“Mr. White, the cup was broken after class. ”
These records were made by John Denver.
be + done
(1)一般现在时：am / is / are + done。
①People grow rice in the south of the country.
→Rice is grown in the south of the country.
②The school doesn’t allow us to enter the chemistry lab without a teacher.
→We are not allowed to enter the chemistry lab without a teacher.
(2)一般过去时：was / were + done。
①They agreed on the building of a new car factory last month.
→The building of a new car factory was agreed on last month.
②The students didn’t forget their lessons easily.
→Their lessons were not easily forgotten.
(3)一般将来时：will + be done。
①They will send cars abroad by sea.
→Cars will be sent abroad by sea.
②She will take care of theses children.
→These children will be taken care of by her.
(4)现在完成时：have / has + been + done。如：
①Someone has told me the sports meeting might be put off.
→I have been told the sports meeting might be put off.
②He has brought his book here.
→His book has been brought here.
(5)含有情态动词的被动语态：情态动词+ be+ done。
①You must hand in your compositions after class.
→Your compositions must be handed in after class.
②He can write a great many letters with the computer.
→A great many letters can be written with the computer by him.