Active to Passive

There are different ways to say the same thing. It all depends in what information you want to emphasize of sentence. Active and passive sentences are a great way to change your sentences while at the end you say the same information, also changing a sentence from active to passive helps a lot for practicing english.

Here is an example:

• You are using a computer. (Active)
• A computer is being used by you. (Passive)

This link will teach you the rules needed to make this kind of exercise.