Question

對數學怨念很深的人類

第三格時態，看不太懂
答案是have been erected

still other
(D) the butle
by ancient tribes as a sort of astronomical calenda
about lunar and solar eclipses
They are believed to 3
The tribesmen may have used them to make the
4
except that we have no idea why they would have been so much interested in eclipse
Some think they may have been a temple, meant for religious or ritual ceremonies.
25m5100t
the functions were, it remains a mystery just how those huge stones wer
moved to the site and placed in such a circular arrangement.
ts are still puzzled
how the tribesmen managed to move the heavy stone columns.
(C) phases (D) ratios
boon bas
(C) by accident
A
1 (A) theses
2 (A) no longer
(B) series
(B) not only
(D) as a whole
3 (A) erect
(B) be erecting
(C) be erected
(D) have been ere
A
4 (A) construction
(B) predictin

Answer 1

剩餘

後面的by ancient tribes大概可以推得「被動語態」
然後第二行的時態可以推得「現在完成式」

對數學怨念很深的人類

現完式不是過去到現在嗎，他在講以前的事為什麼要用現完式🥹

剩餘

因為我這裡沒有原文 所以無法用文意上去推論
我只能用上下文去推敲出答案

對數學怨念很深的人類

啊抱歉

剩餘

這樣看下來
用完成式應該是強調過去已發生過的事實
（畢竟巨石陣那時候已經過很久且已發生過）
我覺得可以參考
S+be+ said/reported/thought + to VR/have+p.p.