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In twenty year, people could take trip to outer space.为什么将来时态里出现could,这里是什么意思.
人气:162 ℃ 时间:2020-04-09 05:16:42
解答
In twenty yearS,people could take trip to outer space.
虚拟语气.
因为是将来时,还没发生呢,所以需要虚拟.
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