人教版高中英语课件：Unit 2 Cloning.ppt

Dolly,Unit 2 Clone Reading,Unit 2 Cloning Reading CLONING: WHERE IS IT LEADING US?,Pre-reading,In pairs discuss what you understand about cloning. Then judge the following sentences are true or fasle.,eading I Scanning ( 5ms ),Write the letter “T”if the statement is true. Write “F”if it is false.,1.Cloning means making a copy of an animal or a plant. 2.Dolly the sheep was the first successful clone of a mammal. 3.Natural clones happen in animals as well as in plants.,F,T,T,Fast reading I.Skim and sum up the main idea of each paragraph.,Para.1 cloning is a way of making an exact copy of another animal or plant. Para.2 cloning have two major uses. Para.3 The problems of Dolly Para.4 The effect of Dolly Para.5 It is forbidden to clone human beings.,Definition : It is a way of making an exact copy of another animal and plant. T &F Cloning has been going on in the natural world for thousands of years Clones happen in animals as well as in plants.,Intensive reading Part 1 (Para1),1.How many major uses do cloning have? Firstly, commercial Secondly, research 2. How many female sheep participate in the cloning of a new sheep? 3.When was the cloning of Dolly the sheep born?,Para 2,3,The major uses and procedures of cloning,1996,Do you know about:,The procedure works of a sheep?,normally,Dolly lived for six years and a half years, half the length of the life of the original one.,Para3:The problems of Dolly,objection,appearance,imagination,Possibility,beings,True or false: 1 People feared that Cloned Hitlers would do harm to the world. 2 All the research into human beings will be forbidden. 3 Some countries will use cloning in a wise way.,Para 5,Peoples reaction to cloning,Many governments forbade research into human beings.,Explanation:Language points,1. It is a way of making an exact copy of another animal and plant. exact adj.精确的, 准确的, 原样的, 精密的,2. It happens in animals when twins identical in sex and appearance are produced from the same original eggs.,3.Cloning scientists were cast down to find that Dollys illnesses were more appropriate to a much older animal. 1) cast down：feeling unhappy and depressed使沮丧, 低沉， 使下降, 推翻 be cast down = feel discouraged 2) be appropriate to: be suitable for a particular person, condition, occasion or place; fitting适合于的，与相称的,4. Pick out the proper explanation for words on the left,straightforward commercial conservative Identical accumulate obtain,exactly the same Not complicated Be related to make money Not very modern in style get something gather or pile,Retell the passage,Cloning is a way of making an exact copy of another animal or plant.It happens in plants as well as animals.Cloning has two major uses.One is for commercial purposes;the other research.,Although cloning animals is complicated,Dolly the sheep is a breakthrough. Before lone,she got seriously ill and only lived 6.5 years. However,her appearance raised a storm of objections and arguments.,Some countries became nervous and conservative.Therefore, research into human cloning is forbidden. Nobody knows where cloning is leading us.,Homework,Read the passage again and again,find out any question for next class. Learn the useful new words and expressions by heart.,THANK YOU！,