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1、被动语态: be+过去分词，be有时态变化有时态变化一般说来，当强调动作承受者，不必说出执行者或含糊不清的执行者时，多用被动语态。解析：1.动作的执行者不知道是谁或难以说明时用被动语态 2.当动作的承受者比起动作的执行者来说更能引起人们的关心而需要加以强调时，要用被动语态。注：含有双宾语的句子，主动句中的间接宾语或者直接宾语都可变为被动语态中的主语，另一个保留不变。变为主语的若是主动句中的直接宾语（物），间接宾语前则需加介词to 或for 。句型：主语句型：主语+be +过去分词过去分词(+by+动作的发出者）动作的发出者）被动语态的基本结构1.一般现在时：am/is/are+过去分词2.一般
2、过去时: was/were + 过去分词3.现在进行时: am/is/are+ being +过去分词4.过去进行时: was/were+ being + 过去分词5.一般将来时: will +be + 过去分词 6.过去将来时: would/should +be +过去分词7.现在完成时: have/has + been +过去分词8.过去完成时: had +been+ 过去分词9.情态动词的被动语态: 情态动词+ be +过去分词注：将来进行时无被动语态，现在完成进行时也无。1.Trees are planted every year. 2.The story was told by hi
3、m.3. Many birds were killed last year. 4.The road is being repaired. 5.The new house was being painted when I got.6.The problem will be discussed tomorrow. 7.He said the picture would be put up soon.8.The work has been finished. 9.He told me that the work had been finished. 10.The problem must be so
4、lved soon.11.Children should be taught to love animals. 被动语态的基本结构（be+过去分词）1.一般现在时：am/is/are+过去分词 Trees are planted every year. 2.一般过去时: was/were + 过去分词 The story was told by him. Many birds were killed last year. 3. 现在进行时 am/is/are+ being +过去分词 The road is being repaired. 4.过去进行时 was/were+ being + 过
5、去分词 The new house was being painted when I got home. 5.一般将来时： will +be + 过去分词 The problem will be discussed tomorrow6.过去将来时：would/should +be +过去分词 He said that the Christmas tree would be put up soon7.现在完成时： have/has + been +过去分词 The work has been finished. 8.过去完成时： had +been+ 过去分词 He told me that t
6、he work had been finished 9.情态动词的被动语态： 情态动词+ be +过去分词 The problem must be solved soon.Children should be taught to love animals. 1.Our classroom is cleaned every day.2.I am asked to study hard.3.Knives are used for cutting things. 4.A new shop was built last year . 5.Dinosaur eggs were laid long lon
7、g ago. 6.This book has been translated into many languages.7.Many man-made satellites have been sent up into space by many countries.8.A new hospital will be built in our city.9.Many more trees will be planted next year.1.Young trees must be watered often.Your mistakes should be corrected right now.
8、The door may be locked inside.Your homework can be handed in tomorrow.My bike is being repaired by Tom now. Trees are being planted over there by them.不定式的被动式：to + be + vt.的过去分词 There are two books to be read.There are twenty more trees to be planted.怎样把主动语态改成被动语态? 1.先找出谓语动词；2.再找出谓语动词后的宾语；3.把宾语用作被动语
9、态中的主语；4.注意人称、时态和数的变化。1. Bruce writes a letter every week. A letter is written by Bruce every week.2. Li Lei mended the broken bike this morning. The broken bike was mended by Li Lei this morning.3.He has written two novels so far.Two novels have been written by him so far.4.They will plant ten trees
10、 tomorrow.Ten trees will be planted by them tomorrow.5.Lucy is writing a letter now.A letter is being written by Lucy now.6.You must lock the door when you leave.The door must be locked when you leave. We believe him. He is believed by us.He bought his children some pens. Some pens were bought for h
11、is children by him.Everyone will know the truth soon . The truth will be known by everyone.I did not say that we would change the equipment.that the equipment would be changed.Mary is making a doll. A doll is being made by Mary.They were carrying the hurt player. The hurt player was being carried by them .He has received the letter.The letter has been received by him.They had built ten bridges. Ten bridges had been built by them
