1、2014-2015学年高中英语（精品）同步教案第3课时：Unit 2 Cloning人教新课标选修8） The Third Period SpeakingTeaching goals 教学目标1. Target language目标语言a. 重点词汇和短语 theme，fighting，conflict，argument，destruction，in ones opinionb. 交际用语Expressing and supporting an opinionI would never accept.Im not bothered about.I dont mind but.I hope yo
2、ull carry on.Are you sure you want to.?I agree with you that.Do you think it is wise to.?I think you should.Well done to you for.I cant help thinking.I could never agree to.2. Ability goals能力目标Enable the students to express their opinions about cloning using some useful expressions.3. Learning abili
3、ty goals 学能目标Help the students learn how to express their opinions.Teaching important points教学重点Learn to use the structures of expressing and supporting an opinion.Teaching difficult points 教学难点How to give a speech.Teaching methods教学方法Cooperative learning.Teaching aids教具准备A computer & a projector.Te
4、aching procedures & ways教学过程与方式Step Lead-inT: Good morning / afternoon, boys and girls! Ss: Morning Mr.T: Last class we have talked about clone, we all know it is not a dream. Now everyone, if I give you a chance to clone what will you restore then?S: Edison, dinosaurs, Japanese wolf, Einstein.T: Do
5、 you want to clone Hitler?S: No. Hitler is a dangerous person.T: If some terrorists master this clone method, they may bring disasters. All your choices are excellent. Today we will learn another passage about cloning, from which we will know whether we can bring dinosaurs back to life. Ask the stud
6、ents to go through some facts of cloning.T: From these facts we know human beings have achieved great progress in cloning. Now read the text carefully to get the answers for these questions: what animals have people cloned?S: Frogs, mice, cows, sheep, bisons, cats, and dogs.T: Good job. Answer the q
7、uestion: What are the common characteristics of these animals?Ss: They are nowadays animals.T: Yeah, I think you must have seen the film Jurassic Park, in which a scientist clones several different kinds of extinct dinosaurs. Can we really clone dinosaurs now?Let the students turn to page 15 and the
8、n read the text quickly. Several minutes later.S: We cannot clone dinosaurs, because its difficult for us to get its DNA.T: Good job. Its only a dream. Dinosaurs disappeared 65,000,000 years ago. So the chance of dinosaurs ever returning to the earth is merely a dream.Step Read and answer (P16)To an
9、swer these three questions, teacher can give the students some examples as explanation, for example, Question 1.T: Now think about this question: if in the world there is only one sheep and human beings want to clone more. Some days later a Dolly appears, then many more. But one day all sheep get th
10、e same deadly disease. Now please think about what the results are.S: Maybe they would all die. T: Why? S: Because all sheep have the same arrangement of genes. T: Right. Now can you answer Question 1? Why shouldnt you clone an extinct animal unless there is enough diversity in the group?S: It is us
11、eless to clone an animal if there is not enough diversity in the group for it to overcome illnesses.T: Why is it wrong to clone an extinct animal if it would have to live in a zoo?S: If the cloned animals have to live in the zoo, it is unfair to them. They need freedom.T. Why cant you clone the DNA
12、of animals that have been extinct longer than 10,000 years?S: Dinosaurs disappeared 65,000,000 yeas ago. So the chance of dinosaurs returning to the earth is merely a dream.Step Discussion (Question 2)This is a speaking task. Ask the students to have a discussion in groups, organize their words prop
13、erly, and give vivid description of the chosen animals.T: Now look at the table on page 16, discuss in pairs which extinct animals described are worth restoring by means of cloning. Choose one animal and use the information to help you argue why this animal should be restored to the earth. Give the
14、students six minutes to discuss.S1: I think Great Auk is a wonder. Because it is a very large bird that cannot fly. The useful thing about it is that its feather doesnt absorb water. I think if we wear clothes made of its feather, we will not worry about rain.S2: I agree with you. But I am happy to
15、accept Dodo bird because it is friendly and not harmful. I like gentle animals. It can also lay large eggs and its meat is tasty, but I dont think I will eat its meat.T: From your answers I think these animals are all useful and they all should be restored to the earth. At the same time, we should t
16、ry our best to protect them. Do you agree with me?S: Yes.Step Writing a report (P17)Deal with Questions three and four. Divide the whole class into four groups. Then they can have a competition. T: Now everyone, imagine all of you are owners of your chosen animal. Now work together, and give us a vi
17、vid description of your pet, then I will decide which one is the best to be resorted to the earth.Several minutes later, the students give performances. At the same time, list some major points on the blackboard.T: Well done everyone. It is really hard for me to choose, let us vote OK?Step TALKING (
18、P55)Ask the students to talk about the questions with the teachers help.T: Look at the questions on page 54. Do you know how to show your opinion? You can discuss the following questions with your partner and use these expressions on page 54.1. How would you feel about having a clone of yourself in
19、the family?2. What problems did you have growing up and how can you help him / her avoid them.Step HomeworkT: Write down your feelings and attitudes towards clone. Combine them into a composition. Sample version 1:In my opinion it is wrong to clone human beings. If my parents decide to have a clone
20、made of me, I will feel very sad and I will never accept the clone as a member of my family or as my friend because I think it is unfair to natural things.We are all sons of nature, birth or death is a natural thing. The day we born, it destined we are independent. Nobody has the right to change our
21、selves. If one day I were to be cloned to another person, he would kill me, because I lost some original characters. I hope we should respect human beings, and not change any original things.Sample version 2:I think the cloning represents the progress of the mankind. But it still has many problems t
22、o work out, the law, the ethic and especially the goals and purposes for cloning. However, we are actually doing much of this research for the improvement of life for humans. We should get benefit from cloning.In China, the government has put out written policy on human cloning. It has officially banned research on human cloning for reproduction purposes, but allows cloning on embryonic stem cells and remedial cloning. As we all known, everything cant be perfect. We should treat the cloning with correct attitudes. We should know the advantages and disadvantages of cloning.