一. Exemplification(举例说明)
A good case in point is that...
举例子的目的是把抽象的概念表达清楚
二 .Analogy and contrast (类比与对比)
A is similar/analogous to B
类比的目的是用人们熟悉的东西来解释新东西
三. Explanation(解释说明)
目的也是把抽象概念说清楚,这里借用上文的举例论证的片段
四.Cause and effect (因果论证)
也就大家常用的because了
五.Concession and refutation (让步与反驳)
让步:although,admittedly公认的
反驳:however, nevertheless, but
六.Suppose(假设论证)
Suppose that...