`1,` 

- It is said that he is a good teacher.

- He is said to be a good teacher.

`2,`

- It is expected that Hillary will become the new president.

- Hillary is expected to become the new president.

`3,`

- It is said that rickshaws are quicker and cheaper than taxis.

- Rickshaws are said to be quicker and cheaper than taxis.

`4,`

- It is known that Ha Long Bay is a World Heritage Site.

- Ha Long Bay is known to be a World Heritage Site.

`5,`

- It is thought that she works 16 hours a day.

- She is thought to work 16 hours a day.

`@` Câu bị động chỉ ý kiến (các từ như think , say , claim , report , believe,...)

- Câu chủ động : S1 + V1 + that + S2 + V2 ... 

- Câu bị động :  

Cách 1 : It + be + V1(chia ở Vpp) + that + S2 + V2

Cách 2 : Có 2 cách 

- S2 + be + V1(chia ở Vpp) + to V2 -> dùng khi 2 mệnh đề cùng thì , cùng bậc (HTĐ - HTĐ , QKĐ - QKĐ , HTĐ - TLĐ.)

- S2 + be + V1 (chia ở Vpp) + to have + V2 (chia ở Vpp) -> dùng khi 2 mệnh đề khác thì , khác bậc (HTĐ - HTHT , HTĐ - QKĐ , QKĐ - QKHT.) 

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

I am allowed to go to the party by my parents.

- be allowed to do sth : được cho phép làm việc gì

- Câu bị động thì HTĐ : S + is/am/are + Vpp + (by O)

`@` Câu bị động `-` tường thuật :

`-` S `+` be `+` say / think / report / expect / ... `+` `S2` `+` `V2` `+` `O2` .

`=` It `+` be `+` said / thought / reported / expected / ... ( that ) `+` `S2` `+` `V2` `+` `O2` .

`=` `S2` `+` be `+` said  / thought / reported / expected / ... `+` to `V2` `+` `O2` .

`1.`

`-` It is said that he is a good teacher .

`-` He is said to be a good teacher .

`2.`

`-` It is expected that Hillary will become the new president .

`-` Hillary is expected to become the new president .

`3.` 

`-` It is said that rickshaws are quicker and cheaper than taxis .

`-` Rickshaws is said to be quicker and cheaper than taxis .

`4.``

`-` It is known that Ha Long Bay is a World Heritage Site .

`-` Ha Long Bay is known to be a  World Heritage Site .

`5.` 

`-` It is thought that she works `16` hours a day .

`-` She is thought to be works `16` hours a day .

`-` `-` `-` `-` `-` `-` `-` `-` `-` `-` `-` `-` `-` `-` `-` `-` `-` `-` `-`.

My parents allow me to go to the party .

`=>` I am allowed to go to the party by my parents .

`-` BD `-` HTĐ : S + am / is / are + Ved / V3 + ( by O ).

`-` Allow + ( sb ) + to V`-`infi : cho phép ai làm gì .