Câu bị động ( Thì QKĐ `-` HTTD `-` HTHT `-` TLĐ `-` ĐTKT ) :

`-` Thì QKĐ : S + was / were + V3 / PII ( by O )

`-` Thì HTTD : S + is / am / are + being + V3 / PII ( by O )

`-` Thì HTHT : S + have / has + been + V3 / PII ( by O )

`-` Thì TLĐ : S + will be + V3 / PII ( by O )

`-` ĐTKT : S + ĐTKT + be + V3 / PII ( by O )

`2`.Fiona was invited to John's birthday party last night

`3`.The dinner is being prepared in the kitchen by her mother

`4`.Our teeth should be cleaned twice a day

`5`.The English grammar has been explained by our teachers

`6`.The accident was caused in this city by some drunk drivers

`7`.His parents will be visited by Tom next month

`\text{@ TheFox}`

$@dream$

`2,` Finona was invited to John's birthday party last night.

`->` Bị động thì quá khứ đơn: S + was/ were + p.p + (by O).

`3,` The dinner is being prepared in the kitchen by her mother.

`->` Bị động thì hiện tại tiếp diễn: S + am/is/are + being + p.p + (by O).

`->` by O sau trạng từ chỉ nơi chốn

`4,` Our teeth should be cleaned twice a day.

`->` Bị động của should: S + sould + be + p.p + (by O).

`5,` The English gramma has been explained by our teachers.

`->` Bị động thì hiện tại hoàn thành: S + have/has + been + p.p + (by O).

`6,` The accident was caused in this city by some drunk drivers.

`7,` Tom's parents will be visited (by him) next month.

`->` Bị động thì tương lai đơn: S + will + be + p.p + (by O).