Passive exercises by agent

How to use the by-agent, examples

He writes a book.
Tim calls a taxi.
Classes use computers.

A book is written by him.
A taxi is called byTim.
Computers are used by classes.

English passive by agent

Passive Voice with free online passive simple present exercises - by agent, passive rules and passive voice examples.

Online exercises English grammar and courses.
Free tutorial to English active and passive voice. So don't hesitate to learn the difference between active voice and passive voice in writing with the English Grammar index active voice and passive voice.