`\text{1. The roof couldn't be repaired yesterday}`

- Bị động với Modals Verb: S+ can/ could/ should..+ (not)+be+ Vpp/ed

`\text{2. Many visitors are attracted by the beautiful city}`

- Bị động hiện tại đơn: S+ am/ is/are+ Vpp/ed+ (by+O)

`\text{3. Nothing was done by her when she lived in the city}`

- Bị động Quá khứ đơn: S+ was/were Vpp/ed+ (by+O)

$\text{4. The flight will be had to cancel because of the bad weather }$

- Bị động tương lai đơn: S+ will+ be+ vpp/ed+ (by+O)

$\text{5. The letter was being read while she was cooking}$

- Bị động quá khứ tiếp diễn: S+was/ were+ being+ Vpp/ed+ (by+O)