OG-194老题新论——ETS之不能自愿其说之谜。（求教版主）

alohabrian

Presenters at the seminar, one who is blind, will demonstrate adaptive
equipment that allows visually impaired people to use computers.
(A) one who
(B) one of them who
(C) and one of them who
(D) one of whom
(E) one of which

The subject, presenters, must be followed by a limiting appositive _ such as one of whom, that identifies an
individual from among a larger group. Choice D is best: one of whom best serves an appositive to the subject,
presenters, because the phrase means "one from among several or many." Choice A, one who, is
unacceptable because one who cannot refer to the plural presenters. Choices B and C are ungrammatical
because who competes with one as the subject of is. Choice E employs which, a relative pronoun that does not
refer to people (presenters), but only to things.

这一题选D，但是我对红字部分，非常费解。
1、这里ETS说 我们需要一个 appositive。但是one of whom结构怎么可以被看成是appsotive，如果是appositive，这里whom的语法功能怎么解释？one of whom分明是定语从句结构。

2、
ETS说，这里需要 限制性修饰结构，但问题是：以”逗号“开始的结构，语法上不管怎么样都不能被看成是restrictive
modifier,必须被看成non-restrictive才对啊。不管是A还是D, 没有一个符合limiting
的定义。ETS凭什么说它们是限制性。   当然从句子含义的角度讲，必须要加一个限制性修饰结构，但没有一个符合条件。

综上所述，我认为ETS在这里的解释有点莫名奇妙。并且没有一个是标准答案。想听听大家的想法。

[此贴子已经被作者于2009-2-22 15:35:02编辑过]

aeoluseros

所谓的定语从句，同位语都是人为做的一个定义，而语法定义之间存在交叉是很常见的一个现象，你可以把它看做appositive，也可以看做特殊的attributive clause。OG这里说many of whom成分我认为是non-restrictive appositive，去掉one of whom is blind，大家还是知道presenters是at the seminar的那一堆presenters，不需要再有限定性修饰成分。或许措辞错误，或许对于limiting的定义不同，毕竟以往都是以(non-)restrictive来定义，而不是用limiting来定义的，后者的可能性大一些。

alohabrian

恩，那版主大人，这里的one of whom是被看成 non-restrictive limiting appositive对吗？

但是我是觉得奇怪啊，就是 one of whom是特殊的同位语结构？而不被看成定语从句？那么one of which也是同位语吗？

aeoluseros

one of whom也可以被看做定语从句，也可以看做同位语从句，one of which也是.

one of whom是被看成 non-restrictive limiting appositive

是的！