Unit 4 Amazing ScienceTopic 2 Section B教案Teaching aims and demands 1. Learn some new words: basic, risk2. Consolidate the usage of modal verb+be+P.P:(1) More and more things will be discovered in the future. (2) The girl will be well cared for. (3) These trees should be watered at once. 3. Talk about flying to Mars and the outer space. Teaching aids录音机/幻灯片Teaching Plan Step 1 Review提问关于太空和人类对太空的研究的一些问题。T: What movie did Michael and Jane see yesterday?S1: They saw a movie about the life in space. T: Does Michael believe there are aliens?S2: No, he doesnt believe it. T: And you? Do you believe there are aliens?S3: No, I dont believe it. Because they cannot be seen. (很有可能出现不同意见，那样更有利于进一步的复习提问。)T: Do you believe there are aliens?S4: Yes, I do. T: What can be done to find them out if there are aliens in the space?S5: Satellites and spaceships should be sent up. S6: Other planets may be visited. S7: More scientific research should be done carefully.T: Good idea. If people do more scientific research, I believe more and more unknown things will be discovered in the future. Now were at school to learn the basic knowledge. We should work hard and then we can discover the unknown things. T: Were you excited about the news of Shenzhou VI?Ss: Yes, of course. T: What did they do during the flight?S8: They took photos. S9: They recorded their activities with a DV. S10: T: Do you want to fly in the spaceship one day?Ss: Yeah. T: Now, man has a plan to fly to the Mars. The astronauts from China, the United States and Russia will finish the task together. I really admire the astronauts.(教师释义并领读admire。)T: Would you like to be an astronaut when you grow up?S11: Yes.T: So you need to learn a lot of knowledge and master some basic skills. What are you going to be in the future?S12: I want to be an astronaut. S13: I want to be a scientist. T: Very good. Im glad to hear that you all want to have a good future. I hope your dream will come true. Now, lets see what Maria and Kangkang want to be when they grow up. Step 2 Presentation 1. (播放1a录音，让学生听两遍，然后回答问题。)T: Listen carefully and find out the answers:(1) What is Kangkang going to be when he grows up?(2) What about Maria?(听后，让全班同学统一回答。)(答案)：(1) Kangkang is going to be an astronaut when he grows up. (2) Maria wants to be a scientist. 2. (学生分组朗读，女孩读Maria， 男孩读Kangkang。读后学生们自己设计问题，然后互问互答。)T: Read the dialog in groups, girls act Maria, boys act Kangkang. After reading, talk about it by asking and answering questions in groups. (读后给学生三分钟时间准备问题。)S1: Has Maria heard the news about the space flight to Mars?S2: No, she hasnt. S3: Who will take part in it?S4: The astronauts from China, the United States and Russia. S5: Why will the astronauts travel to space?S6: They want to discover something new about Mars. S7: What is Kangkang going to be when he grows up?S8: He wants to be an astronaut. S9: Which subject does Maria prefer?S10: She prefers science to dance. S11: So what is Marias dream?S12: She wants to be a scientist in the future. Step 3 Consolidation 学生一起朗读对话1a，然后二人一组练习再表演。调动课堂气氛，熟悉对话。T: Now read the dialog between Kangkang and Maria. Then practice in pairs and act it out. (学生可以练习两遍。)T: Who can perform the dialog in front of the class?(两组学生上台表演，作个比较，然后点评鼓励。)T: Well done! Group 1. Group 2 need to work harder. Step 4 Homework1.熟读1a, 3a。2.造句。要求使用情态动词的被动语态。