I have never heard of such a thing before. → Such a thing has never been heard of before.

We must take good care of the children here. → The children must be taken good care of here.

His classmates laughed at him for the foolish mistake. → He was laughed at for the foolish mistake by his classmates.

高考单选题中的"被动语态"

23. - I don't suppose the police know who did it. (2006江苏)

　 - Well, surprisingly they do. A man has been arrested and ________ now.

　A. has been questioned B. is being questioned

　C. is questioning D. has questioned

31.The moment the 28th Olympic Cames_______open, the whole world cheered. (2006福建）

　A.dcelaned B.have been declared C.have declared D.were declared

　12.The construction of the two new railway lines__________by now. (2006陕西）

　A.has completed B.have completed

　C.have been completed D.has been completed

　32. When he turned professional at the age of 11, Mike _____ to become a world champion by his coach and parents. (2006上海）

　A. expected B. was expecting C. was expected D. would be expected

31.It is said that the early European playing-cards_____for entertainment and education. （2006辽宁）

　A.were being designed B.have designed

　C.have been designed D.were designed

Keys: BDDCD