`1` This cake was baked by Jim yesterday.

`=>` Bị động quá khứ đơn

`(+)` S + was / were + Vpp + .....

bake `->` baked

`-` cake là số ít nên chia với was

`DHNB`: yesterday

`2` A new apartment is going to be bought by them next year.

`=>` BỊ động tương lai gần

`(+)` S + to be + going to + be + Vpp + .....

buy `->` bought `->` bought

`-` A new apartment là số ít nên chia is

`3` Have the christmas cards been sent to your family?

`=>` Bị động hiện tại hoàn thành

`(?)` Have / has + S + been + Vpp + .... ?

send `->` sent `->` sent 

`-` Christmas cards là số nhiều nên chia have

`4` Alice secretary was appointed for the meeting by the committe.

`=>`Bị động quá khứ đơn

`(+)` S + was / were + Vpp + .....

`-` Alice secretary là số ít nên chia với was

`5` Anny will be given a ride to school by Tom tomorrow.

`=>` Bị động tương lai đơn

`(+)` S + will + be + Vpp + .....

give `->` gave `->` given

`DHNB`: tomorrow

`6` This room is kept tidy all the time

`=>` BỊ động hiện tại đơn

`(+)` S + to be + Vpp + ....

keep `->` kept `->` kept

`-` This room là số ít nên chia is

`7` Ann was given some bananas and some flowers.

`=>` Bị động quá khứ đơn

`(+)` S + was / were + Vpp + .....

give `->` gave `->` given

`-` Ann là số ít nên chia was

Cách `2`:

`-` Some bananas and some flowers were given to Ann by us.

`=>` Bị động quá khứ đơn

`(+)` S + was / were + Vpp + .....

give `->` gave `->` given

`-` Some bananas and some flowers là số nhiều nên chia were

`8` The fridge was moved into the living room by them.

`=>` Bị động quá khứ đơn

`(+)` S + was / were + Vpp + ...

`-` Fridge là số ít nên chia was

move `->` moved `->` moved

$\text{1.}$ This cake was baked by Jim yesterday.

→ Bị động thì Quá Khứ Đơn : S + was/were + Vpp + ( by O ) 

$\text{2.}$ A new apartment is going to be bought next year. 

→ Bị động thì Tương Lai Gần : S + is/am/are + going to + be + Vpp + ( by O ) 

$\text{3.}$ Have the Christmas cards been sent to your family?

→ Bị động thì Hiện Tại Hoàn Thành : S + has/have + been + Vpp + ( by O ) 

$\text{4.}$ Alice secretary was appointed for the meeting by the committee .

→ Bị động thì Quá Khứ Đơn : S + was/were + Vpp + ( by O ) 

$\text{5.}$ Anna will be given ride o school by Tom tomorrow. 

→ Bị động thì Tương Lai Đơn : S + will + be + Vpp + ( by O ) 

$\text{6.}$ This room is kept tidy all the time.

→ Bị động thì Hiện Tại Đơn : S + is/am/are + Vpp + ( by O ) 

$\text{7.}$ Ann was given some bananas and some flowers.

→ Bị động thì Quá Khứ Đơn : S + was/were + Vpp + ( by O ) 

$\text{8.}$ The fridge was moved into the living room.

→ Bị động thì Quá Khứ Đơn : S + was/were + Vpp + ( by O )  

$\text{#Keisha}$