Đổi sang câu bị động
1. I had bought this pen before I went to bed last night
2. Nina had washed the dishes
3. I had written a report
4. Sam had done his exercise by noon
5. They had not finished the report before they had a test
6. We had seen this movie before Nina called
7. After I had cleaned the house, I went to school
8. After Mark had washed his clothes, he studied
9. Vicky had ironed the clothes by noon
10. I hadn't brushed my teeth before I went to bed last night
1. I had bought this pen before I went to bed last night
=> This pen had been bought before I went to bed last night.
2. Nina had washed the dishes
=> The dishes had been washed by Nina.
3. I had written a report
=> A report had been written.
4. Sam had done his exercise by noon
=> Sam's exercise had been done by noon.
5. They had not finished the report before they had a test
=> The report hadn't been finished before they had a test.
6. We had seen this movie before Nina called
=> This movie had been seen before Nina called.
7. After I had cleaned the house, I went to school
=> After the house had been cleaned, I went to school.
8. After Mark had washed his clothes, he studied
=> After Mark's clothes had been washed, he studied.
9. Vicky had ironed the clothes by noon
=> Vicky's clothes had been ironed by noon.
10. I hadn't brushed my teeth before I went to bed last night
=> My teeth hadn't been brushed before I went to bed last night.