Bị động HTHT :

 ` ( +) `  ; S + have / has + been + VPII + by + O

 ` ( - ) `  :S  + haven't  / hasn't + VPII + by + O

 ` ( ? ) `  : Have / has + S + been + VPII + by + O

 ` 28  ` : The thief has been caught by the police recently 

 ` 29  ` : Many pictures of scenic beuty have been taken by our cousin since 2005

 ` 30  ` : Has the car been repaired by your father ? 

`28.` The thief has been caught by police recently

`29.` Many pictures of scenic beauty have been taken by our cousin since 2005

`30.` Has the car been repaired by your father?

*Cấu trúc bị động thì HTHT:

(+) S + has/ have + been + PP + (by O)

(- ) S + hasn't/ haven't + been + PP + (by O)

(? ) Has/ Have + S + been + PP + (by O)?