(
课件网) Unit 3 The Internet Discovering useful structures To learn the present perfect passive voice To use the present perfect passive voice to do some exercises and talk about something has been done To read a poem and learn to write your own poem Step1 Lead in Active and passive voices 单击输入您的封面副标题 Lead-in Step2 Presentation 主语 + have/ has + V-ed (过去分词done) 助动词,无意义 一、现在完成时的结构 Winter has already come . present(now) future past 过去的动作一直持续到现在 过去的动作对现在产生影响 The Present Perfect Tense 肯定式： 主语 + have/has+ been + done(V-过去分词) 否定式： 主语 + have/has+ not + been + done... 一般疑问句： Have/Has + 主语 + been + done...？ 特殊疑问句： 疑问词 + have/has + 主语 + been + done...？ 现在完成时的被动语态的结构 常与现在完成时连用的时间状语有： already已经 yet 已经 ever 曾经 recently/lately 最近 since then 从那时起 ever since 自那以来 since 1990 从1990年起 since +一般过去时的句子 so far/up till now 迄今为止 by now 到现在为止 for a long time 很长一段时间 in recent years 在最近几年里 in/during/over the past/last years 在过去的几年里 Read the pairs of sentences. Underline and compare the different verb forms. Jan’s life has been greatly improved by the Internet. The Internet has greatly improved Jan’s life. Much has been written about the wonders of the World Wide Web. People have written much about the wonders of the World Wide Web. Verb form Active Passive have / has + been + v-ed How do we form the present perfect passive voice Fill in the blank. have /has + v-ed _____ 表示 “某人/某事/某物已经被…” Change the sentences into the present perfect passive voice. They’ve built a kind of new PC with more functions. A kind of new PC has been built with more functions. n. 功能；作用 vi. 起作用；运转 主动语态变被动语态的原则 “三变” 原句主语 by的宾语 宾语 主语 谓语由主动 被动 n. 电池 vt. 确认；使确信 1. I have downloaded the software to help my phone battery last longer. 2. Someone has lost an identity card. 3. Have you confirmed the Wi-Fi password The software has been downloaded to help my phone battery last longer. An identity card has been lost. Has the Wi-Fi password been confirmed 4. Have you pressed the button yet to copy the file 5. Has anyone made a comment about the online database Has the button been pressed yet to copy the file Has a/any comment been made about the online database n. 文件, 档案 Underline the use of the present perfect passive voice in the following poem. Then fill in the chart below. 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. Step4 Summary SUMMMARY 现在完成时的被动语态 含义 结构 表示过去发生的被动动作现在已经完 成或仍将持续, 强调 ... ...
