两周后他就能骑自行车了 英文是Two weeks later he was able to ride a bike,

题目

两周后他就能骑自行车了 英文是Two weeks later he was able to ride a bike,
两周后不是将来时吗?为什么用了was?

答案

two years later 是以过去的时间为起点的,用过去时,如果要用将来时的话,应该用in two years