平行结构

　　(1)名词，名词，and 名词

　　例：Each time Caroline turns on her computer , she has (A) to enter a company code, then her initials, and then enters a password (B) before (C) she can begin working (D). No error (E). (P166.2)

　　例：Of the hundreds of warm-water coral species, only a few (A) are highly prized (B) for use in jewelry because of their (C) beauty, luster, and they are hard (D). No error (E). (P533.12)

　　(2)两者之间的平行

　　如：not only…,but also…

　　neither…,nor…

　　either…,or…

　　…and/but….

　　例：The labor union is negotiating (A) a contract with the hospital that (B) will satisfy (C) the demands of the workers and be acceptable to (D) all levels of management. No error (E). (P601.13)

　　(3)句子的平行

　　考点：同类比较

　　特点：-er, more, than, as, like, unlike, compare to/with.

　　如： The population of China is larger than that of America.

　　所有格和所有格之间比较时，第二个所有格是不能省略的，需要补充that of/those of/’s。

　　从上面的例子中我们就可以看到，词汇，句子及短语之间都有平行结构出现，而且出现的规律是很好把握的。所以大家通过对相关SAT改错题知识点的总结就可以有更多的发现，继而在解答SAT改错题的时候更加有把握了。

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