by+doing or by +n.

kelebonnie

我在prep语法上看到的解释有时候是说 by doing 优于by n ，有的时候又说by +n 优于by doing 所以很疑惑 。以下两道是prep上找的题
177

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
选A  解释：“
imitating and practicing不如imitation和practice语义相符及简洁”

以下是从另一题的解析中截下的，具体是哪一题我不记得了
为了表达“通过作某事，使得…”这一意思，只有by doing才是正确的表达方法。其他方式如：by后面直接加名词或名词性结构，不能表达出句子想要表达的意思。通过利用从句，掩埋句子关键，使句子没有表达出事宜，是GMAT的常见错误之一。

超级无敌萍

v>adj>n>doing.有动词就一般不要用名词了

kelebonnie

v>adj>n>doing.有动词就一般不要用名词了

-- by 会员 超级无敌萍 (2011/11/26 23:16:36)

那为什么177题A选项会那样解释呢