When I took the bus one morning, I had met a friend who taught me English in the Tutoring Center in college.
He asked me what I was going to do today.
I answered that I had to go to the school to buy a book.
He responded stating that buying books is a waste!
You should copy from the book.
I thought that this plan would be cheaper than buying the book.
He taught me how to copy from the book.
Thanks to my friend, I didn't have to buy the book for my friend.
I have learned a lot of things from him.