SAT语法句子改错题比较难，是要你看出题干中的划线部分是否有错，没有的话就选A, 有的话就从另外四个选项里面选择一个正确的成为答案。下面我们就来具体看一下SAT语法句子改错题的解题步骤。一般来说标准的解题顺序可以分为如下几步：
比如说有些句子在 TOEFL中是对的，但是在SAT语法里面就是错误的，因为它不够简洁有效。而且很多情况下SAT语法不是让你选择一个完全正确的答案，而是让你选择一个最佳答案。可能五个选项都是错误的，但你就应该从这五个选项里面选择一个错误相对来说最小的选项，它就是正确答案。所以大家在解题的时候切不可钻牛角尖，应该从最优性出发来寻找答案。可能你完全可以自己写出一个选项来比答案更能够符合题意，但是因为选项当中没有，所以我们还是应该选择一个最佳选项。
1.抓住明显错误进行排除
首先大家需要寻找划线部分是否有明显的语法错误或逻辑错误，有的话马上排除，再纵向寻找答案，把选项中没有改正这些错误的都给排除掉。
例：The benefits of exercise is as psychological as physical.
(A) is as psychological as physical (B) are more than psychological, they’re physical (C) are as much psychological as physical (D) have psychological aspects as well as the physical ones (E) is psychological in parts and physical as well
我们可以看出这道题目的主语是benefits是复数，所以谓语动词也应该用复数，但这里谓语动词是单数，所以马上把A排除掉，纵向寻找答案，发现E没有改正错误，D选项错误的换了时态，所以都错了。比较B和C选项，B选项的意思不对而且显得比较多余累赘，所以答案选C.
2. 利用常考考点作为切入点
有时大家如果把一些常考考点给记住的话，就可以大大提高解题的速度。比如在SAT语法当中，划线部分经常出现的错误就是代词指代不清和限定性从句的引导词指代混乱。因此如果划线部分出现了这两类词的话，在未发现明显错误的时候，我们就应该以这两类词为切入点，通过确认其真实指代对象和语法指代对象是否一致来排除错误选项。
例：The automobile, popularized by Henry Ford, was invented around the same time as the Wright brothers developed the airplane, and it is an important method of transportation.
(A) The automobile, popularized by Henry Ford, was invented around the same time as the Wright brothers developed the airplane, and it (B) The automobile, popularized by Henry Ford, was invented around the same time as the Wright brothers developed the airplane, and (C) Invented around the same time were the automobile, popularized by Henry Ford and the airplane, which the Wright brothers developed, and it (D) The automobile popularized by Henry Ford. Was inverted around the same time as the Wright brothers developed the airplane and this is why it (E) An invention around the same time as the Wright brothers developed the airplane, the automobile, popularized by Henry Ford, it
我们一起来分析一下这道题目，题干说由HF所推广的汽车，与W兄弟所发明的飞机差不多在同一时间，它是一种重要的交通方法。大家发现划线部分的最后一个词it就犯了模棱两可的错误，它既可以指代汽车，又可以指代飞机，所以A错，同样C, D, E也都有it，所以也不对。答案应该选择B选项，把it给去掉了，这样就避免了指代不明的错误。
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