一.句子成分残缺
句子成分残缺是指句子中缺少成分，在SAT语法中常见的就是缺少连接词，也就是两个独立的句子中间没有连接词，通常也叫run-on句型。
1. As a choreographer, Judith Jamsion has enriched the world of dance, she uses as her work's inspiration African American culture.
(A) Jamison has enriched the world of dance, she uses as her work's inspiration
(B) Jamison has enriched the world of dance with works inspired by
(C) Jamison, who has enriched the world of dance by works whose inspirations are
(D) Jamison, enriching the world of dance, with works inspired by
句意：作为一个编舞者，Judith Jamsion 把美国黑人的文化当做自己的创作灵感来丰富舞蹈世界。
解析：B,选项A是run-on句型错误，B和C缺少动词，然后就看后面定语。修饰works 的定语。一个用过去分词inspired by sth。一个用定语从句that had the inspiration of，显然第一个更加简洁。
考点：这里考点run-on句型是指两个完整的句子中间没有连接词只用逗号隔开，是SAT中常出现的考点。
二.时态错误
SAT语法中的时态考察也是非常频繁的一个考点，虽然是很简单但也常常被考生忽视。
16. One subject of(A) Felipe Alfau's second novel, published more than(B) 40 years after it has been(C) written(D), is the illusory nature of the passage of time. No error(E)
句意：费利佩的第二部小说在她写完40多年后出版，是以时间流失的虚幻本质为主题。
解析：C，这里的现在完成时太使用错误，has been done是表示一个持续的动作，应该为it was written.
考点：时态的考察
三.指代错误
指代错误是通常是句子中有they，it等代词指代前面的名词时指代不清楚，考生遇到代词的时候一定要小心，通常这里会出现错误。
28. Neither Ms. Perez nor(A) Ms. Tanaka believes(B) that watching as much television as her(C) son Sam does will lead(D)to anything productive. No error(E)
句意：Ms. Perez 和Ms. Tanaka都不赞同像她儿子那样看电视终将会一事无成。
解析：C，这里her指代不明是Ms. Perez 还是Ms. Tanaka。
考点：指代错误。
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