`III` :

`1.`The problem of energy shortage will be solved by using energy.

`2.`A new hydropower plant will be built to meet increasing demand by the govemment.

`3.`The sun will be used as the biggest energy source for the future.

`4.`The use of electricity will be minimized to save our energy.

`=>`Cấu trúc câu bị động với thì tương lai đơn :

`(+)` Khẳng định : S + will + be Vpp + (by O)

`(-)` Phủ định : S + will not/ won't + be Vpp + (by O)

`(?)` Câu hỏi nghi vấn : Will + S + be Vpp + (by O) ?

`1.` be solved by using energy.

`2.` be built to meet increasing demand by the govemment.

`3.` be used as the biggest energy source for the future.

`4.` will be minimized to save our energy.

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`+` Cấu trúc câu bị động - thì TLĐ: S + will + be + PII +(BY   O)

`@` Khi by + O là by us, by them, by people, by someone, by somebody, by buiders, by we.....thì ta bỏ đi không sử dụng trong câu bị động.