例题：Although Gutman admits that forced separation by sale was frequent，he shows that the slaves’ preference，revealed most clearly on plantations where sale was infrequent，was very much for stable monogamy.
难句类型：插入语
译文：虽然古特曼承认，由于奴隶买卖而造成的被迫离散甚为频繁，但他还是证明，奴隶的偏爱——在那些奴隶买卖并不频繁的种植园上被最为显著地揭示出来——在很大程度上侧重于稳定的一夫一妻制(monogamy)。
解释：在这个SAT阅读长难句中，插入语的使用revealed most clearly on plantations where sale was infrequent, 后半个分句中的主语that slaves' preference与系动词was离得太远，造成阅读的困难。
意群训练：Although Gutman admits / that forced separation/ by sale was frequent，/he shows that the slaves’ preference，/revealed most clearly/ on plantations /where sale was infrequent，/was very much for stable monogamy.
以上的SAT阅读长难句相对来讲是一个比较简单的句子，所以从上面的理解和分析的过程中，大家就可以看到自己理解SAT阅读长难句的水平是不是需要从基础开始，如果有需要，一定要更加关注基础，关注基本的句子结构。