3. Every possible means 　　　, but none prove successful.

　 A. has tried　　　　 B. has been tried　　　 C. is being tried　 D. tried

2. I'm sorry, sir. Your recorder isn't ready yet. It _____ in the factory.

　 A. is being repaired　 B. is repaired　　 C. has been repaired D. hasn't repaired

1. An exhibition of paintings ____ at the museum next week.

　 A. are to be held　　　 B. is to be held　　　　 C. are holding D. will hold

6. 感官动词或使役动词使用省略to的动词不定式，主动语态中不带to ，但变为被动语态时，须加上to 。

　例：make somebody do something→somebody+ be +made to do something

　see somebody do something→somebody +be +seen to do something

　A girl saw my wallet drop when she passed by.→My wallet was seen to drop by a girl when she passed by.

The boss made the little boy do heavy work.→The little boy was made to do heavy work by the boss.

被动语态练习

5.　 据说类动词的：

say, consider, think, report, know, believe, suggest, understand, hope, etc.

如：It is said that… There is said to be… Sth./Sb. is said to… .

4. 无被动语态的情况

1)不及物动词无被动.

2)系动词无被动语态：

appear, be, become, fall, feel, get, grow, keep, look, remain, seem, smell, sound, stay, taste, turn 如:　It sounds good .

3)谓语动词是以下及物动词时，无被动。

happen, belong to, suit, fit(适合), have, let, join, fall, last(延长),cost(花费), marry, own, notice,　 watch

break out(爆发)appear, burst out(迸发)，hold(容纳)，lack(缺乏)，agree with(同意), take part in, succeed in, suffer from, arrive in/at

如: the book cost me 20 yuan.

3.主动语态中的宾语是从句，变成被动时使用形式替代词it.

如：We know that Britain is an island country.

It's known that Britain is an island country.

The teacher said that this book has been translated into several languages

It's said that this book has been translated into several languages

2.有些词如want, need, require和 be worth后面，v-ing形式为主动，意义为被动。

如：The room needs/wants/requires cleaning.

The book is worth reading.

1. 主动形式表被动

① 感官动词：sound, taste, smell, feel, look, seem等主语是物时；

Eg. Good medicine tastes bitter to the mouth.良药苦口。

② 一些vi主动形式表被动含义

open, close, shut, read, write, translate, wash, clean, lock, sell, wear, cut, cook, eat, weigh, drink, pay, draw, answer, learn, etc.

Eg. The goods sells well.

Eg. The door can't open. 　

③不定式to blame, to let(出租)作表语时，主动形式表被动含义

Eg. He is to blame for the matter.

House [Room] is to Let. 房屋[房间]招租。

12. _______ twentieth century organizations were formed _____________ groups that do not __________ to speak for ___________.