求助～～现在分词修饰问题！ TTGWD4-Q1

fannybeibei

TTGWD4-Q1:
The Acoma and Hopi are probably the two oldest surviving Pueblo communities, both dating back at least a thousand years.
A. both dating
B. both of which have dated  
C. and each has dated
D. and each one dating
E. each one of which date
选A
我知道别的都不对，也知道A是独立主格，但难道不应该是dated而不是dating么？
用OG证明：
78. Fossils of the arm of a sloth, found in Puerto Rico in 1991, have been dated at 34 million years old, making the sloth the earliest known mammal on the Greater Antilles Islands.
140. Rock samples taken from the remains of an asteroid about twice the size of the 6-mile-wide asteroid that eradicated the dinosaurs have been dated at 3.47 billion years old and thus are evidence of the earliest known asteroid impact on Earth.

The Acoma and Hopi自己怎么可以去date，是人们date The Acoma and Hopi，所以是被date，所以，dated。。。

求指教！

youngerlee

4-Q1
pueblo意思是印第安部落...dating是他们自己date的....................

而且后面的分句是个从句啊,从句能用dated?要用也只能用being dated吧??

我的意见,写完觉得不太靠

fannybeibei

umm...因为我觉得是独立主格，所以我以为
both dating...    & both dated...   都是可以的
那OG上两个是dated呢，我感觉这里就像说一个客观事实，为什么要印第安部落自己date自己呀～

还是谢谢youngerlee 了
一起讨论

继续期待解答～

liptontea

date back to / date from （无被动语态） to have lasted or existed since 回溯至...年代，始于...

This church dates back to 1173.
The custom dates from the time when men wore swords.

OG题中的have been dated at 34 million years old 作推断...的年代，鉴定...的年代解，是transitive verb.

The archaeologists have dated the building to about 250 B.C.

fannybeibei

醍醐灌顶，谢谢liptontea

huosijie

哇！！！终于解惑啦！！！独立主格那套说法真是晕头转向

佳佳蔻蔻

个人觉得这里的A选项不是独立主格的用法，参考prep独立主格出现的三个标志词：n+n/v+ing/v+ed; each***;with***
dating应该是分词作状语修饰逻辑主语的；

yali9777

同意楼上A不是独立主格，而是现在分词短语做状语修饰句子的主语。所谓独立主格是自带逻辑主语的分词短语，这里的both是adv.修饰date。

_Ashley

不同意楼上说法  dating做状语只能表示伴随或者表示结果  主系表结构不能使用动词伴随 前句与后句也不存在能表示结果的关系  此处应该是现在分词做定语  （PS.我也没有理解到是独立主格结构的那套说法）