→The bridge was built in 1980.

将    来  shall            shall

will do → will + be + done

He will read the book tomorrow.

→The book will be read tomorrow.

现在完成  have       have

has done → has + been + done

We have delivered the newspaper.

→The newspapers have been delivered (by us).

过去完成  had done → had been done

She had seen the film before she came here.

→The film had been seen before she came here.

将来完成  shall            shall

will have done → will have + been + done

By the end of this term we shall have finished 80 texts.

→By the end of this term 80 texts will have been finished.

现在进行  am            am

is doing → is + being + done

are            are liuxuepaper.com