英语课件必修2 unit3 Computers P4 Grammar.ppt

(1)［误］Many new buildings been built since 1980. ［正］Many new buildings have been built since 1980. 分析: 谓语部分结构不全, 时态部分不完整。 试分析： (2)［误］Something bad has been happened to him. ［正］Something bad has happened to him. 分析: 被动语态误用。happen为不及物动 词，不及物动词没有被动语态。 (3)［误］I have introduced to Mr. Smith. ［正］I have been introduced to Mr. Smith (by Mr. Wang). 分析: introduce为及物动词，I是introduce 的承受者。 (4)［误］The door has been opened of itself. ［正］The door has opened of itself. 分析: 有些动词如open，break，drop等既可以作及物动词，又可以作不及物动词，若不强调谁是动作的发出者，我们通常用主动语态。of itself意思是“自动地”，因此，此句不可用被动语态。 Review 现在完成时的被动语态 肯定结构： have / has + been + done 否定结构： have / has + not + been + done Individual activity 1. When and where to go for the on- salary holiday ______ yet. A. are not decided B. have not been decided C. is not being decided D. has not been decided Quiz I: Multiple choice. 2. Every possible means ______ to prevent the air pollution, but the sky is still not clear. A. is used B. are used C. has been used D. have been used 3. All the preparations for the task ______ and we’re ready to start. A. completed B. complete C. had been completed D. have been completed * “碰壁点拨式”教学法是素质教育的一种方式，这种教学法的基本模式是：编拟题组—练中碰壁—讲评点拨—巩固消化。该教学法以问题为载体，以训练为主线，目标导控，问题教学，先练后讲，碰壁点拨，反馈矫正。增强了学习的方向性、选择性及目标性，使学生在克服困难消除障碍的过程中发展自己的观察力、想象力和思维能力，使他们的智慧升华，创造思维得以开发。 * The Present Perfect Passive Voice Unit 3 Grammar 初中课本给大家介绍了被动语态的构成和用法、一般现在时和一般过去时的被动语态的构成，以及含有情态动词的被动语态，上一个单元我们又学习了将来时的被动语态，这里我们将继续介绍有关被动语态的知识。 Objective To learn and use the present perfect passive voice. 语法讲解建议采用归纳法，如尽可能多的呈现一些相关例句，或可让学生从已学课文中找相应例句，引导学生试着从所观察到的语言现象中总结出语言规则和语法规律。 Look at the following sentences. 1. An opinion is what someone believes is true but has not been proved. (必修2) 2. So even the olive wreath has bee