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1、被动语态:1. 一般现在时的被动语态为:主+am / is / are (not+过去分词Butter is made from milk.一般过去时的被动语态为:主+was / were +过去分词This house was built 100 years ago.如果要特别强调动作或行为的执行者,句子后面需接by ,译为“被(由”如:W e were woken up by a loud noise . 我们被嘈杂的声音吵醒。2. 现在进行时被动语态的构成为: 主语+is / am / are + being +过去分词Some new houses are being built ne

2、ar the park. 公园附近在建一些房子。3. 现在完成时被动语态的构成为: 主语+have / has +been +过去分词My key has been stolen. My keys have been stolen.4. 一般将来时主语+will +be +过去分词This letter will be written by him tomorrow morning.5.过去将来时主语+would / should + be +过去分词6.过去进行时主语+was / were + being +过去分词7.过去完成时主语+had + been +过去分词8.含有情态动词的被动语

3、态: 主语+情态动词+be+过去分词A note had better be left to him. Teenagers should be allowed to wear their own clothes肯定句:主语+情态动词(can , may , must+be+ 过去分词否定句:主语+情态动词+not + be + 过去分词疑问句:情态动词(Can , May , Must +主语+be+过去分词+.如:W e should allow teenagers to surf the Internet .-Teenagers should be allowed to surf the

4、Internet.Can you use it ? 你会使用它吗?-Can it be used ?2.被动语态的时态是由be的时态决定的,be是什么时态,全句就是什么时态,be动词后面的过去分词不变。归纳:肯定句:主语+be + 过去分词+(by 否定句:主语+be not +过去分词+(by 一般疑问句:Be +主语+过去分词+(by ?特殊疑问句:疑问词+be+主语+过去分词+(by 3. 不能用于被动语态的几种情况(1当主动结构中的宾语是反身代词和相互代词时,不能改为被动语态。He saw himself in the mirror. W e often help each other

5、.(2当谓语是表状态的及物动词时(如have , like , take place , belong to I will have a meeting. 不说A meeting will be had. 应说A meeting will be held .一.用所给动词的适当形式填空1. A lot of water is wasted_ (waste every year. Its a serious problem.2. Now many kinds of work can be done_ (can do by robots.3. English _ (speak as a secon

6、d language in some countries.(1999山西4. Fish may _be caught_ _ (catch in the river. (1999呼和浩特5. A new bridge _ (build over the river last year.6. The children _are_ often _told_ (tell to be careful with fire.7. The accident _ (happen just now.8. Now he _is_ (be asked if the meeting _will be hold_ (ho

7、ld next Friday.二.将下列句子改为被动语态1. Y ou must send your sister to hospital at once.She must _ _ to hospital at once.2. The foreigners cant understand this word. (1999广东This word cant _ _ by the foreigners.3. Many people speak French in China.French _ _ by many people in China.4. Mike drew a picture on th

8、e blackboard.A picture _ _ on the blackboard by Mike.5. Someone took away the boxes yesterday. (1999甘肃The boxes _ _ away by someone yesterday.6. He doesnt clean the meet ing-room every day.The meeting-room _ _ every day.7. Y ou can look up the word in the dictionary.The word can _ _ _ in the diction

9、ary.8. Ill buy my daughter a new watch.A new watch will _ _ _ my daughter.9. The boss made the workers work all day.The workers _were_made to _ _ work all day (by the bos s.10. W e saw some boys playing football behind the house.Some boys _ _ _ football behind the house.三.单项选择1. Paper _ first invent

10、ed in China. (1999昆明A. isB. areC. wasD. were2. Do you like the flower ?-Y es, it _ sweet. (1999内蒙古A. is smellingB. smeltC. is smeltD. smells3. His schoolbag _ away by a woman ten minutes ago. (1998河北A. tookB. had takenC. was takenD. were taken4. It snowed heavily last night. The ground _ thick snow.

11、 (1998武汉A. was covered withB. was filled withC. was made ofD. wasgetting on with5. The light in the room _ before you leave. (1998广州A. must turn offB. will turn offC. are turnedD. must beturned off6. Chinese _ by Miss W ang three years ago. (1998吉林A. was taughtB. is taughtC. was teachedD. were taught7. Y oung trees _ quite often. (1998武汉A. should waterB. should be waterC. should be watered8. _ the kind of question often _ in your class, Ann? (1997山东A. Does; askB. Is; askedC. Has; askedD. Will; ask