下面新航道小编为大家整理出关于SAT文法知识点的相关内容，希望对大家有一定的帮助。
一、标点符号
1.含义:
句中的标点符号使用要规范。
2.类型:
(1)逗号符号

3.用法
(1)逗号与连词搭配:连词前加逗号。
例1: Tom is a hard-working student, but he gives himself a break for every two hours

解析:本句中连词but连接两个独立句，与逗号搭配。

(2)逗号与副词搭配:副词后加逗号，在句中时与双逗号搭配。

例句2: Tom is a student. Additionally, he studies SAT.

=例句3: Tom is a student. He, additionally, studies SAT
解析:副词additionally与逗号搭配，连接两个独立句，但注意两句的分隔为前面的句号。而例句3中的副词也可以放在第二句主语he后面，做插入语，但还是连接前后两句，故与例句2用法相同。
(3)逗号与插入语搭配。
① 从句:从句与双逗号搭配。
例句4: Tom, who is a student, studies SAT.
解析:who引导的定语从句修饰主语Tom，与双逗号搭配。
② 名词短语:名词短语与双逗号搭配。
例5: Tom, a handsome student, studies SAT.
解析:名词短语a handsome student修饰主语Tom，与双逗号搭配。
③ 非谓语动词:非谓语动词与双逗号搭配。
例6: Tom, passing English test, studies SAT, which is a standardized test.解析:非谓语动词passing English test修饰主语Tom，与双逗号搭配。题目检测
题目检测 1
We lost the first game of the World Cup, although everyone played well.

A. NO CHANGE
B. World Cup; although
C. World Cup. Although

D.World cup: although
解析:通过逗号和连词看出是逗号与连词搭配的考点，根据“连词前加逗号”的原则，A项逗号与连词搭配分隔主从句，而B/C/D选项的标点符号会造成不完整句的出现，所以排除B/C/D，所以选A。
题目检测 2
Peter Watson was a talented artist. He was moreover a writer of some note.

A. NO CHANGE
B. was, moreover a
C. was moreover, a
D. was ,moreover, a
解析:通过逗号和副词看出是逗号与副词搭配的考点，根据“副词后加逗号，在句中时与双逗号搭配的原则，两句中的句号分隔两句，所以第二句中的moreover是副词，连接前后两句，故应该与双逗号搭配，所以排除A/B/C，所以选D。
题目检测 3
Maria Sharapova, who is one of the most talented tennis athletes won the WTA championship

A. NO CHANGE
B. who is one of the most talented tennis athletes, won
C.,who is one of the most talented tennis athletes, won
D.,who is one of the most talented tennis athletes, won
解析:通过逗号与从句看出是逗号与插入语的考点，根据“从句与双逗号搭配”的原则，who is one ofthe most talented tennis athletes是插入语修饰主语Maria Sharapova，所以是双逗号，故排除A/B;

又根据“谓语和宾语之间不能用逗号隔开”的原则，谓语won与宾语the WTA championship之间不能用逗号分隔，所以排除D，所以选C。
题目检测 4
Compared with other countries in the past four decades, China, one of the fast growingcountries in the world achieved their goals one by one.
A. NO CHANGE

B.one of the fast growing countries in the world, achieved。.
C. one of the fast growing countries in the world, achieved

D. , one of the fast growing countries in the world, achieved
解析:通过逗号与从句看出是逗号与插入语的考点，根据“名词短语与双逗号搭配”的原则，one ofthe fast growing countries in the world是插入语修饰主语China，故排除A和C;

又根据“谓语和宾语之间不能用逗号隔开”的原则，谓语动词achieved与宾语their goals之间不能用逗号分隔，所以排除D，所以选B.
题目检测 5
China surpassing Japan as the second largest economy twelve years ago, will become thelargest economy with a decade.
A. NO CHANGE

B.,surpassing Japan as the second largest economy twelve years ago will

C.,surpassing Japan as the second largest economy twelve years ago, will

D.,surpassing Japan as the second largest economy twelve years ago, will.

解析:通过逗号与从句看出是逗号与插入语的考点，根据“非谓语动词与双逗号搭配”的原则surpassing Japan as the second largest economy twelve years ago是插入语修饰主语China，故排除A和B;又根据“非必要不分隔”的原则，助动词wil与谓语动词become之间不能用逗号分隔，所以排除D，所以选C。