GRE写作的这些论证方法

 　　一、演绎推理论证法

　　将一个具体的事例运用到一个一般性原则从而得出结论。

　　论点:Demand for this product wii go up。

　　论据:The price of the product is sliding.

　　推理依据:Whenever prices of a product go down , demand for it rises.

　　(说明:由论据“the price of the product is sliding ”推出论点“Demand for this product will go up”,这个过程是否有效取决于推理依据“whenever prices of a product go down , demand for it rises”是否成立。下面每一种论证方法都是如此)二、定义法

　　界定一个概念的关键内涵;或者认定某个事物符合某个定义，从而得出结论。例如:

　　论点:Radical¹ feminists² are not good citizens.

　　论据:Radical feminists lack family values.

　　推理依据:Family values characterize the good citizes.

　　三、因果关系论证法

　　将一个判断放入一个因果关系中，指出它或者是原因，或者是结果。例如:

　　论点:The internet may be causing depression.

　　论据:When a group of people increased their use of the Internet , they felt depressed³.

　　推理依据:There are no other reasons for the group's depression.

　　四、归纳推理论证法

　　从若干个具体事例中推出共性的一般结论。如:

　　论点:Everyone likes the movie.

　　论据:I know three people who like the movie.

　　推理依据:Three eaxmples are enough.

　　五、列举特征式论证法

　　指出某事物发生或者生存的征候或者迹象。例如:

　　论点:The child has chickenpox.

　　论据:The child has red spots.

　　推理依据:These spots are signs of chickenpox.

　　六、类比论证法

　　用我们已知的、熟悉的事物同未知的。不熟悉的事物加以比较，并用前者的情况解释者 的情况。分为三种:纵向类比(过去的事物同现在的、同一类事物的类比)、横向类比(同一 时期、同一事物之间的类比)、比喻式类比(不同类别事物之间的类比)。例如:

　　1.纵向类比(Historical analogy)

　　论点:Many people will die of SARS.

　　论据:Many people died of the Black Death.

　　推理依据:SARS and Black Death are similar.

　　2.横向类比(Literal analogy)

　　论点:China should have its fighter carriers.

　　论据:A neighboring country has a powerful carrier fleet.

　　推理依据:The two countries are similar enough to draw such a comparison.

　　3.比喻式类比(Metaphorical analogy)

　　论点:Reading a difficult book should take time.

　　论据:Digesting a large metal takes time.

　　推理依据:Reading and eating are sufficiently⁴ alike to be compared.

　　七、引用权威论证法

　　引用公认的权威，或者论证自己就是权威从而对自己的观点加以论证。例如:

　　论点:China's economy will grow 8 poercent this year.

　　论据:Professors and scientists say so.

　　推理依据:These experts are reliable.

　　八、诉诸尝试法

　　利用人们的常识【包括:普遍的价值观念、人的普遍动机、生活常识】进行论证。例如:

　　1.诉诸普遍性的价值观念。

　　论点:The university curriculum should be multicultural⁵.

　　论据:A multicultural curriculum will contribute to equality and acceptance.

　　推理依据:You value equality and acceptance.

　　2.诉诸普遍动机

　　论点:You should support this candidate premier⁶.

　　论据:The candidate can help you get job security and safe neighbourhoods.

　　推理依据:You want job security and safe neighbourhoods.

　　3.诉诸生活常识

　　论点:She was very kind to me.

　　论据:She treated me with the best tea she had.

　　推理依据:A treatment with the best tea is an expression of kindness.

　　九、反证法

　　假设一个观点是正确的，然后却推导出荒谬的结论。例如:

　　论点:An industrious⁷ man must also be thrifty⁸.

　　论据:With only industry but without thrift⁹ ，the person will end uo bankrupt.

　　推理依据:An industrious person ending up bankrupt sounds absurd.

　　十、统计数据论证法

　　提供数据，以资论证。例如:

　　论点:We should end the current poverty-relief program.

　　论据:It costs $45 million per year.

　　推理依据:This is too much;it proves we should end it.

　　只是一个详细的结构上的分析说明，在具体运用时，我们经常讲推理依据和论据放在了一起，但只要合理即可。论据可以自己编造，也可以是大众的例子，关键在于自己怎么样建立论点和论据之间的桥梁。上面的这些技巧，可能我们只用到某种或某几种，但我们必须得会至少一种。

 

1 radical   

n.激进份子，原子团，根号；adj.根本的，激进的，彻底的

参考例句：

• The patient got a radical cure in the hospital.病人在医院得到了根治。
• She is radical in her demands.她的要求十分偏激。

2 feminists   

n.男女平等主义者，女权扩张论者( feminist的名词复数 )

参考例句：

• Only 16 percent of young women in a 1990 survey considered themselves feminists. 在1990年的一项调查中，只有16%的年轻女性认为自己是女权主义者。 来自辞典例句
• The organization had many enemies, most notably among feminists. 这个组织有许多敌人，特别是在男女平等主义者中。 来自辞典例句

3 depressed   

adj.沮丧的，抑郁的，不景气的，萧条的

参考例句：

• When he was depressed,he felt utterly divorced from reality.他心情沮丧时就感到完全脱离了现实。
• His mother was depressed by the sad news.这个坏消息使他的母亲意志消沉。

4 sufficiently   

adv.足够地，充分地

参考例句：

• It turned out he had not insured the house sufficiently.原来他没有给房屋投足保险。
• The new policy was sufficiently elastic to accommodate both views.新政策充分灵活地适用两种观点。

5 multicultural   

adj.融合多种文化的，多种文化的

参考例句：

• Children growing up in a multicultural society.在多元文化社会中长大的孩子们。
• The school has been attempting to bring a multicultural perspective to its curriculum.这所学校已经在尝试将一种多元文化视角引入其课程。

6 premier   

adj.首要的；n.总理，首相

参考例句：

• The Irish Premier is paying an official visit to Britain.爱尔兰总理正在对英国进行正式访问。
• He requested that the premier grant him an internview.他要求那位总理接见他一次。

7 industrious   

adj.勤劳的，刻苦的，奋发的

参考例句：

• If the tiller is industrious,the farmland is productive.人勤地不懒。
• She was an industrious and willing worker.她是个勤劳肯干的员工。

8 thrifty   

adj.节俭的；兴旺的；健壮的

参考例句：

• Except for smoking and drinking,he is a thrifty man.除了抽烟、喝酒，他是个生活节俭的人。
• She was a thrifty woman and managed to put aside some money every month.她是个很会持家的妇女，每月都设法存些钱。

9 thrift   

adj.节约，节俭；n.节俭，节约

参考例句：

• He has the virtues of thrift and hard work.他具备节俭和勤奋的美德。
• His thrift and industry speak well for his future.他的节俭和勤勉预示着他美好的未来。