第二法宝:划线部分有无代词， 如果有80%都是错的.找其指代注意划线与未划线部分的协调.

　　The only way for growers to salvage frozen citrus is to process them quickly into juice concentrate before they rot when warmer weather returns.

　　A. to process them quickly into juice concentrate before they rot when warmer weather returns.

　　B if they are quickly processed into juice concentrate before warmer weather returns to rot them

　　C for them to be processed quickly into juice concentrate before the fruit rots when warmer weather returns

　　D if the fruit is quickly processed into juice concentrate before they rot when warmer weather returns.

　　E to have it quickly processed into juice concentrate before warmer weather returns and rots the fruit.

　　此题考点有两个1) 代词指代错 物质名词为单数处理 citrus 2) the only way is to do 固定用法，所以答案为 E

　　第三法宝: 平行结构有无的判断.在GMAT 考试中平行结构是出错较高的语法点之一， 注意下列几点：

　　1 形式对称

　　1) 连接词的正确使用 and /or/ but yet / both and / not only but also/ either or/not but rather than ，not X but (rather) Y ，more X than Y, the same to X as to Y ,

　　2)常用的并列形式:

　　A)语法上对称，如to do is to do..;

　　B)定语从句并列必须承前使用相同的代词

　　C) 宾语从句并列 overestimate that and underestimate that

　　D)过去分词可以与现在分词并列 what 从句可以与名词并列

　　2 概念对等

　　A) 抽象名词不能对具体名词 slowing growth or damaging forest

　　B)动作名词不能对纯名词 assignment or staff

　　C).整体名词不能对个体概念 no money or staff members

　　D).泛指不能对特指 less lending and the increased pressure

　　3.功能相同

　　定语从句不能与状语从句并列, WHAT 从句不能与HOW 从句并列

　　4.连接词所连接的对象不要引起争议如有争议则通过补出介词来解决

　　suspect the police of having taped their conversation and of using

　　总结：

　　1.见到谓语看主语，主谓一致看状语

　　2.见到代词找指代，指代通常不合理

　　3.见到平行看结构，形式功能要对称