What are the differences between these sentences?
I had never read Shakespeare until I started high school.
I never read Shakespeare until I started high school.
Jane lost the watch which she had bought the day before.
Jane lost the watch which she bought the day before.
For some time, I had wanted to do some kind of sport.
For some time, I wanted to do some kind of sport.
I had never read Shakespeare until I started high school.
I never read Shakespeare until I started high school.
Jane lost the watch which she had bought the day before.
Jane lost the watch which she bought the day before.
For some time, I had wanted to do some kind of sport.
For some time, I wanted to do some kind of sport.