument; the second is a claim presented in order to argue against deriving certain implications from that finding.
E. The first is a finding whose accuracy is evaluated in the argument; the second is evidence presented to establish that the finding is accurate.
分析题意：题目中说有保险国家的受伤人是无保险国家受伤人的2倍。有人质疑有保险国家的受伤人是虚报，作者说这种质疑没有被证实所以不能信之。进而提出自己的观点，造成2倍的原因是无保险国家的受伤就没有动力去申报。
逻辑主线：
Countries—automobile insurance—compensation—whiplash injuries—twice —无where whiplash
no objective test of whiplash
spurious reports of whiplash injuries
Nevertheless, these facts—the higher rates of reported whiplash injuries—half—reported
选项分析：第一句提出一个现象;第二句反驳对此现象做出的某个解释，第二句的deriving certain implications指的是conclusion drawn by some commentators that in the countries with the higher rates of reported whiplash injuries, half of the reported cases are spurious.也就是说，第二句的作用是反对评论家从此现象得到他们的结论。所以，正确答案是D。
例题练习：
Hunter: Many people blame hunters alone for the decline in Green rock National Forest's deer population over the past ten years. Yet clearly, black bears have also played an important role in this decline. In the past ten years, the forest's protected black bear population has risen sharply, and examination of black bears found dead in the forest during the deer hunting season showed that a number of them had recently fed on deer.
In the hunter's argument, the portion in boldface plays which of the following roles?
A. It is the main conclusion of the argument.
B. It is a finding that the argument seeks to explain.
C. It is an explanation that the argument concludes is correct.
D. It provides evidence in support of the main conclusion of the argument.
E. It introduces a judgment that the argument opposes.
例题分析：
1、黑体：题意：猎人说：很多人把GNF鹿数量减少仅仅归咎于猎人。但黑熊在这之中也扮演了重要角色。近10年，黑熊迅速增加。黑熊在猎鹿季节减少，这一事实表现了很多黑熊以鹿为食。
2、 “与作者相反”+ 转折(yet) + “与作者观点一致”(BA模式)
3、正确选项：选项五。辩论所反对的看法， 黑体中认为鹿的数量下降因为猎人的原因，yet后面解释了熊也是重要的原因，所以黑体的内容是整个论证所反对的。
4、其它选项：
选项一：是辩论的主要结论,论证中有yet, 而黑体是在yet之前，是论证所要反驳的。
选项二：是辩论所解释的一项发现，但在第一个黑体之后有yet，在这之前是反驳的对象，所以不应该是解释
选项三：是辩论支持的一个解释，因为论证中有yet, 所以不是支持。
选项四：支持了主要结论，论证的结论是熊也是鹿下降的原因，黑体说的是猎人的原因，所以肯定不是支持。
拓展阅读：
1、定义。
句子的作用题。问题中出现boldface这个单词的。GMAT逻辑中一类比较特殊的题目，称为Boldface题，也称“黑体题”，“黑脸题”，“BF题”。黑体题是考察黑体字部分在文中起到的作用，需要对文章整体进行把握。
2、标志词：英文标志词：boldface, play roles etc.
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