【教学设计】Unit 9 Lesson 3（北师大）.docx

Unit 9 WHEELSLesson 3 Clean Machines 教材分析This is the third lesson in this unit. The main topic is Clean Machines. The goal of this topic is to compare and practice using the Present Perfect and Present Perfect Continuous tenses. 教学目标【知识与能力目标】1.To read the article and understand the main points.2.To compare and practice using the Present Perfect and Present Perfect Continuous tenses.【过程与方法目标】Helpthestudentstopractise reading to announcements for specific information.【情感态度价值观目标】Help students to improvetheirreadingabilitiesbyusingsomestrategies. 教学重难点【教学重点】The usage of the Present Perfect and Present Perfect Continuous tenses. 【教学难点】To practise using the Present Perfect and Present Perfect Continuous tenses. 课前准备 Tape recorder, Multimedia 教学过程. Warming up 1. The car has an important effect on our life. Can you talk about it? Including its disadvantages. In your opinion, how should we improve the car?2. Why do scientists develop the kind of car? Where do the cars get their power from?Scientists have been making solar cars for over twenty years. They have made cars that go up to 80 k. p. h.!3. What do you want to know anything else about solar cars?II Reading1. Read the passage and circle the best answers.1). If the weather is bad, there is no sun A. you cant use solar car. B. you have to use petrol in solar car. C. you can use solar car. D. you must slow down the speed at 40 k.p.h.2). It can be inferred from this text that:A. there is no doubt that solar cars have been more and more popular.B. you can take a long trip by solar car.C. solar cars are cheap, clean and safe.D. Marie Logan is a professor from Queensland University.3). All the facts are mentioned except for _.A. solar cars will not pollute the environment.B. a lot of people havent realized the potential of solar cars.C. solar cars speed is becoming faster.D. solar cars shapes are special.2. Read the interview about solar cars. Are these statements true or false?1). Marie Logan began designing cars when she was a student.2). She has won most of her races.3). The team has nearly finished building a solar car.4). Marie has written a book about solar cars.5). Solar cars can work even in cloudy weather.III GrammarWe use the Present Perfect to talk about a finished activity (achievement) and the Present Perfect Continuous to talk about an unfinished activity.Ive read Hamlet. Ive finished reading it. Ive been reading hamlet. I havent finished reading it.We use the Present Perfect to focus on a result of an activity, especially when we give a number or quantity. We use the Present Perfect Continuous to focus on the activity itself, especially to explain visible consequences of it.He has run three miles. focus on the result: He has covered the distance of three miles.He has been running for an hour. focus on the ac