OG12-74题: A 1972 agreement between Canada and the United States reduced the amout of phosphates that municipalities had been allowed to dump into the Greak Lakes. (A) reduced the amout of phosphates that municipalities had been allowed to dump (B) reduced the phosphate amout that municipalities had been dumping (C) reduced the phosphate amout municipalities have been allowed to dump (D) reduced the amout of phosphates that municipalities are allowed to dump (E) reduced the amout of phosphates allowed for dumping by municipalities 该题正确答案为D。 因为倾倒的行为一定是在协议之后并一直持续,所以动词不可能用过去完成或现在完成时,但为什么是municipalities are allowed这样的被动语态呢?就算被动,也应该是by municipalities吧?很不理解。还是我对句子理解有误?请大家帮忙答疑解惑。 提前谢谢了!
[此贴子已经被作者于2009/9/26 15:58:15编辑过] |