下面是两道SAT语法真题改进句子练习题，都涉及到了逻辑主语方面的知识点。大家可以在SAT语法书中看到这些SAT语法考点。SAT语法改进句子题型是SAT语法考试三种题型中对考生的知识掌握要求的比较全面的一个，下面我们一起来看看SAT语法真题中改进句子题讲解。
1. Lacking good instruction, my mistakes in creating a graph to illustrate historical trends were numerous.
(A) my mistakes in creating a graph to illustrate historical trends were numerous
(B) I made numerous mistakes in creating a graph to illustrate historical trends
(C) there were numerous mistakes in the graph I created to illustrate historical trends
(D) I created a graph to illustrate historical trends with numerous mistakes
(E) The graph I made for illustrating historical trends had numerous mistakes
在这道SAT语法改进句子练习题中，现在分词lacking的逻辑主语，即整个句子的主语应该是“I”，而实际上却是“my mistakes”。修改时只需要将句子的主语改为“I”就可以了。符合这个要求的有(B)与(D)两个选项，其中(D)选项将numerous mistakes放错了位置，使得整个句子意思荒谬。因此(B)为正确答案。这也告诉考生，正确答案只要改正原句的主要错误就可以了，而无须做太多额外的修改，因为与原句相比，这么做将使改后的句子变得面目全非。
以上就是SAT语法真题中改进句子题讲解，也建议大家参考SAT语法书来复习SAT语法考点，最后小编预祝大家都能取得好成绩。
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