Grammar: Passive

Passive is used if we are interested in the object or we don't know who caused the action.

Example: Homework is required in class

We can only form a passive sentence from an active sentence when there is an object in the active.

How to do it from an active sentence?

• Use verb to be + past participle of the verb
• Object of the "active" sentence becomes subject in the "passive" sentence
• Subject of the "active" sentence becomes "object" in the "passive" sentence" (or is left out)