Unit5 SectionA GrammarFocus～4c 教学课件2023-2024学年人教版九年级英语全册

Unit 5 What are the shirts made of ? Section A Grammar Focus ~ 4c 九年级全一册 人教版 Learning Goals Warming Up Grammar Summary Exercises 1 1 2 3 4 5 通过本课的学习，学生能够： ①掌握一般现在时的被动语态的构成，被动语态的用法以及与主动语态之间的转化。 ②能用被动语态描述生活中的一些事情 Learning Goals Bing Dwen Dwen is made ____ cotton and glass and it is made____China. of in Warming Up Pu’er tea is produced in many different areas in China. Presentation Look at the chart on the textbook. 思考：①被动语态的结构有什么规律？ ②被动语态句子中的主语是动作的执行者还是承受者？ ③在什么情况下使用被动语态？ Are your shirts made of cotton？ Yes, they are. And they were made in the US. What’s the model plane made of？ It’s made of used wood and glass. Where is tea produced in China？ It’s produced in many different areas. How is tea produced？ Tea plants are grown on the sides of mountains. When the leaves are ready, they are picked by hand and then are sent for processing. Active Voice：People grow tea in Hangzhou. Passive Voice：Tea is grown(by people) in Hangzhou.  被动语态 (一)概念：英语中动词有两种语态：主动语态和被动语态。主动语态表示主语是动作的执行者，被动语态表示主语是动作的承受者。 People grow tea in Hangzhou. Tea is grown(by people) in Hangzhou.  (二)构成：被动语态由“be＋及物动词的过去分词”构成，其中be有人称、数和时态的变化。 I am often asked the questions by my pupils. You aren’t allowed to take photos. (三)主动语态变为被动语态的方法 第一步:将主动语态的宾语改为被动语态的主语； 第二步:将主动语态的谓语改为“be+及物动词的过去分词”结构； 第三步:将主动语态的主语改为介词by的宾语，放在 谓语之后(有时可省略)。 I am often asked the questions by my pupils. My pupils often ask me questions. Instant Training We usually use computers to search for information on the Internet.（改为被动语态） Usually computers ________________to search for information on the Internet by us. are used (四)被动语态的用法 1.不知道或不必提及动作的执行者 The first electric railway was opened in 1890. 第一条电气铁路是在 1890 年开通的。 2.强调动作的执行者 The beautiful hat was given by my grandmother. 这顶漂亮的帽子是我奶奶给我的。 3.强调动作的承受者 The TV was invented after the car． 电视是在汽车之后发明的。 4.动作的执行者是无生命的事物 The bridge was washed away by flood. 桥被洪水沖走了。 5.常用于陈述客观事实，一般用在科技文章或新闻报道中 More research needs to be done, if this problem is to be solved. 如果要解决这个问题，仍需做更多的研究工作。 6.