passive we use it when we don't know the person who did the action or when the most important thing is the action not the subject
to change the sentence from active to passive there are 4 steps you have to follow to make it easy for your students
1 - begin by the object
2- helping verb according to the tense of the sentence in active if its ( present simple use is or are ) if its ( present continuous us past continuous use being ) ( present perfect or past perfect use been
3 - past participle
4 - by subject
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