请教PREP 154

niswzzhn

154.       (33193-!-item-!-188;#058&006626)

 

Some patients who do not respond to therapies for depression may simply have received inadequate treatment, having, for example, been prescribed a drug at a dosage too low to be effective or having been taken off a drug too soon.

 

(A) having, for example, been prescribed a drug at a dosage too low to be effective or having been

(B) having, for example, a drug prescription that was ineffective because the dosage was too low, or being

(C) as, for example, having too low of a dosage of a prescribed drug for it to be effective, or being

(D) when they have, for example, been prescribed too low a drug dosage to be effective, or were

(E) for example, when they have a drug prescription with a dosage too low to be effective, or been

这道题目答案是A，我想问一下这里A选项的having的这个结构，记得现在完成时结构不能做定语修饰，这里是什么成份啊？谢谢大家。

niswzzhn

顶啊。

Pinpinpink

就我个人理解，这里having不是拿来做定语的，如果having是定语，那么for example就没有下文了，也就是说如果是定语那么要for example干嘛？

这里having的这个结构可以被看作单纯的两个名词结构，作为for example的内容！

说它们是inadequate treatment的同位语好像也不恰当！

呵呵，只有等高手来了！

niswzzhn

谢谢解答啊！我觉得有道理，还有人能来解释一下吗？谢谢啦。

Icanw

同意3楼的看法. 两个having.. 是动名词结构， 举例说明inadequate treatment, 但不是同位语。

yexiang2007

我觉得这里不是作定语，是做原因状语，这句话前面说了一个结果，或者说一个现象，后面说明了造成这种结果的原因。

Icanw

这里没有原因状语的引导词啊...

lisy

ding

云上的日子bj

同问此题。。。

JorieSong

以下是引用Icanw在2007-10-26 8:16:00的发言：
同意3楼的看法. 两个having.. 是动名词结构， 举例说明inadequate treatment, 但不是同位语。

原来如此。因为 for example 的缘故，两个having...是动名词，做举例子的内容。谢谢！明白了。