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课件网) Unit3 The Internet Discovering Useful Structure 人教 必修第二册 Know the form, the meaning and the function of the present perfect passive voice; Use the present perfect passive voice to do some exercises; Talk about the things that have been done. Learning objectives Appreciate a poem Look at the way your face has been washed Look at the way your teeth have been brushed Look at the way your shoes have been cleaned You’d better do them again. Look at the way the flowers have been planted Look at the way the grass has been cut Look at the way the paths have been swept I hope that you’ll come here again. Lead in What’s the common verb form of these sentences the present perfect passive voice现在完成时被动语态 Activity 1 Jan’s life has been greatly improved by the Internet. Much has been written about the wonders of the World Wide Web. The Internet has greatly improved Jan’s life. People have written much about the wonders of the World Wide Web. How do we form the present perfect passive voice Fill in the blank. have/has been + v -ed Read the pairs of sentences. Underline and compare the different verb forms. 1 The research has been done successfully. 2 The computer has been used for 3 years. 3 The dirty clothes have been cleaned. 现在完成时的被动语态 形式 意义 have/has+been+done 已经被...了 Activity 2 含义：表示过去发生的被动动作现在已经完成或仍将持续, 强调对现在的影响。主语是动作的承受者。 Underline the grammar structure and fill in the form below 1 We have been told the time of the lecture. 2 The date has not been decided yet. 3 Have the lost keys been found 4 How long has his homework been finished 现在完成时的被动语态 肯定式 否定式 一般疑问句式 特殊疑问句式 have/has+been +done have/has+not+been+done have/has+主语+been+done 特殊疑问词+have/has+主语+been+done Activity 3 Understand the underlined parts and fill in the form below eg The bike has not been repaired yet. I have already been introduced to Mr. Smith. 现在完成时的被动语态同它的主动语态一样，强调过去的动作对现在的影响或结果，主语和谓语之间为被动关系(already, yet, just, ever, never,before，recently...) The usage of the present perfect passive voice eg This class have been taught by Mr. Brown for two years. Rowling’s novels have been translated into many foreign languages so far. 表示一个被动的动作或状态开始于过去，持续到现在，并可能持续下去 (for+一段时间；since+过去的某个时间/时间状语从句; so far; up to/till/by now; these days; over/in/during the past/last years). Great changes _____ (take) place in my hometown in the past 10 years. 注意：不及物动词和不及物动词短语，没有被动语态，rise, happen, take place, break out, die, disappear... have taken place 1. The machine _____ (repair) already. 2. The machine _____ (repair) yesterday. has been repaired was repaired 一般过去时的被动语态所表示的动作或状态只说明动作发生在过去,与现在的情况没有联系，而现在完成时的被动语态则强调与现在的情况有联系。 注意事项一 短语动词不能分割,laugh ... ...
