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Unit5 What are the shirts made of【课题】Unit5 What are the shirts made of?Section A (2a2c)教师复备栏或学生笔记栏【学习目标】掌握生词grass /gra:s/ n. 草；草地 leaf /li:f/ n（. pl. leaves /li:vz/）叶；叶子；掌握短语be made of be made in； 掌握句子What is it made of ? Its made of used wood and glass。 Who is it made by? Its made by university students掌握一般现在时态被动语态的构成和运用【学习重点难点】 掌握句子What is it made of ? Its made of used wood and glass。 Who is it made by? Its made by university students掌握一般现在时态被动语态的构成和运用【学法指导】复习-听说-听力训练-作业巩固【教学过程】【教学过程】一、 导入（启发探究 3分钟）What is this? Its a huge model plane.What is it made of? Its made of used wood and glassWho is it made by? Its made by university studentsWhat is this? Its beautiful paintingWhat is it made from? Its made from grass, leaves and flowers.Who is it made by? Its made by university students二、自学（自主探究 6分钟）1、拼读、记忆单词hear about hear of hear from sb.the art and science fair 艺术和科学展览会 be invited topay for 给钱，付款，买单2、呈现重要句子，学生朗读理解。Its made of used wood and glass. 它是由废弃的木头和玻璃做成的Its made from grass, leaves and flowers. 它是用草、树叶和花做成的the fair is about environmental protection and recycling展览会是关于环境保护和回收利用的e up with 提出，想出 some really interesting and creative ideas. 一些既很有趣又有创意的主意三、交流（合作探究 10分钟）1. 要求学生翻开课本P34放录音一遍，完成2a，2b的听力任务。（1分钟）2. 再听录音一次，填空Nick: Hey Marcus, have you heard about the art and science fair?Marcus: You mean the one just outside the science museum?Nick: Yeah, thats the one. The school notice board says that all students are invited to for free! Our school is paying for it!Marcus: Wow, thats great!Nick: I went there yesterday.Marcus: Did you see anything cool?Nick: Of course! All the works there were made by students.Marcus: What did you see?Nick: I saw a model plane. Its made of wood and glass. I also saw a really beautiful painting. Its made from , leaves and flowers.Marcus: Oh, yeah, the is about environmental and recycling, right?Nick: Yes, and the students up with some really interesting and creative ideas.2. 要求学生听第二遍录音，并逐句进行跟读。（2分钟）3. 听力内容巩固训练。要求学生根据所听到的内容完成下列各句。完成后要求若干学生给出自己的答案。以巩固对听力内容的了解。（4分钟）A: What did you see at the art and science fair?B: I saw a model planeA : What is it made of？B: Its made of steel?A: Where was it made?.B: It is made in Beijing.4. 大声朗读听力材料。（1分钟）5. 放下听力材料，要求学生模仿听力内容，利用2a，2b的信息分角色练习对话练习。然后邀请2-3对同学当堂演示。看哪一对的表现最佳。（5分钟）四、总结（引深探究 15分钟）一般现在时态的被动结构及用法一、概念理解：1. 时态：在英语语言中，时态主要讨论行为动词发生的时间。 如：He often helps me with my English. 他经常帮助我学英语。（help这个动作经常发生often；故用一般现在时）英语中常用的时态有：一般现在时、一般过去时、一般将来时、现在进行时、过去进行时、现在完成时、过去完成时、过去将来时等等。2. 语态：在英语语言中，语态主要讨论句子主语与行为动词的关系。语态有两种：主动语态和被动语态。 主语是动作的发出者(执行者)为主动语态；如： The tall boy often hits his classmates（主语boy是谓语动词hit的发出者）。 主语是动作的接受者（承受者）为被动语态。汉语中常用“被”、“给”、“由”、“受”等词用来表示被动，而英语用：助动词be + 及物动词的过去分词构成如： Chinese is spoken by the most people in the world（主语Chinese是谓语动词speak的接受者）。2. 语态与时态的关系：在任何一个英语句子中都同时存在语态时态，他们是分析一个英语句子的两个主要元素。如： He is looking after his sister at home.（此句为现在进行时的主动语态结构） He is being looked after well by his parents. （此句为现在进行时的被动语态结构）说明：我们以前所学的各种时态的结构其实都时主动语态的各种时态结构。二、被动语态最基本的句型结构是： be +及物动词过去分词 说明：、be 有时态，人称和数的变化。、被动语态中的谓语动词必须是及物动词；因为被动句中的主语是动作的承受者，某些短语动词如look after, think of, take care of, work out, laugh at等，也可用于被动语态。三、被 动 语 态 的 使 用1.当不知道或没有必要指出动作的执行者时，常用被动语态，这时往往不用by 短语。 “Mr. White, the cup with mixture was broken after class. ”(只是告诉老师杯子坏了，不知是谁弄坏的，或不想说出谁弄坏的)。 2.突出或强调动作的承受者，如果需要说出动作的执行者，用by 短语。如：The cup was broken by Paul. 3.当汉语句子的主语既不是动作的执行者，也不是动作的承受者时，这时常用in + 名词作状语，而代替 by 短语。 如：These cars were made in China.四、主动语态变被动语态的变法：主动语态与被动语态之间如何转换1.把主动语态的宾语变成被动语态的主语。 2.把主动语态的谓语变成被动语态的be + 过去分词，时态要与原句保持一致。 3.把主动语态的主语变为介词by 的宾语，放在被动语态里谓语动词之后，by 短语可以省略。如果原句主语是地点名词，在被动语态中用in + 地点名词作状语。 口诀：宾变主，主变宾，谓变be done ,时不变，数格必须随被变。五、一般现在时的被动语态：am /is/ are +done如： Tea is grown in Hangzhou. 杭州种植茶叶【课堂变式】The room every day. You can live in now. A. cleans B. is cleaning C. is cleaned D. has cleaned【解析】 根据句意“房间每天都打扫，你现在可以居住了”，可知，房间是每天被打扫，所以要用一般时态的被动语态，所以选择答案C。五、练评（包含“考点链接” 应用探究 6分钟）根据汉语意思完成下列句子，每空一词。1. 他的新手机是美国制造的。 His new mobile phone _ _ _America.2. 这台电视机是由工厂的工人们制造的。 The TV set is _ _ the workers in the factory. 3. 这些瓶子是塑料做的。 These bottles are _ _ plastic.4. 面包是小麦做的。 The bread is _ _ wheat. 5. 这种沙拉是用香蕉和苹果做的。 The salad is _ _ bananas and apples.补全对话 根据对话内容，填写适当的话语，使对话完整、正确。（每空词数不限）A: What is this?B: Its a plike.A: 1. _?B: Its made of steel and iron.A: 2. _?B: Its used to fly like a plane and ride like a bike.A: 3._?B: I think its strange.A: 4._?B: Yes, I want to try it.A: OK, _.B: All right.【教学反思】
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