`1 ` Fossill fuels won't be burnt for energy in the future

`->` Công thức bị động thì tương lại đơn : S+will (not) + be +P2 + (by OS)

`2` Because Trung was sickness, he didn't go to school this morning 

`->` Because + Mệnh đề = because of + Ving/N : bởi vì

`3` Although it is very noisy in the city , we enjoy living there

Although + clause = Mặc dù

`4` We were caused great disappointment by the failure

`-> ` Bị động thì QKĐ : S+was/were+P2+(by Os)

`II)`

`5` Sources of energy will be used more effectively for our future

`->` Bị động TLĐ đã có ở trên

`6` The use of biogas will be increased for cooking by people in the countryside

`->` Bị động TLĐ đã có ở trên

`7` A hydro power station will be built in the North of the country next decade

`->` Bị động TLĐ

`8` The problem of energy shortage will be solved by using solar energy 

`->` Bị động TLĐ

1. Fossil fuels won't be burnt for energy in the future. (chuyển sang bị động) 

2. Because Trung was sickness, he didn't go to school. (cấu trúc Because...,)

3. Although the city is very noisy, we enjoy living there. ( cấu trúc although bỏ but)

4. We were disappointed by the failure of the team.

5. Sources of energy wil be used more effectively for our future. (câu bị động)

6. The use of biogas will be increased for cooking in the countryside. (câu bị động)

7. A hydro power station will be built in the North of the country next decade. (câu bị động)

8. The problem of energy shortage will be solved by using solar energy. (bị động)