Unit 2 Wildlife Protection Discovering Useful Structures 被动语态公开课课件-2023-2024学年高一英语人教版（2019）必修第二册

Unit 2 Wildlife Protection -The Present Continuous Passive Voice Discovering Useful Structure 1 The Present Continuous Passive Voice 现在进行时 被动语态 2 1 结构:am/is/are + doing 1. Tom is doing his homework now. 3. I am leaving for shanghai next week. 4.She is always lying. 2. They are building a highway these days. 一、The Present Continuous Tense 现在进行时 此时此刻正在进行的动作 表示现阶段在做的动作 表示按计划将要发生的动作 Activity1: Warming-up-Let’s review! 与副词always/often/contiually连用表某种感情色彩 3 1. African elephants are being hunted. 2.What is being done to help them? 3.What measures are being taken to help them? 观察下列句子。 现在进行时的被动语态:am/is/are + being + done + (by…) 4 用法1 表示“某人/事此时此刻正在被…”, 表示说话时或现阶段某个被动的动作正在进行。 一、 The Present Continuous Passive Voice 现在进行时被动语态 1.They are being hunted, illegally, for their valuable fur. 2.The man is being questioned by the police now. 3. Measures are being taken to protect those endangered animals 现在进行时的被动语态与always, constantly等词连用时,表示经常性的被动动作,此时往往带有赞赏、厌恶等感情色彩。 1. Recently my daughter is always being praised by the teachers. 2. To the teacher's anger, the same mistakes are always being made by his students. 用法2 ( ) Someone is hunting African elephant. by someone. African elephant is being hunted 主语 谓语 宾语 宾语 主语 谓语变被动 (时态不变) be + being + done + by 2. 主动语态变被动语态的原则 “三变” 原句主语 by 短语 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 原句主谓宾以外成分不变 2. 主动语态变被动语态的原则 1. We are doing many things to protect the animals. Many things are being done to protect the animals. Change the sentences into their passive voice. 2. We are observing the Tibetan antelopes these days. The Tibetan antelopes are being observed these days. (1) 肯定形式:主语 + be(am/is/are) + being + done The house is being painted. (2) 否定形式:主语 + be(am/is/are) + not + being + done The trees are not being watered. (3) 一般疑问形式:be(Am/Is/Are) + 主语 + being + done ? Am I being watched over ? (4) 特殊疑问句形式:特殊疑问词 + be(am/is/are) + 主语 + being + done ? 3. 基本结构 When is the wall being painted ? 10 Choose the suitable verb forms to complete the sentences. 1. I’m (work