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1、主动语态变被动语态的方法1. 基本方法将主动语态的宾语变为被动语态的主语，将主动谓语变为被动谓语(be+过去分词)，将主动语态的主语变为by短语(在被动句中用作状语)：He stole our money.Our money was stolen by him.【注】(1)若不强调动词执行者，被动语态中的by短语通常可以省略：The house was built in 1978. 这座房子是1978年建的。(2) 在转变语态时，要注意保持两种语态时态的一致性：The students will study the problem.The problem will be studied by
2、the students.A friend of ours is repairing the roof.The roof is being repaired by a friend of ours.2. 双宾动词的被动语态双宾动词即指带双宾语的动词，它们在变为被动语态时，有以下两种情形值得注意：(1) 有些双宾动词(如award, buy, give, leave, lend, offer, pay, show, teach, tell等)在变为被动语态时，既可把间接宾语(指人)变为被动语态的主语，而把直接宾语(指事物)保留下来(称为保留宾语)，也可把直接宾语(指事物)变为被动语态的主语，而把
3、间接宾语改为介词to 或for引起的状语(到底用to还是for，与所搭配的动词有关)。比较：He gave her some money. 他给她一些钱。 She was given some money. / Some money was given to him.He bought her a watch. 他给她买了一快表。 A watch was bought for her. / She was bought a watch. (2) 有些双宾动词(如bring, do, make, pass, sell, send, sing, write等)通常用直接宾语(指事物)作被动语态的主
4、语，而将间接宾语用作保留宾语(其前根据情况用介词to或for)：Father made me a doll. A doll was made for me. He wrote her a letter. A letter was written to her. (3) 有些双宾动词(如answer, deny, envy, refuse, save, spare等)通常用间接宾语(指人)作被动语态的主语，而将直接宾语用作保留宾语：He answered me that question. I was answered that question by him.3. 含有情态动词的被动形式若主动
5、语态中谓语含有情态动词，在相应的被动语态中通常应保留该情态动词，其结构为“情态动词+be(或be的适当时态形式)+过去分词”：Everyone must know this. This must be known by everyone.请看以下带情态动词被动句实例：This cant be done in a short time. 这不是短期内可以完成的。She may have been sent to work elsewhere. 她可能被派到别处工作去了。The door must have been locked by my wife. 门一定是我妻子锁的。The environ
6、ment should be improved. 环境应当改善。The second point neednt be discussed today. 第二点今天不必讨论。8种常用时态的被动语态由“助动词be + 动词的过去分词”构成。助动词be 有时态、人称和数的变化。(1) 一般现在时：am/is/are +过去分词。如：Rice is grown in south China. 华南种植水稻。(2) 一般过去时：was/were+过去分词。如：The glass was broken yesterday. 这块玻璃是昨天打烂的。(3) 现在进行时：am/is/are being +过去分
7、词。如：The project is being carried out. 这个计划正在执行中。(4) 过去进行时：was/were/being +过去分词。如：This road was being built this time last year. 这条路去年这个时候还在修建。(5) 一般将来时：will be +过去分词。如：The cars will be sent abroad by sea. 这些汽车将由水路运往国外。(6) 过去将来时：would be +过去分词。如：The manager said the project would be completed by the
8、end of the year. 经理说这个工程在年底前将会完成。(7) 现在完成时：have/has been +过去分词。如：This novel has been translated into several languages. 这本小说已被译成了几种语言。(8) 过去完在时：had been +过去分词。如：When I got to the theatre, I found the tickets had already been sold out. 我到达剧院时，发现票已卖完了。使用被动语态“六注意”一要注意被动语态的不同时态被动语态由“be+过去分词”，其中的助动词 be 根
9、据情况可使用各种不同时态。如：She is respected by everyone. 她受到大家的尊重。(一般现在时)The book will be reprinted soon. 这本书很快会重印。(一般将来时)The road is being repaired. 路正在修整。(现在进行时)They have been given a warning. 他们受到警告。(现在完成时)二要注意带情态动词的被动语态该结构的基本形式为“情态动词+be(或be的适当形式)+过去分词”。这类结构非常有可能作为语境题出现在考卷中。如：The rules must be obeyed. 这些规章制度
10、必须遵守。They shouldnt have been told about it. 这事是不应当告诉他们的。三要注意非谓语动词的被动语态1. 不定式一般式的被动语态。由“to be+过去分词”构成。如：She asked to be given some work to do. 她要求给她一些工作做。He was the last person to be asked to speak. 他是最后被邀请发言的人。2. 不定式完成式的被动语态。由“to have been+过去分词”构成。如：I should like to have been told the result earlier
11、. 我本想让人把结果早点告诉我的。3. 现在分词一般式的被动语态。由“being+过去分词”构成。如：I saw him being taken away. 我看见有人把他带走了。Being protected by a wall, he felt quite safe. 有墙作保护，他感到很安全。4. 现在分词完成式的被动语态。由“having been+过去分词”构成。如：Having been invited to speak, Ill start making preparations tomorrow. 因为邀请我去讲话，我明天就得做准备。The subject having bee
12、n opened，he had to go on with it. 话题已经开始了，他不得不谈下去。5. 动名词一般式的被动语态。由“being+过去分词”构成。如：She likes being looked at. 她喜欢被人瞧。He hates being made a fool of. 他讨厌被别人愚弄。This question is far from being settled. 这个问题远没解决。6. 动名词完成式的被动语态。由“having been+过去分词”构成。如：Jennys not having been trained as a dancer is her one
13、regret. 杰妮没受过舞蹈的专业训练是她感到遗憾的事。After having been instructed to drive out of town, I began to acquire confidence. 在接到把车开出城的指令后，我开始信心十足了。注：过去分词没有被动式，因为它本身可以表示被动意义。如：The door remained locked. 门仍然锁着。四要注意“get+过去分词”构成的被动语态英语被动语态通常由“助动词be+过去分词”构成，有时也可用“get+过去分词”构成。如：James got beaten last night. 詹姆斯昨晚被打了。How
14、did that window get opened? 那个窗户是如何打开的？但总的说来，用get构成的被动语态不如用be构成的被动语态常见，尤其是在含有施动者的by短语时，用get构成被动语态更是少见。不过有时用be+过去分词构成被动语态构成误解时，人们可能会选get+过去分词来避免这种误解：The window was broken. 窗户破了(表状态)。/ 窗户被打破了(表动作)The window got broken. 窗户被打破了(表动作)五要注意哪些动词不用于被动语态1. 不及物动词没有被动语态。因为不及物动词没有宾语，所以若将其用于被动语态则没有主语，故不能用于被动语态。但是值
15、得注意的是，有些英语中的不及物动词，译成汉语时却可能是“及物”的，很容易出错，这类动词如：take place(发生)，happen(发生)，come about(发生)，break out(爆发)，appear(出现)，disappear(消失)，last(持续)，arise(出现，发生)等：Influenza usually breaks out in winter. 流感通常发生在冬季。Use this money when the need arises. 有需要时就使用这笔钱。2. 英语中的静态动词(如have, lack, fit, hold, suit, resemble 等)通
16、常不用于被动语态：My shoes dont fit me. 我的鞋不合适。The young man lacks experience. 这个年轻人缺乏经验。六要注意两类被动句型的相互转换英语中有一种主动句可以转换成两种被动句型，它们通常是一些表示客观说明的句子。如：People believed that she is honest. 大家相信她是诚实的。Its believed that she is honest. 大家相信她是诚实的。She is believed to be honest. 大家相信她是诚实的。比较上面两类被动句型可以发现，一类是“it+be+过去分词+that从句
17、”，另一类则是“主语+be+过去分词+不定式”(其中的“主语”为前一类句型中that从句中的主语)，通常可用于这两类被动句型的动词有assume, believe, expect, fear, feel, know, presume, report, say, suppose, think, understand等，比较(同时注意其中时态和动词形式的变化)：Its known that he was a good singer. / He is known to have been a good singer. 大家知道他曾是位优秀的歌手。Its reported that he was driving fast. / He is reported to have been driving fast. 据说他当时车开得很快。