GMAT语法形合题型解题方法
(1)来自Prep08
Whereas the honeybee’s stinger is heavily barbed and cannot be retracted from the skin, because the yellow jacket has a comparatively smooth stinger, it is therefore able to be pulled out and used again.
A. because the yellow jacket has a comparatively smooth stinger, it is therefore able to be pulled out and used
B. the comparative smoothness of the yellow jacket’s stinger allows them to pull it out and then can therefore use it
C. the yellow jacket’s stinger is comparatively smooth, and can therefore be pulled out and used
D. in comparison, the yellow jacket’s stinger is smooth, and thus able to be pulled out and used
E. in comparison, the yellow jacket has a smooth stinger, thus allowing it to be pulled out and used
此题易看出whereas构成了前后2句的对比关系，一般考生都能借此确定比较对象是stinger，而排除之后剩下CD，在CD的抉择中，精妙之处在于C的写法之中conparatively与前半句的heavily的对称，仿佛有对偶之感。在该题目中设置这处小提示绝非无意，实际上在大量PREP08题目中都有这个现象，即不显眼的“小对称”，使得句子更宛若天成。
(2)来自PREP08
The organic food industry has organized a successful grassroots campaign—using Web sites, public meetings, and also mass mailings—that have convinced the Department of Agriculture to change the proposed federal regulations for organically grown food.
A. using Web sites, public meetings, and also mass mailings—that have convinced
B. using Web sites, public meetings, and mass mailings—that has convinced
C. by using Web sites, public meetings, and mass mailings—in convincing
D. by the use of Web sites, public meetings, as well as mass mailings—that convinced
E. which used Web sites, public meetings, and mass mailings—in convincing
此题是意合的又一经典。其线索在于划线外successful一词，暗示了划线内时态的完成态，构成了美丽的“意合”。再由主谓一致可直接确定B答案。在GWD中，还有划线外动词使用predict、propose等，暗示划线内使用将来时态的例子。说明命题者绝非偶尔为之。
(3)来自PREP08
In her 26 years in the forests of Gombe, Jane Goodall collected data that proved that chimpanzees exhibit the kind of curiosity so that new patterns of behavior and expression can be passed on from each one to others by imitating and practicing
A. exhibit the kind of curiosity so that new patterns of behavior and expression can be passed on from each one to others by imitating and practicing
B. will exhibit the kind of curiosity so that new patterns of behavior and expression can be passed on from one to another by imitating and practicing
C. will exhibit the kind of curiosity so that new patterns of behavior and expression can be passed on from one to another by imitation and practice
D. exhibit the kind of curiosity by which new patterns of behavior and expression can be passed on from one to another by imitation and practice
E. exhibit the kind of curiosity where new patterns of behavior and expression are passed on to others by imitation and practice
