in +一段时间 可以用于过去时态中吗？？

We should have returned to our hometown in 3 days,but due to the storm,our flight had been canceled.At last,we came back to Changzhou in another 2 days.这句话语法对吗？

in加一段时间有两种含义。
1. in加一段时间与现在时，过去式连用表“'在某段时间内”，一般与完成某个动作有关。
I always eat my lunch in 15 minutes.
I finished my homework in 2 hours.
2. in加一段时间与将来时连用表示“。。。时间之后”。
My father will come back in 2 weeks.

但是有时也可以与一般过去时，一般将来时或者现在完成进行时连用。比如，一般现在时多用于完成时态 i have not heard from him for a long time. 也见用于其它时态：edison was a leading inventor of the world for 60 years.通常与现在完成时连用

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