◎过去完成时概念：表示过去的过去过去完成时：即过去的过去所发生的事情！其构成是：主语＋had＋过去分词。
用法：①表示过去某一时刻之前已经完成的动作，常与由by，before引导的时间状语连用。
We had learned 5000 words by the end of last month.到上个月底为止我们已经学了五千个单词。
I had finished the composition before supper.晚饭前我就已经把作文写完了。
②表示过去某一动作之前已经完成的动作，常与由when，before等连词引导的时间状语从句连用。
When I woke up it had already stopped raining.我醒来的时候雨就已经停了。
I hadn’t learned any English before I came here.我来这儿之前没学过英语。
③用于宾语从句或间接引语中I wondered who had taken the umbrella without permission.我想知道谁不经允许就把雨伞拿去。
He told me that he had passed the exam.他告诉我他已通过考试。
被动语态熟记结构被动语态的结构为“助动词be＋及物动词的过去分词（p. p）”。
被动语态的不同时态是通过be的时态变化来表示的，其人称和数方面应与主语保持一致。
其具体变化为：一般现在时：am／is／are＋p. p.—Look! What a nice garden!—Yes. It every day.A. is cleanedB. has been cleanedC. is being cleanedD. was cleaned（选A。
考查一般现在时的被动语态）（泰安市）一般过去时：was／were＋p. p.①—Who’s the little boy in the photo, Susan?—It’s me. This photo ten years ago.A. takesB. is takenC. tookD. was taken（选D。
考查一般过去时的被动语态）（北京）②I’m sure the telephone before the car.A. inventedB. is inventedC. was inventedD. is inventing（选C。
考查一般过去时的被动语态）（天津）③The telephone by Bell in 1876.A. inventB. inventsC. was inventingD. was invented（选D。
考查一般过去时的被动语态）（吉林）④Professor Yi Zhongtian to the Talk Show on CCTV -1 last weekend.A. invitesB. invitedC. was invited（选C。
考查一般过去时的被动语态）（山西）⑤—How clean the window is!—Yes. It just now.A. has been cleanedB. was cleanedC. is cleanedD. will be cleaned（选B。
考查一般过去时的被动语态）（盐城）一般将来时：shall ／will be ＋p. p.—People say the subway building in Harbin in a few years.—Sounds . I have never seen it before.A. will finish, interestingB. is finished, interestedC. will be finished, interesting（选C。
考查一般将来时的被动语态）（哈尔滨）现在完成时：have ／has been ＋p. p.现在进行时：am／is／are＋being＋p. p.过去将来时：should ／would be ＋p. p.含情态动词的被动结构：情态动词＋be＋p. p.①—Some of the plastic bags can’t after June 1.—Yes, people will use environmental bags instead.A. useB. be useC. be usedD. are used（选C。
考查含情态动词的被动语态）（湖北省咸宁市）②—There is a lot of wind in North China.—Well, more trees every year to stop the wind.A. must be plantedB. can plantedC. should planted（选A。
考查含情态动词的被动语态）（四川省自贡市）明确用法被动语态常用于以下两种情况：1. 不知道谁是动作的执行者，或者没有必要指出谁是动作的执行者；2. 强调动作的承受者。
例如：这棵树是那个男孩弄断的。
The tree ______ ______ by that boy.（填was broken）熟练转换将主动语态变为被动语态的基本方法为：将主动语态的宾语作为被动语态的主语；谓语动词变为“be＋及物动词的过去分词”，并通过be的变化来表达出不同的时态；③主动语态的主语变为介词by的宾语，组成介词短语放在被动结构中的谓语动词之后。
（有时by短语可以省略）。
例如：①The terrible earthquake destroyed thousands of houses in that area. （上海市）Thousands of houses in that area by the terrible earthquake.②More and more foreigners speak Chinese in the world now. （重庆市）Chinese by more and more foreigners in the world now.③Dangerous driving causes many accidents. （山东省临沂市）Many accidents by dangerous driving.注意特例将主动语态变为被动语态应注意以下几个特殊情况：A. 带有双宾语的动词变为被动语态时，可以把其中一个宾语变为被动语态的主语，若将直接宾语(sth.)变为主语，需根据习惯在原间接宾语前加上介词to或for。
用to的常见词有：give, show, send, lend, pass, pay, teach, throw, take, bring etc. 用for的常见词有：make, choose, sing, play, draw, save, buy, get, leave, cook etc.eg. 1. Mary gave him some books.He was given some books by Mary.Some books were given to him by Mary.2. Her father bought her a new bike.She was bought a new bike by her father.A new bike was bought for her by her father.B. 带复合宾语（宾语+宾语补足语）的动词变为被动语态时，只能将宾语变为被动语态的主语，宾语补足语不可变为主语。
eg. 1. We call him Gina.He is called Gina (by us).2. They made me happy.I was made happy( by them).3. He asked me to come here.I was asked to come here (by him)C. 在see, let, make, hear, watch etc.动词之后，作宾语补足语的动词不定式不带to，但在变为被动语态时，则一定要加上to。
eg. 1. We saw them play football just now.They were seen to play football just now.2. We often hear her sing in English.She is often heard to sing in English.【练一练】1. The boy _ __ streets without pay in the old days.A. was made to cleanB. made cleanC. made to cleanD. was made clean2. These children ___ _ dance.A. were seen toB. were seen forC. were seenD. saw to3.The monkey was seen ____ _ off the tree.A. jumpB. jumpsC. jumpedD. to jumpD. 在某些“不及物动词+介词/副词”(相当于及物动词)的句子中，变被动语态时，注意不要丢掉介词/副词。
eg. 1. People often talk about that film.That film is often talked about.2. We should speak to the old people politely.The old people should be spoken to politely.【练一练】1. Old people must be looked after well and _ __ politely.A. speak toB. spokenC. speakD. spoken to2. Old people must _ __.A. look after wellB. be looked well afterC. looked well afterD. be looked after well3. Newly-born babies _ _ in hospital.A. are taken good careB. are taken good care ofC. take good care ofD. take good careE. 主动形式表示被动意义的词：1）某些感官动词:look, smell, taste , feel, wear ,sound etc.2）某些及物动词+副词：wash, write, sell, read, open, cut, shut, keep etc.eg. 1. This coat feels soft.2. The pen writes smoothly.3. That book sells well.4. This kind of shirt washes easily.【练一练】1. The apple _ __ very sweet.A. is tastedB. tasteC. tastesD. are tasting2. You _ more beautiful in the light blue shirt.A. seeB. watchC. lookD. look atF. 只有及物动词(vt.)才有被动语态，不及物动词(vi.)没有被动语态，因为它不带宾语。