如果发现一个选项有意省略‘to’或被动词时，则很有可能是正确答案对称结构的常考连词：but……or  

either…or…not only…but also…(also有时省略)  

neither…nor…not…but…(优选结构)  

from…to……as well as… 

as…as……rather than…(如果前面有不定式的话，后面不定式往往被省略)  

VII.虽然违反了Effectiveness有效性原则，但ETS把它当成Correctness来处理(lvi)违反了"忠实原文的意思" 

a)极端性修饰词的位置改变了: first, last, typical, typically, only you, you only;  

b)强烈语气表达要保持，如： 

I don’t know any…… 

Not unlike = like it very much  

Whatever = no matter what… 

Whenever = no matter when  

c)句子的强调重心发生改变一定错！ 

d)把倒装句变成正常语序一定错！ 

(lvii)简洁原则：语义重复(lviii)一定错！注意(rise, raise, grow, roaring, increase的使用而(lix)使语义重复(lx)的情况)  

from…to…当中不能加up or down  

opposition = againstorbit = aroundannually = a year  

by the name of = be known aswith = include  

EFFECTIVENESS  

II.忠实原文的意思，除非从逻辑上发现原文意思一定要修改 

(i)弱语气词的添加、丢失或位置发生改变(如just, even)，(ii)但不(iii)一定错 

(iv)句子的强调重心发生了微弱改变，(v)但选项不(vi)一定错(如in 1980)  

(vii)时态发生变化(GMAT中一般时态不(viii)能随意改变，(ix)除非有个明确的点提示原文时态应当发生改变)  

III.简洁原则 

-实意名-词>动词>形容词>抽象名-词>分词动名-词>从句-存在该种错误，-并不-一定错，-看是不-是两个选项中唯一的区别，-如support > be supportive of -半抽象名-词，-即动词和名-词形式一样的名-词，-如result, help, cost, increase, bare优选动词词性的选项-分词优于定语从句，-因为过去分词是定语从句的省略形式, that is indicated = indicated  

CORRECTNESS  

I.宾语从句和定语从句 

-that, which只能指-物 

-who, whom只能指-人 

-whose指-人或物 

-宾语从句一定要有that; -定语从句用that和which有区别:  

that限制性，紧跟被修饰名词后；which引导非限制性定语从句，前面必须是","或介词 

II.even though, although > despite, in spite of  
       not…but…> …rather than…, instead of  

B +介词+ A结构> AB结构，如 Inability of French > French inability  

形容词名词结构> 名词that is  

同位语从句> 定语从句 

III.GMAT中一定错的表达方式 

-口语化表达：when you; if you; maybe < probably  

-主观色彩的表达方式一定错: be to do, be going to, have to  

-Similar to放在句首一定错，-无论是整句还是分句 

-Enough在画线部分一定错！ 

-Concerning一定错！要用about, over  

-Hopefully错！要用it is hoped  

-Make comparison of错！要用compare  

-With the intention to错！要用intend  

-As is based错！要用based  

-Be able to be done错！ 

-There be done错！ 

-Comparing，-basing错！只能用被动compared, based  

-Doubled, tripled, quadrupled错！只能用主动