1. 强调动作的承受者：

Frank was hit by a car.

A new idea has been suggested.

2. 说话者不知道动作的执行者，或者认为没有必要指出：

This bridge was built in 1700.

The house is being repaired.

3. 说话者希望所说的内容显得更加客观，避免就一些自己不太肯定的事表态：

此类通常为表示\"据说\"或\"相信\" 的词组，基本上由believe, consider, declare, expect, feel , report, say, see, suppose, think, understand等组成，如： It is said that...据说；It is reported that... 据报道；It is believed that...　大家相信；It is hoped that...　大家希望； It is well known that... 众所周知　　

It is said that Japan's industrial progress after the war was very remarkable.

1. (2015北京)--Did you enjoy the party?

--Yes,we___ by our hosts.

A.were treated B.would be treated C.treated D.had treated

2. (2015重庆) In my hometown, there is always a harvest supper for the farmers after all the wheat____ cut.

A. will have been B. will be C. Was D. has been

3. (2015天津) Despite the previous rounds of talks, no agreement______ so far by the two sides.

A. has been reached B. was reached C. will reach D. will have reached

4. (2015四川) More expressways in Sichuan soon to promote the local economy.

A. are being built B. will be built C. have been built D. had been built

5. (2015福建) To my delight, I from hundreds of applicants to attend the opening ceremony.

A. was chosen B. was being chosen C. would choose D. had chosen

基础演练

1. This coastal area _________ a national wildlife reserve last year.

A. was named B. named C. is named D. names

2. The discovery of gold in Australia led thousands to believe that a fortune _________.

A. is made B. would make C. was to be made D. had made

3. The church tower which _________ will be open to tourists soon. The work is almost finished.

A. has restored B. has been restored

C. is restoring D. is being restored

4. In the spoken English of some areas in the US, the "r" sounds at the end of the words _________.

A. are dropped B. drop C. are being dropped D. have dropped

5. It is reported that many a new house _________ at present in the disaster area.

A. are being built B. were being built