二、 解释说明(拓展影响)法
中心论点表达一般比较空泛、笼统，作为论证，首先就要对空泛的意思加以具体地解释，说明原因，解释过程，阐述影响，这是一种惯用的思维，这里打不开，后面说得再多也可能都是白搭。常结合定语从句，分词的语法应用。我们来看一个例子：
By travelling abroad, we have the opportunity to experience different customs, cultures and lifestyles, helping us better understand the whole world.
这个句子是对论点出国旅游有助于我们开拓眼界的论证，采取的就是解释的方式，目的就是协助论点表达得更透彻。
三、 因果推理法
这种方法是基于一个事实的陈述，推出它可能会产生的结果，然后一环扣着一环往下推，直至目标内容出现，也就是论点的内容呈现了。常结合因果关系的状语从句结构展开论证，要注意推理逻辑连接词的应用，如as, since, because, therefore, hence, thus, as a consequence, consequently, ……
论证高中生毕业后先去工作再上大学的这种作为会带来的不利影响之一——这种方式容易使高中生误入歧途，论证过程如下：Since high school students are mentally immature, they are less likely to resist the temptation in the real world. As a result, they are more prone to some social evils, such as theft, drug abuse, and so on. So, they may easily go astray and even commit crime.
四、 对照对比论证法
拿相同或相反的事物做比较，相同关系叫对照(comparison)，相反关系叫对比(contrast)。此类论证考生需要重点掌握一些对比对照关系的连词：in contrast, by contrast, on the contrary, while, whereas, likewise, similarly, by the same token。
先看个例子，如：论证广告给消费者提供及时信息，帮助他们做决定中论述到：By contrast, without advertising, a consumer is at the risk of purchasing a product that fails to meet all of his or her needs, because of lack of knowledge of better alternatives in the market.这就是从反面着手，阐述如果没有广告，消费者会受到的影响，用反方的劣势达到衬托正方优势的效果。若想使论点具有说服力，可以尝试寻找对应的参照物相比较，在所选参照物明显的不足面前，本来事物的优点会立刻容易被人信服。
再来分析下对照的例子：They cite that in the sports world, records are always created when a sportsman is facing tough competitions. They believe that, by the same token, in a classroom where clever minds meet, students can achieve their best due to peer pressure. 拿体育比赛中的情况作对照，突出分班教学的必要性。