in 3 days是什么时态Did you need to finish it in 3 days?和The robots can read a book in five minutes?中为什么可以不用将来时?

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in 3 days是什么时态Did you need to finish it in 3 days?和The robots can read a book in five minutes?中为什么可以不用将来时?
in 3 days是什么时态
Did you need to finish it in 3 days?和The robots can read a book in five minutes?中为什么可以不用将来时?

in 3 days是什么时态Did you need to finish it in 3 days?和The robots can read a book in five minutes?中为什么可以不用将来时?
第二句中的in表示在...之内,五分钟内机器人能读一本书.第一句表将来的三天

将来时