請教一題SC

Believed to originate from a small area on their forehead,elephants emit low-frequency sounds that may be used as a "secret language" to communicate with other members of the herd.

A) Believed to originate from a small area on their forehead,elephants emit low-frequency sounds that may be used

B)Elephants emit low-frequency sounds that are believed to originate from a small area on their foreheads,and they may use this

C)Elephants emit low-frequency sounds,believed to originate from a small area on their foreheads,that they may use

D)Originating,it is believed,from a small area on their foreheads,elephants emit low-frequency sounds they may use

E)Originating,it is believed,from a small area on their foreheads,low-frequency sounds are emitted by elephants that maybe used

Ans: (C)

我的疑問是..............

雖然 , believed .............., 插入句 刪掉後 沒有問題
之前也看過不少 N,________, that ... 中間隔著插入句 that仍然修飾 N

Elephants emit low-frequency sounds which are believed to originated...

non-restrictive clause 改 participle phrase

=> Elephants emit low-frequency sounds,believed to originate



只是我也有相同困惑著是
believed是否會修飾到 Elephants........?

可是如果用句意評斷的話
,believed to originate from a small area on their foreheads
主詞就肯定不是 Elephant自己 自己怎麼會 orginiate from 自己的foreheads呢...

搂主说的对，logically, believed 不能修饰elephants.

请参阅OG146T对choice E 的解释.

joe11,

我以為    S+V...., believed  (因為以逗點分隔 所以 believed 修飾main clause's subject 而非the nearest noun)

我看了OG 146 (E) 不同的是
damage lacking 中間沒有","逗點 所以修飾 the nearest noun "damage"

疑問是 有逗點和沒逗點 修飾對象如何區分?

難道此題一定要以句意來判斷 , believed 的修飾對象嗎? 所以 , believed 修飾沒有規定是修飾 the nearest noun or 主要子句的主詞?

感謝

楼主在believed之前加入which be（句首除外）就明白插入语修饰的具体对象了；句意也是一种判断；