43. I was bought a nice poster by Minh yesterday.

→ A nice poster was bought to me yesterday by Minh.

⇒ A: S + Ved + O. 

     P: S + was/were + P2 + by O. 

44. This room hasn't been used for ages.

⇒ A: S + have/has + P2 + O.

    P:   S + have/has + been + P2 + by O.

45. They were said to buy this shop last year.

→ It was said that they bought this shop last year.

⇒ A: S + Ved + O. 

    P: S + was/were + P2 + by O. 

46. My bicycle had been repaired yesterday by him.

⇒ A: S + had + P2 + O.

     P: S + had + been + P2 + by O.

47. She was seen to come in.

⇒ A: S + Ved + O. 

    P: S + was/were + P2 + by O. 

$\text{@su}$

43, 

⇒ I was bought a nice poster by Minh yesterday

⇒ A nice poster was bought to me yesterday by Minh

44, ⇒ This room hasn't been used for ages

45, 

⇒ They were said to buy this shop last year

⇒ It was said that they bought this shop last year.

46, ⇒ My bicycle had been repaired yesterday by him.

47, ⇒ She was seen to come in.

Bonus: Passive Voice (Câu bị động)

Active: S + V + O

⇒ Passive: S (o) + tobe + P2 + (by + O (s))

$\text{#BTS}$