UNIT 2 SectionIII Discovering Useful Structures 课件-【大单元教学】高一英语同步备课系列（人教版2019必修第二册）

Unit 2 Wildlife Protection Period 3 Discovering Useful Structures 1 When the buying stops, the killing can too. —WildAid 1.learn about the form,meaning and usage of the present continuous passive voice; 2.talk about how to protect the wildlife using the targeted grammar; 3.Learn to use present continuous passive voice to describe the endangered animals’ conditions and measures taken to help them to arouse the awareness of wildlife protection. Learning Objectives: 3 What can you see in the photo? -I can see a lovely panda. - The zoo keeper is attending YY. -YY is attended well by the zoo keeper. 思考：如何说“目前YY很好地被饲养员照顾着”？ 表示“某人/事此时此刻正在被…”，主语是动作的承受者, 表示说话时或现阶段某个被动的动作正在进行。 现在进行时的构成 1. We are having an English class. 2. I am reading Jane Eyre these days. 现在进行时的构成： 主语+ be(am/is/was/are/were) +doing Review 1.此时此刻 2.现阶段 被动语态的构成 1. The book was written by Lu Xun. 2. The classrooms are cleaned by students every day. 3. This maths problem can be worked out by little Tom. 被动语态的构成： 主语+ be(am/is/was/are/were) +done Review 一、观察例句，归纳用法。 1.A lot of antelopes are being hunted illegally. 2.Animals habitats are not being destroyed as humans search for more resources. 3.Is more land also being used for growing crops? 4.How many species are being driven to extinction? 1.如句(1):现在进行时的被动语态肯定形式为:主语+ ________________________。 2．如句(2):现在进行时的被动语态否定形式为:主语+ _____________________。 3．如句(3):现在进行时的被动语态的一般疑问句式为：______________________________。 4．如句(4):现在进行时的被动语态的特殊疑问句式为：________________________________________。 is/am/are being done is/am/are not being done is/am/are＋主语＋being done 疑问词＋is/am/are+主语＋being done 现在进行时的被动语态构成 形式 结构 肯定式 主语＋am/is/are＋being done. 否定式 主语＋am/is/are not＋being done. 一般疑问式 am/is/are＋主语＋being done？ 特殊疑问式 疑问词＋am/is/are＋主语+being done？ 3.主动语态变被动语态的原则 “三变” 例：They are building nine parks. 原句主语 by的宾语 宾语 主语 谓语由主动 被动 “三不变” 原句意思不变 原句时态不变