我们看一道题来说明从几个都是错误的选项中来找出一个相对正确答案的应用。

The modernization program for the steel mill will cost approximately 51 million dollars， which it is hoped can be completed in the late 1980‘s.

（A） The modernization program for the steel mill will cost approximately 51 million dollars， which it is hoped can
be completed in the late 1980’s.

（B） The modernization program for the steel mill， hopefully completed in the late 1980‘s， will cost approximately 51 million dollars.

（C） Modernizing the steel mill， hopefully to be completed in the late 1980’s， will cost approximately 51 million dollars.

（D） The program for modernizing the steel mill， which can， it is hoped， be completed in the late 1980‘s and cost approximately 51 million dollars.

（E） Modernizing the steel mill， a program that can， it is hoped， be completed in the late 1980’s， will cost approximately 51 million dollars.

这道题目中A选项的it is hoped是个插入语，应该前后用两个逗号隔开。而且A中的which语法上看指代了dollar美圆，而从逻辑来分析其实是应该指代program项目的，所以A错了。B选项和C选项用了hopefully这个词，这不符合商业英文的用法，一般是错误的，应该改为it is hoped。D选项犯了个非常严重的语法错误，它缺少谓语，所以肯定是错误选项。最后答案选E，而其实E选项也只是个相对最佳而非绝对最优，因为它放了Modernizing the steel mill这个分词结构做主语，应该把它改成the modernization of the steel mill名词形式来做主语会更好一点，但由于这只是个不简洁的错误，属于有效性的错误，与A，B，C，D的错误性质比较起来显得轻微许多，所以答案选E。

   只要掌握了一定技巧，加上平日基础的积累，GMAT语法题难题其实并不可怕，做题时首先要先摸清它们的主干，顺藤摸瓜，就能找到GMAT语法题难题的考查核心了。