标题: SC一题求教 [打印本页] 作者: houhaibo528 时间: 2011-9-13 14:46 标题: SC一题求教 If current trends continue, by the year 2010 carbon emissions in the United States will soar to a level more than one-third high than were those in 1990, according to official projections. A. will soar to a level more than one-third high than were those B. will soar to a level more than one-third high than that C. would soar to a level more than one-third high than it was D. would soar to a level more than one-third high than were those E. would soar to a level more than one-third high than they were 答案是B,我选了D, 我有两个问题，想请教 1.will 为什么不用would，选用虚拟语气的方法？ 2. carbon emissions 在后面为什么用that 代替，而不用those???作者: 线香花火 时间: 2011-9-13 14:53
IF present , THEN future 代表对未来的确定性，而如果要用IF的虚拟语气的话前面的continue要用continued， 后面的再用would表示的是不太会发生的情况。。。这个可能我说的不好你去看看manhattan 的113页~~作者: houhaibo528 时间: 2011-9-13 15:03
非常感谢，我马上去看，好像想起来，那个hypothetical subjunctive要用在不太可能发生的情况上 unlikely to happen 多谢！