(
课件网) Discovering Useful Structures 新人教必修Book 2 Unit 2 Wildlife Protection Learning objectives In this class, you will identify the present continuous passive voice; summarise the form and function of the present continuous passive voice; practice using the present continuous passive voice in sentences and passages; give a presentation applying the present continuous passive voice to share ideas about protecting animals and plants in your neighbourhood. What are they doing in the picture The polar bear . The panda bamboo. The elephant sports. is swimming is doing is eating Review: the present continuous tense The polar bear is swimming. The panda is eating bamboo. The elephant is doing sports. 现在进行时的构成: _____ be (am/is /are) doing Review: the present continuous tense The whales _____(kill) by human beings. are killed The rhino _____ (hunt) by someone. is hunted Review: the passive voice The whales _____(kill) by human beings. were killed The rhino _____ (hunt) by someone. was hunted 被动语态的基本构成: _____ be + V.ed(过去分词) Review: the passive voice （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) 主语 + am/is/are + being + done + (by…) 表进行 表被动 观察总结：现在进行时的被动语态 结构 现在进行时的 被动语态： 现在进行时的被动语态 Present Continuous Passive Voice 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。 Summary 2. 句型 1）肯定形式：am/is/are＋being＋过去分词 The house is being painted. 2）否定形式: am/is/are＋not＋being＋过去分词 The trees are not being watered. 3）疑问形式: Am/Is/Are＋主语＋being＋过去分 词？ Am I being watched over 4）特殊疑问句的形式: 把特殊疑问词放在一般疑问句前面 How many bridges are being built in the village 1. 表示说话时正在进行的被动动作，句中常用now, right now, look, at present, at the moment等时间状语连用。 1).He (examine) by the doctor now. 2). Look! The baby _____ (take care of) by her aunt. is being examined are being cared 3. 现在进行时的被动语态基本用法 2. 表示现阶段正在进行的被动动作(说话时不一定在进行),句中常用at present, these days，these weeks等时间状语。 is being studied 2). The disease _____ (study) at present by scientist. is being studied 1)The problem of food safety _____(study) by scientists these days. Children of our neighbors _____ always _____ (praise) by our parents. 3.表示一种习惯的被动行为(often, always, frequently, constantly ),带有赞扬、羡慕、抱怨，讨厌等感彩。 being praised are I don't understand why my bike_____ often _____(steal). being stolen is The children are being taken care of by their aunt. Children are taken good care of at school. The report is being written by one of the students. The report is well written. Attention 1.不可遗漏being take care of, look after ,talk about，think of 等动词与介词构成的短语用于现在进行时的被动语态时，其中的介词不可省略 2.部分介词短语介词不可省略 Look! The baby is ... ...
