Question

IN TWO YEARS 和 TWO YEARS LATER 有什么区别

Answer 1

IN TWO YEARS 和 TWO YEARS LATER 的区别在于所使用的语境及语义表达。
IN TWO YEARS 用于说话时之后的“两年后”，表述的时间概念是“将来”；而 TWO YEARS LATER 则用于讲述已经发生的事情，即在过去时的语境中某个时间点以后的“两年后”。前者用于尚未发生的“两年后”的将来，后者用于已经发生的“两年之后”。比较：
Today's top careers may not be the same in two years. （两年后将会不一样 —— 尚未发生）
A man was shocked as his 'dead' wife appeared on TV show two years later. （失踪两年后再次现身 —— 已经发生）