In the way, On the way, By the way, In a way

In the way:

  • Please move this chair. It is in the way.
  • Do your work in the way I have shown you.

On the way:

  • On the way to the station, I bought some cigarettes.

In this way:

  • He saves old envelopes. In this way, he has collected a great many stamps.

By the way:

  • By the way, have you seen Harry recently ?

In a way:

  • In a way, it is an important book.