6．带有复合宾语的动词变为被动语态时，只能将宾语变为主语，原来的宾补改为主语补足语。原来省略to的不定式作宾补的，被动语态中要用带to的不定式。

I have told them to help you.

→They have been told to help you.

Ⅰ.用所给词的适当形式填空

1．When you get the paper back，pay special attention to what has__been__marked (mark)．

2．Great changes have__taken (take) place in my hometown since 2000.

3．When I reached the station，the tickets had__been__sold (sell) out.

4．In some parts of the world，such as in England，tea is__served (serve) with milk and sugar.

5．As for the English Speaking Competition，when and where it will be held hasn't__been__decided (not decide) yet.

6．Every possible means has__been__tried (try) to stop the bad behaviour，but they don't work at all.

7．Over the past ten years，this town has__been__hit (hit) twice by earthquakes.

8．-Will the lecture be held at 4 o'clock this afternoon?

-No.It has__been__put (put) off till tomorrow afternoon.

Ⅱ.补全句子

1．The__boys__have__been__told__many__times(男孩们已经被多次告知)not to swim in that lake，but it doesn't make any difference.

2．We are glad to be told that Li Tao has__been__admitted__to__Fudan University(已经被复旦大学录取)for his top scores in the Maths Contest.

3．With the help of high technology，more and more new substances have__been__discovered(已被发现)in the past years.

4．When and where to go for the on－salary holiday has__not__been__decided(还没有确定)yet.

5．Though we don't know what was discussed，yet we can feel the topic has__been__changed(已经被改变了)．