passive Voice In The simple present

1 the writers keep the butter here

2 they feed the animals at the zoo twice a week 

3 out friends sent there postcards to us

`Answer:`

`1,` The butter is kept here by the writers

`2,` The animal at the zoo are fed twice a week

`3,` There postcards were sent to us by our friends

________________________________________

$\text{*Structure: Passive voice}$

`@` Câu bị động thì HTĐ:

`+)` $\text{S + am/is/are +VpII + by O...}$

`-)`  $\text{S + am/is/are + not + VpII + by O...}$

`?)` $\text{Am/Is/Are + (not) + S + VpII + by O...}$

`@` Câu bị động thì QKĐ:

`+)` $\text{S + was/were+VpII + by O...}$

`-)`  $\text{S + was/were+ not + VpII + by O...}$

`?)` $\text{Was/Were + (not) + S + VpII + by O...}$

`#TD`

`1.` The butter is kept here by the writers.

`-` Bị động HTD : S + am/is/are + V-ed/c3 + ... + (by+O)

`2.` The animals at the zoo are fed twice a week.

`3.` These postcards were sent to us by our friends.

`-` Bị động QKD : S + was/were + V-ed/c3 + ... + (by+O)

`-` send sth to sb : gửi cái gì cho ai