Unit 2 Wildlife Protection Discovering useful structures 课件-2022-2023学年高中英语人教版（2019) 必修第二册

Unit2 Wildlife Protection ------The Present Continuous Passive Voice Discovering Useful Structure 1 Teaching Objectives After the lesson, we will be able to 1. learn about the definition the rules and the basic structures of The Present Continuous Passive Voice; 2. master the basic usage of it; 3. use it to make a speech presentation. The Present Continuous Passive Voice 现在进行时 被动语态 2 1 结构：am/is/are + doing 1. We are doing many things to protect the animals. 3. We are seeing the Tibetan antelopes next week. 2. We are observing the Tibetan antelopes 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 表示即将发生的动作 Activity1: Warming-up---Let’s review! 4 结构：be + done 英语动词有两种语态： 主动语态 (the active voice) 被动语态 (the passive voice) 二、The Passive Voice 被动语态 A. 主动语态表示主语是动作的执行者。We planted the tree. B. 被动语态表示主语是动作的承受者。 The tree was planted by us. 5 1. 定义 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。 一、 The Present Continuous Passive Voice 现在进行时被动语态 They are being hunted, illegally, for their valuable fur. People are hunting them, illegally, for their valuable fur. Activity 2: Focus on the form ( ) 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 （时态和语态结合，先体现时态，后体现语态） 现在进行时：am/is/are + V-ing 被动语态： be + done (V过去分词) 现在进行时的被动语态：主语 + am/is/are + being + done + (by…) 表进行 表被动 二、现在进行时被动语态 3. 结构 (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 【即时演练1】——句型转换 They are bu