下面
句子结构的考察一致是语法中比较重要的一个考察点，大致可以分为句子的完整性和run-on句型两种形式，虽然改革后新SAT语法有很大形式上的改变，但是旧SAT语法中的考点基本都被保留下来了，今天我们主要给大家讲解下新SAT语法中句子结构的考察。
一.句子结构考点介绍
句子结构在SAT语法中的考察形式一般分为句子完整性和run-on句型两种形式，下面来给大家详细介绍下。
1.句子完整性
句子缺少谓语或主语
用定语从句、名词等代替谓语动词
缺少主语
非谓语动词代替谓语动词
应对这种题目的解题思路如下：
1.看未划线部分有无谓语动词
2. 未划线无谓语动词，则划线部分必须有谓语动词，另外还要注意下区分动词的过去式与过去分词
3.分号连接从句，—分号前后必须是两个完整句子，不能是从句
2.run-on句型
—逗号连接两个完整的句子且没有连词 SVO, SVO句子必须要有连词或者分号连接
应对这种题目的解题思路如下：
1.看到逗号连接两个句子想到run-on
2.若逗号前后两个句子完整则为run-on句型，这种选项可以立即排除，这种方式很快捷。
二.新SAT语法样题解析
下面我们来通过样题来练习一下，看看新SAT语法中对于句子结构问题的考察，仅供参考。
[Q9] People who pursue careers in transportation planning have a wide variety of educational backgrounds. A two‑year degree in transportation technology may be sufficient for some entry‑level jobs in the field. Most jobs, however, require at least a bachelor’s degree; majors of transportation planners are [Q10] varied, including fields such as urban studies, civil engineering, geography, or transportation and logistics management. For many positions in the field, a master’s degree is required.
Question 10.
A. NO CHANGE (varied, including)
B. varied, and including
C. varied and which include
D. varied, which include
答案：A
解析：该题考查句子结构，其他选项错误在于：B中and including和前面没有平行对象;C中and which也没有平行的从句;D中which没有合适的指代对象。
下面我们再来通过老SAT语法练习一下这种题目的考察方式，
Joan feeling tired and frustrated, and she was able to finish her painting before the light faded.
A. Joan feeling tired and frustrated, and
B. Joan felt tired and frustrated,
C. Although Joan felt tired and frustrated,
D. Despite Joan felt tired and frustrated,
E. Nevertheless, Joan felt tired and frustrated,
答案：C
解析： A中and之前的句子不完整，缺少动词。B，逗号连接两个句子，错误。C，Although是连词，表转折，正确。D，Despite是介词，E，Nevertheless是副词，不能接句子。
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