标题: 【求问大牛】关于时态,这两个句子是否矛盾?? [打印本页] 作者: apioh 时间: 2013-10-20 15:32 标题: 【求问大牛】关于时态,这两个句子是否矛盾?? GMAT OG2013-77
A 1972 agreement between Canada and the United States reduced the amount of phosphates that municipalities ARE allowed to dump into the Great Lakes.
prep 2008-193
New equipment and other improvements reduced the amount of time workers NEEDED to produce a ton of steel.
第二句因为没有提出具体时间,所以不知道这个reduce现在是否还有作用,所以用过去时needed肯定是对的作者: apioh 时间: 2013-10-20 17:47
非常感谢!!! 作者: apioh 时间: 2013-10-20 17:51
受ls启发,自己又查了查资料,总结如下,欢迎各位CDer指正拍砖~
GMAT OG2013-77 : A 1972 agreement between Canada and the United States reduced the amount of phosphates that municipalities ARE allowed to dump into the Great Lakes.
为方便理解,提取从句,补充完整,并变被动为主动:
the agreement allow M to dump the amount of p.
一般过去时、一般现在时都是一种状态,表示现在经常或者过去经常;现在持续或者过去持续。根据manhattan的讲解:一般现在时表示的事物“永恒的”状态或者经常发生的事件。 Sandy plays well with her friends这句话说的不是“S正在和她的朋友们玩”而是一个普遍成立的规律“S和她的朋友们玩得很好”。
补充:和agreement类似的还有law,agreement, directive.它们都可以对现在发生影响。
再看一个类似的例子: prep 2008-178
Last week local shrimpers held a news conference to take some credit for the resurgence of the rare Kemp's ridley turtle, saying that their compliance with laws requiring turtle-excluder devices on shrimp nets IS PROCTECING adult sea turtles.
这里并没有根据held a news conference 机械地把整个句子的时态都变成过去时,而是看到了compliance with laws 正在现在产生影响,因此是is protecting ! 关键的区别是compliance with laws对现在产生了影响!!!和上面agreement 仍然允许dump the amount of phosphates的道理是一样的。
prep 2008-193
New equipment and other improvements reduced the amount of time workers NEEDED to produce a ton of steel.
为方便理解,提取从句,补充完整:
Workers NEEDED the amount of time to produce a ton of steel.
根据语义,从句工人过去生产一吨钢铁所需要的时间。(现在已经不需要了)用现在时就是错误的。句子中没有指示认为