`->` It is believed that the chinese invented paper

`->` The Chinese is believed to have invented paper

`*` Bị động ngoại tác:

They/people + believe/tell/say/... + that + S +  V + O

`=` it is + believed/told/said/... + that + S +  V + O

`=` S + tobe + believed/told/said/... + to_V + O

`-` Hai vế lệch nhau: HTĐ , QKĐ `->` dùng to have V3/ed

`1` `->` It is believed that the Chinese invented paper

 `->` The Chinese are believed to have invented paper

`@` CT :

`-` People/They/... + say/believe/... + that + S + V

`->` Bđ : `+` It + is + said/believed/..+ ( that ) + S + V

             `+` S + am/is/are + said/believed/.. + to V/to have V-II