`1`

`->` My house is cleaned by my mother every day

`2`

`->` Flowers in the garden are watered by my grandfather every afternoon

`3`

`->` School was built last year

`4`

`->` My computer was bought two year ago

`5`

`->` My room has just repainted by my father

`CT`

CĐ:S + V + O

`->` BĐ:S+be +P2 + by + O

1. My house is cleaned by my mother everyday

-> Câu chủ động: S1 + V +O

     Câu bị động:    S2 + TO BE + PII

chia động từ “to be” theo dạng thì HTD; "my house" là N số ít nên + is

2. Flowers in the garden are watered my my grandfather every afternoon

-> "Flowers" là N số nhiều + are

3. School was built last year

-> last year: dấu hiệu của thì QKD; "school" là số ít -> was

4. My computer was bought two years ago

-> Ago: dấu hiệu của thì QKD; "My computer" số ít -> was

5. My room has just been repainted by my father

-> just: dấu hiệu thì HTHT; "by my father" câu bị động"

   S + has/have + been + PII + tân ngữ + (by SO)