finish
When something finishes, it ends.
The concert finished at midnight.
When you finish what you are doing, you reach the end of it.
Have you finished the ironing yet?
When he had finished, he closed the file.
You can say that someone finishes doing something.
Jonathan finished studying three years ago.
I've finished reading your book.
Be careful
Don't say that someone ‘finishes to do’ something.
Don't say that someone ‘finishes to do’ something.