语法改错为什么难，主要原因无非就是句子修饰成分过多导致大家找不到主干部分，因此也理解不了句子的大致意思。那么修饰成分都有哪些，它们具体是怎么去修饰名词和动词的，这些修饰成分之间又有什么区别?本文就把GMAT句子改错之修饰语给大家介绍下。
一、常见的修饰成分有形容词和副词
形容词只修饰名词或者代词，副词修饰除名词和代词以外的任何成分。副词通常是以-ly结尾，但是像feel这样的动词后面接形容词而不是副词，因为该形容词修饰的是名词主语而不是feel。
例：1)The smart student works quickly。
2)Amy is felling GOOD/WELL.(表语是通常用来说明主语的身份特征和状态，可用名词或者形容词，此处应该选择GOOD这个形容词，因为WELL一般是用作副词。)
3)Amy writes GOOD/WELL.(副词修饰动词，此处选择WELL)
二、GMAT考试中出现的形容词考察形式有两种
1、adj.+adj.+n.
此结构中两个形容词都修饰名词。
2、adv.+adj.+n.
此结构中副词修饰形容词，形容词修饰名词。
这两个结构的意思是不一样的，需要通过坐着的意思来选择。
例1：James Joyce is MAX`s supposedly Irish ancestor.(此句是想表达James Joyce可能是MAX的祖先，所以应该用supposedly 的形容词形式修饰ancestor)
改正：James Joyce is MAX`s supposed Irish ancestor.
例2：MAX`s grandmother is his supposed Irish ancestor.(在这个句子里，问题变成了MAX`s grandmother是不是爱尔兰人，而不是grandmother是不是MAX的ancestor，所以这里应该选择supposedly修饰Irish)
改正：MAX`s grandmother is his supposedly Irish ancestor.
三、常见的修饰语分成两种，一种是名词修饰语，一种是动词修饰语。
1、名词修饰语修饰名词或代词，相当于形容词。(本讲主要内容)
2、动词修饰语修饰动词的方式(how)时间地点和原因等(when,where，why)，相当于副词。(以后再说)
四、名词修饰语有哪些?
形容词，介词短语，过去分词，现在分词(不加逗号)，定语从句，其他名词(同位语)
Adj.Before N.The LAZY cat took a nap.
After N.The cat, LAZY from overeating, took a nap.
介词短语After N.The cat ON the couch took a nap.
介词短语Before N. On the couch ,the cat took a nap.
过去分词Before N.The TIRED cat took a nap.
TIRED from chasing mice, the cat took a nap.
After N.The cat, TIRED from chasing mice, took a nap.
现在分词
(无逗号)Before N.The SLEEPING cat took a nap.
After N.The cat SLEEPING on the rug is named “Sue”.
定语从句
(关系代词)After N.The grey cat, WHICH loves tuna, took a nap.
The cat THAT lives next door is noisy.
The person WHO lives next door is noisy.
The city WHERE I live is noisy.
Another N.
其他名词(同位语)Before N.A LOVER of mice, my cat hunts night and day.
After N.The cat, a TABBY raised on a farm, took a nap.
(modifiers of moderate length can contain others)
五、名词修饰语“就近修饰”
错误形式一：修饰语靠近另外一个名词(misplaced Modifier)
例： Jim biked along an old dirt road to get to his house,which cut through the woods.
(形式上看which指代的是house，但是意思上house不能cut ，这个句子是错误的)
改成：To get to his house, Jim biked along an old dirt road, which cut through the woods.
(道路把树林分成两半。)
错误形式二：被修饰的对象不存在(dangling)
例1：Resigned to the bad news, there was no commotion in the office.(句中没有Resigned的修饰对象，Resigned只能修饰人，所以这个句子错误)
there was no commotion in the office，resigned to the bad news.(resigned修饰的是就近的office，也不对。)
改正：Resigned to the bad news, the office workers made no commotion.
例2： Using the latest technology, the problem was identified.
( problem不能是Using的动作发出者，必须是人，所以此句子错误)
改正： Using the latest technology, the engineer identified the problem. (加一个主语)
错误形式三：两个或两个以上修饰语“堆砌修饰”
例：George Carlin, both shocking and entertaining audiences across the nation, who
also struggled publicly with drug abuse, influenced and inspired a generation of comedians.
更好: Both shocking and entertaining audiences across the nation, George Carlin, who
also struggled publicly with drug abuse, influenced and inspired a generation of
comedians. (放在N两边)
最好: Both shocking and entertaining audiences across the nation, George Carlin
influenced and inspired a generation of comedians, even as he struggled publicly
with drug abuse. (将一个改写成子句)
六、所有格形式
例： Unskilled in complex math, Bill’s score on the exam was poor. (Unskilled 修饰的是Bill而不是Bill’s score)
改正：改变句子的主语(Bill’s- Bill)
Unskilled in complex math, Bill did not score well on the exam.
七、限定性和非限定性名词修饰语
限定性表示限制，确定的意思，形式上没有逗号;
而非限定性表示补充说明的意思，形式上有逗号。
例1：The mansion PAINTED RED is owned by the Lees.(限定性修饰语，限定了就是那个被染成红色的mansion)
例2：This mansion, RECENTLY PAINTED RED, is owned by the Lees.(非限定修饰语，只是补充说明房子被涂成红色了)
例3：非限定性-WHICH(有逗号); 限定性-THAT(无逗号).
限定性: The mansion THAT HAS BEEN PAINTED RED is owned by the Lees.(修饰紧密，一定要考虑)
非限定性:This mansion, WHICH HAS BEEN RECENTLY PAINTED RED, is owned by the lees.(修饰松散，可以不考虑)
》》点击了解GMAT语法修饰对象有什么讲究
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