After and In.
Notice carefully the difference between the following Prepositions (187 - 196).
After and In.
# After means at the close of; it refers to either past or future.
We left after a month’s stay.
He is going after some days.
# In refers to the future. It means before a certain time is over, or at the close of.
In a few years, there will be many changes.
I’m coming in a minute.