1、1Unit 6 When was it invented ?Section A Period 1Learning aims: Learn the new words and phrases to talk about inventions;Learn the target language.Learning difficult points: The time and usage of different inventions.Learning steps:一Preview1.发明 v. 发明物 n. 发明家 n. 被发明 被某人发明 2.用来做 3.可调整后跟的鞋子 4.电控拖鞋 5.在黑暗
2、中 6.改变鞋子的样式 7.电动拖鞋 8.最有用的发明 9.电灯 10.一整天 二Exhibition 被动语态1.被动语态的含义： 被动语态表示主语是动作的 （承受者/执行者）2.被动语态的构成： (be 有人称、数和时态的变化)3.被动语态强调宾语时，用 by引出动作的执 行者，by 意为 结构即： ，意为 Eg.We clean our clas sroom every day.(变被动) My mother bought the bike in 2011.(变被动) The book Guo Jingming last year. (write)4.各种时态的被动语态被动语态的时态由
3、be的各种时态形式+动词的过去分词构成。即： 一般过去时： / +V 过去分词一般现在时： / / +V 过去分词Eg. The classroom them every day.T he classroom them yesterday.5.被动语态的句式结构：变否定句时，在 be后加 ；变疑问句时，将 be提到 前。Eg. The lights Chinese. 电灯不是中国人发明的。The song is sung by Li Yuchun. (变一般疑问句)The watch was made in Shanghai.(变否定句)计算器是什么时候发明的？ the calculator
4、?When did they invent the microwave oven ? (变被动)The microwave oven ?电灯是由谁发明的？ the lights ?三Feed back1. Its used for scooping really cold ice cream.be used for 意为 for 为介词，后接 / 相当于 eg. They use the knife to cut apples. （变被动句）The knife apples.The knife apples.2be used as 意为 as 为介词，意为 ；be used by 意为 by 为介词，意为 。eg. The computer the teachers 这台电脑被老师们使用。The sofa a bed sometimes. 这个沙发有时被用作床。2.battery-operated slippers 3.I think it would be better to have 四Improvement 详见课时练
