OG语法74

陶然异面直线

74.A 1972 agreement between Canada and the United States reduced the amount of phosphates that municipalities had been allowed to dump into the Great Lakes.

(A) reduced the amount of phosphates that municipalities had been allowed to dump
(B) reduced the phosphate amount that municipalities had been dumping
(C) reduces the phosphate amount municipalities have been allowed to dump
(D) reduced the amount of phosphates that municipalities are allowed to dump
(E) reduces the amount of phosphates allowed for dumping by municipalities

以前有个这个题的贴子但是没说清楚，我觉得A没错啊。
答案是说，法规现在仍然生效，所以选D。
但是我觉得是在原来的基础上减少的啊，这个原来的基础就是A啊。
求牛牛

abjure

我帮把OG的解释贴上来。

Verb form; Idiom


An agreement that occurred in 1972 is correctly
described with the past tense verb reduced. Since
the dumping continued after the date of the
agreement, the past perfect verb had been allowed
should instead be the present are allowed (if the
agreement remained in eff ect when the sentence
was written) or the past were allowed (if the
agreement was no longer in eff ect when the
sentence was written). Since were allowed does not
appear in any of the options, we can assume that
the correct verb tense is are allowed. Th e phrase
amount of phosphates is clear and idiomatically
correct, whereas phosphate amount is not idiomatic.
其实OG解释讲的很清楚
这里的协议是指讨论未来应该怎么做， 那当然未来协议的这个东西不可以用过去完成时来表述时态啦。

靓linda

C选项have been allowed to dump
为什么不行？
也是表示过去发生的事情持续到现在呀？？
十分疑惑。。
求解答

cyz12321

reduces错，应是reduced，因为前面有1972

陶然异面直线

好吧，不找对的，只找更对。