1. This film has been seen by Tom before. 2. The newspaper has been read by Nina already. 3. These movies have been seen by them yet. 4. The contract has been signed by me. 5. The tickets have been bought by these men. 6. This teddy bear have been bought by me in that shop. 7. Her hat has been found by Vicky. 8. My bag has been lost by me. 9. The report has been finnished by us. 10. My exercises have been done by me for three days. Nếu cậu còn chưa hiểu thì công thức là : have/has + been + P2(cột 3 trong bảng) Công thức cái thì khác chuyển sang Passive voice : Present Simple : - Tense : I buy an ice cream - Passive Is/are/am + P2 Present Continuous: - Tense I am buying an ice cream -Passive : Is/are/am + being + P2 Past Simple - Tense : I bought an ice cream - Passive : Was/Were + P2 Past Continuous: - Tense : I was buying an ice cream -Passive : Was/were + being + P2 Will : - Tense : I will buy an ice cream - Passive : Will + be + P2 Present Perfect : - Tense : I have bought an ice cream - Passive : Have/has + been + P2 Should/may/might/can : - Tense : I should/..... Buy an ice cream - Passive : Should/may/might/can + be + P2 Be going to : - Tense : Im going to buy an ice cream -Passive: Be going + tobe + P2