推 max6:感恩，文法真奧妙 10/08 10:29
: OG12-17
: 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
: (D) reduced the amount of phosphates that
: municipalities are allowed to dump
以下中英夾雜以利對照原題XD:
==============================================================
"are allowed to dump":
1969 1970 1971 1972 1973 1974
dump量 10 8 9 3 2 1
(從以上可看出，1972後仍然被允許dump，只是reduce了)
===============================================================
"had been allowed to dump":
1969 1970 1971 1972 1973 1974
dump量 10 8 9 0 0 0
(可看出1972後就沒了，這裡跟原題句意不符，因為reduce不代表減到0)
(考邏輯!!?? XD)
若這裡不是reduce，而是eliminate或是stop
就可以使用had been
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◆ From: 140.112.4.170
※ 編輯: scrokatrs 來自: 140.112.4.170 (10/04 11:33)