1. This dish is brought to me by the waiter

=> The waiter brings me this dish.

2. These postcards are sent to us by our friends

=> Our friends send these postcards to us.

3. Are the police making inquires about the thief?

=> Are inquires about the thief being made by the police?

Công thức câu bị động thì HTĐ

Chủ động : S + V(s/es) + O

Bị động : S+ is/am/are + V (P2) + (by + O)

Công thức câu bị động thì HTTD

Chủ động : S + is/am/are + V-ing + O

Bị động : S + is/am/are + being + V (P2)+ (by + O)

$1.$ This dish is brought to me by the waiter.

$⇒$ The waiter brings me this dish.

$2.$ These postcards are sent to us by our friends

$⇒$ Our friends send these postcards to us.

$3.$ Are the police making inquires about the thief ?

$⇒$ Are inquires about the thief being made by the police ?

______________________________________________________________

$Structure :$

$\text{Công thức câu bị động thì HTĐ :}$

$⇒$ Chủ động : S + V(s/es) / V_inf + O.

$⇒$ Bị động : S + is / am / are + V3 / V-ed + (by + O).

$\text{Công thức câu bị động thì HTTD :}$

$⇒$ Chủ động : S + is / am / are + V-ing + O

$⇒$ Bị động : S + is / am / are + being + V3 / V-ed+ (by + O).