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加一运备唤段时间有两种含义。
in加一段旁凯滚绝时间与现在时，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.
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.
in+一段圆悔蚂时间不可以用在过前嫌去式
have去掉，returned把ed去掉橘埋
came 该为come