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课件网) Unit 3 The Internet Discovering Useful Structures 1.Much has been written about the wonders of the World Wide Web．2.But the Internet has done much more for people than simply make life more convenient．3.Many people have been helped by the club．4.She no longer feels lonely, and her company has become quite successful．5.Today I thought I’d blog about a question that has been asked many times—how do you stay safe online and avoid bad experiences on the Internet 语法感知 现在完成时 定义 结构 2 表示 发生的或 的动作对 造成的 。 Past present 过去 已完成 现在 影响或结果 e.g. 1. I have just opened the door. (The door is not closed now.） 现在完成时概念2： 常用的时间状语有： ◆常与不确定的时间状语连用，如: these days, up to now, by now, lately, already, never, ever, just, yet, before, recently, so far, in the past few years等,表示“到目前为止”所发生的动作. 现在完成时谓语动词的构成 1 have / has 和以前一样选择：当主语是 用 用has , _____用have 第三人称单数 其他人称 2 done在现在完成时中叫 ，原型是do/does。 过去分词 have/has+ done 现在完成时的基本句型 现在完成时 (Active Voice) 肯定式 have/has done 否定式 have/has not done 一般疑问句 have/has + 主 + done？ 特殊疑问句 疑问词- have/has + 主 + done？ 现在完成时+被动语态=？ Discovering 现在完成时被动语态 (Passive Voice) 肯定式 have/has been done 否定式 have/has not been done 一般疑问句 have/has + 主语 + been done 特殊疑问句 特殊疑问词+have/has+主语+been done 数 1.The party_____(have) been planned since the New Year. 2.Much _____(have) been mentioned about the theme. 3.The questions about if she invited her friends _____(have) been answered in public. 4.A number of people from HongKong_____(have) been caught in this accident. has has have have 一、现在完成时的被动语态的常用句式 肯定式 主语＋have/has been done... 否定式 主语＋have/has not been done... 一般疑问式 Have/Has＋主语＋been done...？ 特殊疑问式 疑问词＋have/has＋主语＋been done...？ Has his bike been repaired 他的自行车修好了吗？ How many residents have been invited to the conference？ 有多少居民受到了参会邀请？ Key points:请认准以下常与现在完成时连用的时间状语 1.已经 （常用在肯定句） _____ 2.已经 （疑问、否定句）_____ 3.最近 _____ 4.从那时起 _____ 5.自那以来_____ 6.曾经 _____ 7.迄今为止_____ 8.到现在为止_____ 9.很长一段时间_____ 10.在最近几年里_____ 11.在过去的几年里_____ 12.在过去的三十年里_____ already recently/lately since then yet ever since ever 常用 “have ever” so far；up to now by now for a long (period of) time in recent years in/during/over the past years in/during/over the three decades Tip① 由borrow，finish，begin，start，buy，marry，open，join, die等词构成的现在完成时的被动语态,不能与表示段时间的状语，如for four days, how long等连用，而要改换动词或者是时态。 判断正误: * He has died for 3 years. （ ） * He died 3 years ago. （ ） V X Tip② 短语动词不能分割，而且不能省略短语动词中的介词或副词。 判断正误: *The patient has been taken good care. （ ） *The patient has been take ... ...
