structure of passive voice
1. Past
a. Past Simple Tense : subject + was/were + V3
b. Past Continuous Progressive Tense : Subject + was being/were being + V3
c. Past Perfect Tense : Subject + had been + V3
2. Present
a. Present Simple Tense : Subject + is/am/are + V3
b. Present Continuous Progressive Tense : Subject + is being/am being/are being + V3
c. Present Perfect Tense : Subject + has been/have been+ V3
"if use modal, the structure : Subject + modals+ be+ V3 "
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1. Past
a. Past Simple Tense : subject + was/were + V3
b. Past Continuous Progressive Tense : Subject + was being/were being + V3
c. Past Perfect Tense : Subject + had been + V3
2. Present
a. Present Simple Tense : Subject + is/am/are + V3
b. Present Continuous Progressive Tense : Subject + is being/am being/are being + V3
c. Present Perfect Tense : Subject + has been/have been+ V3
"if use modal, the structure : Subject + modals+ be+ V3 "
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