1.代词指代错误：代词的性、数、格。比较特别考点是one 和you 不能相互指代。

例：Even with(A) a calculator, you must have a basic understanding(B)of mathematics if one expects(C) to solve complex problems correctly. No error(E)

分析：本题第一个代词是you,所以C错，应改为you expect。因为one和you 不能互相指代

2.主谓一致错误：常见错误类型，比较简单送分题。

例：The bright (A)fiberglass sculptures of Luis Jimenez has received (B)critical acclaim not only (C) in his home state, New Mexico, but also in (D)New York.

分析：本题显然主语sculptures是个复数而谓语动词has是个单数，所以主谓不一致，应该把B 改为have received

3.平行并列题型

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

分析：B enters a password 前面出现了可爱的and，这个词决定了前后必须是平行并列，要求形式对称、概念对等、功能相同。所以前面也应该有第三人称单数动词+名词的结构和 enters a password并列，而前面出现的是her initials所以正确改法：去掉enters，这种考题在国内高考也经常考，这个考点因为出题频率特别的高。

4.词性混用题型

例：Although(A) the new device was the most clever (B) designed bird feeder that Ms.Rodriguez had ever owned (C), it could not keep squirrels from(D)stealing the birdseed. No error(E)

分析：正确答案是B，修饰动词designed 的用adv.cleverly

5.倒装题型

例： Air pollution caused by industrial fumes has been studied(A) for years, but(B) only recently has(C) the harmful effects of noise pollution become (D)known. No error(E)

分析：正确答案是C，本题考查的是倒装因为only +状语/状从要求引起倒装，而倒装后真的主语是 effects所以C应改为have

6.比较题型

Just how(A) critical an improved balance of trade is to(B) a healthy economy has never been (C)more clearer(D) than it is now. No error(E)

分析：本题考点很简单C more clearer应改为clearer

7.时态题型：重点考查主从句时态协调，重点考查的时态为常见时态

8.句子结构题-非谓语动词，从句等题型

9.固定搭配题型：

请考生认真备好下列搭配：preoccupation with，take advantage of，make use of，contrast with，be involved in，think about，use sth to do，threaten to do，take pride in , result in/from，prefer to protest/ against，inconsistent with，manage to do，listen to，neither nor，either or，be more likely to do 等短语，这些短语都是在考试过程中高频出现的短语。

以上就是常见SAT语法句子改错题错误的总结。总之，这种题型最为简单，考生只需认真看清楚世诺留学上边列出的题型分类，就可以轻松面对。

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