38. 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.
(D)By the twelfth week of pregnancy, fetal heartbeats
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.
对于B OG的解释却说:the modifying phrase has no referent.这里是不是既可以指代fetal heartbeats又可以指代
pregnancy 所以说没有指代?
D,这个using 分词短语用的怎么不对啊?
基本上,-ing短语放在句尾是修饰邻近的动词的,所以using a Doppler ultrasound
device修饰的是be detected,逻辑主语是所修饰动词的逻辑主语。
B中分词短语using a Doppler ultrasound
device逻辑主语是fetal heartbeat,fetal heartbeat不能using...所以错误
D中using a Doppler ultrasound
device应该跟在它所修饰的名词后面,即By the twelfth week of pregnancy, fetal heartbeats can be detected by a physician using a Doppler ultrasound device
38. 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.
(D)By the twelfth week of pregnancy, fetal heartbeats
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.
对于B OG的解释却说:the modifying phrase has no referent.这里是不是既可以指代fetal heartbeats又可以指代
pregnancy 所以说没有指代?
D,这个using 分词短语用的怎么不对啊?
D中的using逻辑主语是heartbeats,逻辑错误。。
只能说fetal heartbeats that are used xxxx by a physcian can be detected..
基本上,-ing短语放在句尾是修饰邻近的动词的,所以using a Doppler ultrasound device修饰的是be detected,逻辑主语是所修饰动词的逻辑主语。
B中分词短语using a Doppler ultrasound device逻辑主语是fetal heartbeat,fetal heartbeat不能using...所以错误
D中using a Doppler ultrasound device应该跟在它所修饰的名词后面,即By the twelfth week of pregnancy, fetal heartbeats can be detected by a physician using a Doppler ultrasound device
那也就是说D中using a Doppler ultrasound device是做定语修饰名词而不是做状语修饰动词?
不是这个意思,using a Doppler ultrasound device放在by前面,而它前面又没有名词就只能做状语了,但是逻辑意思不对。它应该做名词physician的定语
明白了,多谢~~
不过aeoluseros你这个头像差点吓倒我了
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