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课件网) Unit 3 Internet Discovering Useful Structures Lead-in 歌词中的语法，你发现了吗？ Goodbye to you my trusted friend 别了朋友，我的挚友 We've know each other since we were nine or ten 我们已相识很久，那时我们还是孩子 Together we've climbed hills and trees 我们曾一起爬过无数山丘、树丛 Learned of love and ABC's 一起学会了爱，还有许多等等 Skinned our hearts and skinned our knees 也曾一起伤过心，一起破过皮 Goodbye my friend it's hard to die 别了，我的朋友，友情是不死的 . Lead-in 歌词中的语法，你发现了吗？ Goodbye to you my trusted friend 别了朋友，我的挚友 We've known each other since we were nine or ten 我们已相识很久，那时我们还是孩子 Together we've climbed hills and trees 我们曾一起爬过无数山丘、树丛 Learned of love and ABC's 一起学会了爱，还有许多等等 Skinned our hearts and skinned our knees 也曾一起伤过心，一起破过皮 Goodbye my friend it's hard to die 别了，我的朋友，友情是不死的. 现在完成时 表示 发生的或 的动作对 造成的 。 现在完成时概念： 过去 已完成 现在 影响或结果 e.g. I have finished the homework. 作业现在已经做完了。 常用的时间状语有： ◆常与不确定的时间状语连用，如: up to now, by now, lately, already, since, ever since, just, yet, before, recently, so far, in the past/last 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 have/has+ done 1.have &has 当主语是 用has; 当主语是 用have。 第三人称单数 其他人称 2.done在现在完成时中叫_____ 除不规则变化外，一般情况加ed 过去分词 语 法 导 学 感知句子，完成方框下的小题 一名敌人被击杀。 An enemy has been slained. 我方队友被击杀。 An ally has been slained. 你被击杀了。 You have been slained. 1.以上句子中所使用的时态和语态是 。 2.现在完成时的被动语态的构成为： 。 现在完成时的被动语态 have/has been＋过去分词 现在完成时与现在完成时被动语态的动词形式 找出下面句子的谓语结构，哪些是主动？哪些是被动？ Jan’s life has been greatly improved by the Internet. The Internet has greatly improved Jan’s life. People have written much about the wonders of the World Wide Web. Much has been written about the wonders of the World Wide Web. 被动 主动 主动 被动 现在完成时谓语结构 主动 被动 have/has done have/has been done ......已经被...... 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...？ A new network has been set up. 一个新的网络已经建立起来了。 To Tom’s disappointment，his novel has not been published. 让汤姆失望的是，他的小说还没有被出版。 练习 Tom has invited the singer already. The singer has been invited (by Tom) already. The singer has not been invited (by Tom) yet. Has the singer been invited (by Tom) yet Who has been invited (by Tom) 被动 否定 一般疑问 对宾语提问 1. The building has set up for several years. 2. The windows have been broke. 3. A terrible thing has been happened to her. 4. Jim has caught by the police. been broken been Present perfect passive voice 改错： 即学即练 1. I ... ...
