这些题型解题要点只提炼了一些比较实用的技巧，这些技巧简单来看并没有什么，但是在解题的过程中却能够体会到它们融入其中，，下面大家就通过两道例题体会一下吧。
一、GMAT逻辑削弱题的解题步骤
1、看原文。
找出结论和推出该结论的前提。特别注意结论的特殊性和具体性。
2、找答案。
用结论的具体性去区分有关无关，并结合TEST。对于特殊类，先预测出答案，用此预测去找答案。
3、检正答案。
问自己，是否该答案使作者再考虑他的观点或迫使作者做出反应或原文该前提能证明该结论吗。
(详情请看 GMAT逻辑削弱题型讲解 )
二、GMAT逻辑削弱题几种特殊类型
1、原文前提和结论关系不密切：正确选项直接WEAKEN结论。
2、因果型结论。
即原文给出两件事，然后得出结论说是一件事(因)导致另一件事(果)。WEAKEN该结论的方法包括：
A、是其他原因或可能导致该结果。
B、割断因果：或有因无果或有果无因。
C、因果颠倒了。
D、显示因果关系的资料不准确。
3、条件型结论。
结论带条件(即为充分必要)。WEAKEN的方法显示充分条件成立，必要条件可以不成立。或举反例，或提供有关信息。
4、原文是类比：WEAKEN方式为两者本质不同。
5、调查：有效性受怀疑(被调查的没代表性等)。
(详情请看 GMAT逻辑削弱题的类型 )
三、GMAT逻辑取非例题分析
例一：GWD 2-Q17
Brochure: Help conserve our city’s water supply. By converting the landscaping in your yard to a water-conserving landscape, you can greatly reduce your outdoor water use. A water-conserving landscape is natural and attractive, and it also saves you money.
Criticism: For most people with yards, the savings from converting to a water-conserving landscape cannot justify the expense of new landscaping, since typically the conversion would save less than twenty dollars on a homeowner’s yearly water bills.
Which of the following, if true, provides the best basis for a rebuttal of the criticism?
A. Even homeowners whose yards do not have water-conserving landscapes can conserve water by installing water-saving devices in their homes.
B. A conventional landscape generally requires a much greater expenditure on fertilizer and herbicide than does a water-conserving landscape. (他因削弱)
C. A significant proportion of the residents of the city live in buildings that do not have yards.(与主题无关)
D. It costs no more to put in water-conserving landscaping than it does to put in conventional landscaping.
E. Some homeowners use more water to maintain their yards than they use for all other purposes combined.
例题分析：
1、读原文，分析原文中的句子成份：
reason: 改变之后在水费上每年仅能节省不到20$。
conclusion: 安装landscape的费用>它能节省的费用。
weaken: 以前的landscape在fertilizer 和 herbicide方面需要的费用远远大于water -conserving landscape所需要的费用。
2、将原文抽象话，提取逻辑链：
原文：A方法在某个方面没有B方法好。
削弱：B方法在其他方面有更差的结果。
3、正确答案：B。
例二：GWD5-Q30:
Printwell’s Ink Jet Division manufactures ink-jet printers and the ink cartridges they use. Sales of its ink-jet printers have increased. Monthly revenues from those sales, however, have not increased, because competition has forced Printwell to cut the prices of its printers. Unfortunately, Printwell has been unable to bring down the cost of manufacturing a printer. Thus, despite the increase in printer sales, the Ink Jet Division must be providing the company with much smaller than it used to.
Which of the following, if true, most seriously weakens the argument?
A. Ink-jet printers in regular use frequently need new ink cartridges, and Printwell’s printers only accept Printwell’s ink cartridges.
B. Unlike some competing companies, Printwell sells all of its printers through retailers, and these retailers’ costs account for a sizable proportion of the printers’ ultimate retail price.
C. Some printer manufacturers have been forced to reduce the sale price of their ink-jet printers even more than Printwell has.
D. In the past year, no competing manufacturer of ink-jet printers has had as great an increase in unit sales of printers as Printwell has.
E. In the past year, sales of Printwell’s ink-jet printers have increased more than sales of any other type of printer made by Printwell.
例题分析：
situation: printer的销售数量上升，但带来的销售收入没上升，因为竞争激烈，printer降价。
reason: Printwell没办法使生产printer的成本下降
conclusion: 尽管printer销售数量上升，Ink Jet Division给整个公司带来的收入会比收前少。
weaken: printer 用特殊 ink, 而这种 ink 只能 printwell 有。
(强调虽然printer无法使收入增加，但有与其相关的其他项目比使收入增加)
(详情请看 GMAT逻辑例题分析 )
GMAT逻辑削弱题的解法和内容有很多，小编在介绍这些内容的时候都会为大家举出相应的例题。参考相应的例题能够帮助大家加深理解。
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