标题: nonessential modifier求解 [打印本页] 作者: maerchen 时间: 2018-8-10 11:48 标题: nonessential modifier求解 mamhattan 6th chapter 4 problem set上：People, who talk loudly on their cell phones in crowded trains, show little respect for oth-
er passengers. who talk...crowded trains: INCORRECT. This clause is wrong because the commas that en-close it make it a nonessential clause. The logic of the sentence calls for an essen-tial clause, because the rest of the sentence would change its meaning without theinformation in the relative clause. (The sentence People show little respectfor otherpassengers makes a sweeping claim about every human being.) To correct this er-ror, remove the commas.
你看下你提到的这个例子
People, who talk loudly on their cell phones in crowded trains, show little respect for other passengers.
这个句子who的定语从句就是非限定性定语从句，你把它去掉之后，people就变成了所有的人，就是所有的人对其他的乘客都不尊重。
作者: westminster 时间: 2018-8-22 14:32
限定性和非限定性定语从句是看是否分类，还是在解释说明。
Snakes that are reptiles are quite. (属于爬行动物的snakes是安静的。）
Snakes, which are reptiles, are quite. （snakes是爬行动物，它们是安静的。）
所以，不是单纯的非限定性定语从句可有可无。限定性从名的功能是缩小。