大全910 修饰问题

yashudong · 发表于 2009-12-27 16:27:58

910. Using a Doppler ultrasound device, fetal heartbeats can be detected by the twelfth week of pregnancy.
(A) Using a Doppler ultrasound device, fetal heartbeats can be detected by the twelfth week of pregnancy.
(B) Fetal heartbeats can be detected by the twelfth week of pregnancy, using a Doppler ultrasound device.
(C) Detecting fetal heartbeats by the twelfth week of pregnancy, a physician can use a Doppler ultrasound device.
(D) By the twelfth week of pregnancy, fetal heart-beats can be detected using a Doppler ultrasound device by a physician.
(E) Using a Doppler ultrasound device, a physician can detect fetal heartbeats by the twelfth week of pregnancy.

答案选E，没有问题，OG11对B的解释是 the modifying phrase has no referent。而A 的解释是phrase 错误德修饰了 fetal heartbeats。
为什么对B的解释是没有修饰对象啊，意思是只能把using 放在前面吗？其它的过去分词修饰或分词修饰也是这样吗？

yashudong · 发表于 2009-12-27 21:58:41

自己顶下

w3d001 · 发表于 2009-12-28 01:50:09

我来简单回答一下，参考。选e没有问题
b中的，useing结构是有歧义的，可以理解为主句Fetal heartbeats can be detected ...的方式壮语从句，同时也可以理解为修饰前面的 twelfth week of pregnancy，这是问题1。
然后你就按照这样l理解看看，不管是上述那种情况带进句子用useing都是不对的，做状语 Fetal heartbeats useing，f病发出 use这一动作？还是twelfth week of pregnancy 发出useing这一动作？
这就造成了没有指代修饰的问题

大全910 修饰问题

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