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In 1981 children in the United States spent an average of slightly less than two and a half hours a week doing household chores; by 1997 they had spent nearly six hours a week.

正确答案: B

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关于had……GWD一个题求助

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楼主
发表于 2015-8-29 20:43:30 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式

In 1981 children in the United States spent an average of slightly less than two and a half hours a week doing household chores; by 1997 they had spent nearly six hours a week.

  • Achores; by 1997 they had spent nearly six hours a week  分析A选项
  • Bchores; by 1997 that figure had grown to nearly six hours a week  分析B选项
  • Cchores, whereas nearly six hours a week were spent in 1997  分析C选项
  • Dchores, compared with a figure of nearly six hours a week in 1997  分析D选项
  • Echores, that figure growing to nearly six hours a week in 1997  分析E选项
这个题楼主选了C……然而,答案是楼主秒杀的一个选项,为啥81年用spent,97年都能用had grown了?!!
这是几个意思啊……

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沙发
发表于 2015-8-29 21:34:43 | 只看该作者
1981指代的事件是1981年发生的(in 1981),是一个精确的过去。
1997指代的事件是1997年之前就已经开始发生的(by 1997),是一个过去的过去。
板凳
 楼主| 发表于 2015-8-30 09:24:53 | 只看该作者
yxlrei 发表于 2015-8-29 21:34
1981指代的事件是1981年发生的(in 1981),是一个精确的过去。
1997指代的事件是1997年之前就已经开始发生的 ...

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