标题: 听听急求OG12—86，为什么用现在完成时？？ [打印本页] 作者: 听sophie 时间: 2011-2-19 02:22 标题: 听听急求OG12—86，为什么用现在完成时？？ 86. The results of the company’s cost-cutting measures are evident in its profi ts, which increased 5 percent during the fi rst 3 months of this year after it fell over the last two years.
(A) which increased 5 percent during the first 3 months of this year after it fell (B) which had increased 5 percent during the first 3 months of this year after it had fallen (C) which have increased 5 percent during the first 3 months of this year after falling (D) with a 5 percent increase during the first 3 months of this year after falling (E) with a 5 percent increase during the first 3 months of this year after having fallen
答案是C 这题唯一不明白的就是：为什么使用的时态是现在完成时？？作者: shallbytwo 时间: 2011-2-19 04:30
划线部分是用来证明前文的证据，所以是到说话时已经发生了的。说话时用的是一般现在时，所以划线部分用现在完成时。时间标志：during作者: ran2010zx 时间: 2011-2-19 08:19
falling和后面那一坨做伴随状语~作者: evelyn205205 时间: 2011-2-19 17:18
during the first 3 months表示一个大段的时间，所以要用完成时。 since，大段时间，ever since——这三个标志是用来表示完成时的作者: 听sophie 时间: 2011-2-20 13:57
during the first 3 months表示一个大段的时间，所以要用完成时。 since，大段时间，ever since——这三个标志是用来表示完成时的