in five years :在五年之内
Prices doubled in five years.
五年间物价上涨了一倍。
five years later : 五年之后
The war was over five years later.
五年后战争结束。
after five years: 五年之后
After five years, their marriage suddenly went wrong.
五年之后,他们的婚姻突然破裂了。
in five years用于将来事态,I'll return in five years.
after five years用在过去时,He returned after five years.
five years later是不是使用范围更广捏~
in five years is used by future tense. five years later is used by past tense.after five years is used by future tense or past tense.