`-` BĐ :

`+` QKĐ : S + was / were + VpII ( by O )

`+` HTTD : S + is / am / are + being + VpII ( by O )

`+` HTHT : S + have / has + been + VpII ( by O )

`+` TLĐ : S + will be + VpII ( by O )

`+` Should : S + should be + VpII ( by O )

`11`.The heavy box was carried into the room by the boys last week

`12`.We were warned not to go out alone by our parents

`13`.A new highway is being built around the city next year

`14`.That old house has been sold at the end of the road

`15`.You will be sent the results as soon as they are ready

`16`.He was given a present by his colleagues when he retired

`17`.A new pump was installed to supply water for the town

`18`.The onion should peeled and chopped and then fry it

`\text{# TF}`

`11.` The heavy box was carried into the room by the boys last week.

`-` Cấu trúc câu bị động - thì Quá khứ đơn: S + was/were + Ved/V3 + (BY  O)

`12.` We were warned not to go out alone by our parents.

`-` Cấu trúc câu bị động - thì Quá khứ đơn: S + was/were + Ved/V3 + (BY  O)

`13.` A new highway is being built around the city next year.

`-` Cấu trúc câu bị động - thì Hiện tại tiếp diễn: S + am/is/are + being + Ved/V3 + (BY  O)

`14.` That old house has been sold at the end of the road.

`-` Cấu trúc câu bị động - thì Hiện tại hoàn thành: S + have/has + been + Ved/V3 + (BY  O)

`15.` You will be sent the results as soon as they are ready.

`-` Cấu trúc câu bị động - thì Tương lai đơn: S + will be + Ved/V3 + (BY  O)

`16.` He was given a present by his colleagues when he retired.

`-` Cấu trúc câu bị động - thì Quá khứ đơn: S + was/were + Ved/V3 + (BY  O)

`17.` A new pump was installed to supply water for the town.

`-` Cấu trúc câu bị động - thì Quá khứ đơn: S + was/were + Ved/V3 + (BY  O)

`18.` The onion should peeled and chopped and then fry it.

`-` Cấu trúc câu bị động - Động từ khuyết thiếu: S + ĐTKT + be + Ved/V3 + (BY  O)