以下内容摘自prep08:
V-ing结构在句子中可以做定语，状语。
1) 放在句子末尾时（逗号隔开），如果前面是主谓宾结构，如果同时时态上与主句搭配合理，V-ing结构作状语，作为：
** 伴随动作，表与主句动词同时发生的动作
** 伴随结果，表主句动作带来的结果。
此时注意其逻辑主语的判断：其所修饰分句的动作发出者
帖一道相关题
Neuroscientists, having amassed a wealth of knowledge over the past twenty years about the brain and its development from birth to adulthood, are now drawing solid conclusions about how the human brain grows and how babies acquire language.
（E）E. Neuroscientists have amassed, over the past twenty years, a wealth of knowledge about the brain and its development from birth to adulthood,
关于E Elory解释：（暂时考试ving在句尾的问题，不考虑其他错误）haveamassed 这个动作发生在 over thepast twenty years ,are drawing 发生在now ,出现了时间断层，不可能一个是另一个的伴随；谓语是完成时态，那么既然已经完成了，drawing就无法再做其的伴随，所以只剩下做定语的功能，作adulthood的定语
利用时间断层解释，个人认为很好理解。
prep的解释：
drawing并不是have amassed的直接结果，所以不能以现在分词短语伴随修饰
OG的解释：The final descriptor in present tense, now drawing conclusions … does not fit the opening clause, which is in present-perfect tense (have amassed a wealth …) and seems to modify adulthood.
LZ认为这三个解释本质的没有区别的，LZ也能理解这三个解释。但当我做到下面这道题目是，就出问题了
GWD1-Q29 Faulty voting equipment, confusing ballots, voter error, and problems at polling places have been cited by a new study of the 2000 United States presidential election, which estimated that they did not count 4 million to 6 million of the 100 million votes cast.
正确答案B Citing faulty voting equipment, confusing ballots, voter error, and problems at polling places, a new study of the 2000 United States presidential election has estimated that 4 million to 6 million of the 100 million votes cast were not counted.
这里citing 在句首，按我的理解，应该也是做伴随动作，但是 citing 和has estimated 应该不是同时发生的（我认为是先cite 在estimate， 而况 estimate用的是完成时呢。）
想请问各位，是不是 v-ing在句首和句尾 有所不同（比如说 在句首，就不一定要强调同时发生。）
LZ水平比较差，请各位见谅啊。
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发表于 2013-4-25 08:42:11
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