B1 Grammar
B1 Grammar
Simple passive
Simple passive
Use:
The passive voice is used:
a) When the object of a sentence is more important than the subject
The city was destroyed by the volcano.
b) When the subject of the sentence is unknown.
This cheese was made in Canada.
It is common in formal and scientific writing.
To mention who caused the action, use by.
The bins were emptied by the cleaning staff.