olivia瓜瓜 发表于 2013-9-10 09:56
还有关于D选项的prep语法笔记给的解释,不太明白那个some之前无逗号后变成限定性修饰如何改变其逻辑意思 ...
限制性修饰和非限制性修饰的区别,最主要就是看“逗号”是否存在。去掉“逗号”则是非限制性修饰。至于其意思的变化,我在manhattan上面找到的解释:
an "essential" modifier (which is NOT set off by commas) is a modifier that actually narrows or specifies the noun/action to which it's attached.
for instance:
our top student whose score fell below 50 received a consolation prize.
--> this doesn't refer to the top student among all of our students; this only refers to the top student among those whose scores fell below 50 points. therefore, we need the essential modifier (no commas) to narrow "our students" to "students whose score fell below 50".
a "nonessential" modifier (which IS set off by commas) is a modifier that does not narrow or specify the nouns/action to any greater degree than does the rest of the sentence; it merely provides more information about that noun/action.
for instance:
our top student, whose score fell below 50, received a consolation prize.
--> here, we are actually talking about our top student. the meaning of the sentence is that all of our students' scores were below 50, but at least our top student received a consolation prize. |