Unit9 Section A.doc

Unit9 When was it invented?第一课时：Section A (1)一、 教材分析1、 教材简析 此课为本单元的第一节课，主要谈论东西的发明时间、发明者和东西的用途，它围绕着以下三个话题展开： When was it invented? Who was it invented by? What was it used for?2、 教学目标 知识目标： When was it invented? It was invented in. Who was it invented by? It was invented by. What was it used for? It is used for doing sth. 能力目标：发展学生的听及识记能力，培养学生综合语言运用 能力。 情感、态度和价值观：让学生对身边所发明的事物有所认识和了解，激发学生对创造发明的兴趣。3、 重点和难点 重点句子：When was it invented? It was invented in. Who was it invented by? It was invented by.What was it used for? It is used for doing sth. 难点：被动语态的构成和用法4、 教学辅助工具：录音机，图片二、 学情分析 学生在学习第三单元时对被动语态已经有了初步的认识，并能运用该语态来表达一些简单的句子，为本单元的学习打下了一个较好的基础。三、 教学方法 本课采用任务型教学法，用When was it invented?这个问句，引出谈论有关发明情况的话题。 采用提问、启发和归纳的教法，让学生易于接受教材内容，培养学生的语言运用能力。四、 教学过程设计环节 教学过程学生活动教学意义Step 1Warm-upStep 2Presentation Step 3practiceStep4 Sum upStep 5Homework. Section A1. A contest: Guess who is he (she)?Teacher tells a story of a person and asks students to guess who he/she is.He was from America.He was one of the greatest inventors in the world.He was clever but he was in School for only 3 months.His mother taught him to read and write.He built his own chemical lab when he was a boy.His first invention was the automatic telegraph repeater(电报自动转发器) . He has many inventions in his life and some inventions have changed the world.2. Talking about: The four greatest inventions in China.Teacher show some pictures of the four greatest inventions in China and talk about them with students. 1. Learn some new words and expressions.2. Group work: Section A 1a. Ask students number the inventions according the order they were invented.3. Grammar: The passive voice.(1)The uses of the passive voice.(2)The structure of the passive voice.(3)How to change into the passive voice.1.Listening practice1b. Listen and match the inventions with the dates.2. Pair work1c. Talk about the inventions in 1b like this:A: When was the telephone invented?B: I think it was invented in 1876.2. Listening practice2a. Listen and number the inventions in the order. Languages points:“be used for”Eg: Telephone is used for talking with people.2b. Listen and match the inventions with their inventor and uses.2c: pair work:Role play conversations using the information in 2b.1. Look through the grammar focus.2. Go over the whole lessons.1. Copy new words and listening materials.2. Write a passage to introduce an invention.3. Make up dialogues.Guess and find the answer.Look and talk about the four greatest inventions in China.Group work.Listen and finish the task.Read