chuyển sang bị động ạ 

1. Some English exercises were given by the teacher yesterday

2. English is spoken in many African countries

3. His homework wasn't done by him last night

4. Was this house built last year `?`

5. Maize isn’t grown in this area

`-`-`-`-`-`-`-`

`@` Bị động các thì `:`

`*` QKD `:` S+ was/were + V3

`*` HTD `:` S+ is/am/are + V3

`*` Danh từ số ít `:` + is/was

`*` Số nhiều `:` + are/were

`*` I + am/was

 `\color{green}\text{#4T}`

`1.` Some English exercises were given by the teacher yesterday

`2.` English is spoken in many African countries

`3.` His homework was not done by him last night

`4.` Was this house built last year?
`5.` Maize is not grown in this area

`___________________`

`*` Bị động HTD: S + am/is/are + V3/ed + (by + O)
`*` Bị động QKD: S + was/were + V3/ed +(by + O)