256. During an era when interracial tensions in the United States have run high, Rosa Parks became a quiet, unassuming symbol of the continued struggle for human dignity.
(A) have run high
(B) ran high
(C) had run highly
(D) run high(B)
(E) were running highly
A为什么不对?"an era"表示的是一段时间,为什么不用现在完成时?
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1,和主句时态统一。
2,when ...have... ,when加完成时相当于after,在本题里意思晦涩。
能详细说一下“主从句”时态一致的问题吗?对于这个问题,我比较模糊
我认为run high在这里类似系表结构,又如:
(1) Grapes are selling high this season.
(2) sell short 卖 空
感谢各位指正。
进行时不佳,有持续的意思,而意思时过去时间段的状态,有动作一直延续的意思。不合适。
就像1930年代,利率很低,这里用过去进行时显的absurd
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