老prep2-75 没开过贴，有个疑问~

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 for it to be effective, or

were

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

这题虽然经过对比排除选对了答案是A，但有个疑问，像having done这样的结构可以这样用作伴随吗？谢谢

引用aeoluseros斑斑的解释

是指having done/having been done结构可以做名词的...

而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.这句话里面我觉得后面都有for example了，那应该是列举，那么列举的不管是事件还是事物，都应该是名词成分...

啊

可以做名词吗？

不好意思呀 我也灰常纠结这个名词

http://forum.chasedream.com/dispbbs.asp?boardID=23&ID=410346&page=1

我们在里面又讨论得 你看看吧 或许理解下

对了从第2页最后开始讨论这个题的。。

谢谢你呀

呵呵

又是J帮助了我

同意是举例，但是为什么把for example放在having的后面做插入语呢，这个位置很怪啊，为什么不用顺顺的for example, having... or having...呢？哪位同学帮忙解答一下？