the motorcar will undoubtedly change significantly over the

来源：学生作业帮编辑：拍题作业网作业帮分类：英语作业时间：2024/05/03 10:07:43

the motorcar will undoubtedly change significantly over the next 30 years
句中的over 改为 after 和in可以吗
如可以的话
都有什么区别,

原句表示,“毫无疑问,摩托车会在未来30年发生显著变化.”
over这儿 ,的确表示during,是一个延续的时间,因为在30年内是在不间断的持续地变化着.
如果用after的话,就把30年的之前和之后给断开了,不可能是30年这段时间都不会有改变,而30年后才开始变化吧?所以after不好.
in基本同上,表示30年之后,也不妥.所以over是最恰当的.

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