${7.}$ Was this chair made by your father?

${8.}$ By whom was your bicycle repaired?

          Who was your bicycle repaired by?

${9.}$ What plays was written by Shakespeare?

* bị động QKĐ

- dạng câu hỏi Yes/No: Was/Were (not) + S + V3/ed + (by+O) + time?

- dạng câu hỏi Wh/h: Wh/h + was/were + S + V3/ed + (by+O)

* trường hợp không có chủ ngữ phía trước câu Wh/H ta có cấu trúc như sau:

- Wh/h + V2/ed + O?

→ By whom + was/were + S ( tức là O ở câu chủ động ) + V3/ed?

     Who + was/were + S ( tức là O ở câu chủ động ) + V3/ed + by?

`7.` Was this chair made by your father?

- Cấu trúc: Was/Were + (not) + S + VpII + (by + O)?

`8.` By whom was your bicycle repaired?

- Cấu trúc: By whom + was/were + S (thing) + VpII?

`9.` What plays was written by Shakespeare?

- Cấu trúc: Wh-question + was/were + S + VpII + (by+O)?