*We use the passive when we are interested in the object or If we don't know the cause of the action:
*The steps of changing the sentence from active to passive:
1-the object comes first.
2-Use the suitable formation of (be) with all tenses.
3-By precedes the subject.
*The present simple passive:
EX: My mother makes a cake every Friday.(active)
-A cake is made by my mother every Friday(passive)
EX:I eat apples every day.(active)
-Apples are eaten(by me) every day.(passive)
*The past simple Passive:
EX:I played football yesterday.(active)
-Football was played (by me) yesterday.(passive)
EX:The pharaohs built the pyramids.(active)
-The pyramids were built by the pharaohs.(passive)
*The present continuous passive:
EX:She is doing her homework.(active)
-Her homework is being done (by her)(passive)
*The past continuous passive:
EX:They were sweeping the floor.(active)
-The floor were being swept (by them).(passive)
*The present perfect passive:
EX:I have bought two cars.(active)
-Two cars have been bought.(passive)
*The past perfect passive:
EX:The man had left the job.(active)
-The job had been left by the man.(passive)
*The future simple passive:
EX:I will cook meat.(active)
-Meat will be cooked(by me).(passive)
EX:He is going to watch the match tomorrow.(active)
-The match is going to be watched (by him) tomorrow.