高中英语 Unit 3 Science and nature Task课件 牛津版必修5

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1、Unit 3 Science and natureTask Writing a formal letter You may have to correct grammar errors and spelling mistakes.You may have to make changes to the information in the text.You may need to change the style of the text. When you are checking or correcting,Skills building 1: Changing or correcting a

2、 text Read the questions or instructions carefully. Listen closely when spellings are given. Pay attention to words or phrases that introduce contrary ideas, such as: No, I dont think so. Thats not right. Are you sure? But I think it should beTips for listening Listen to the phone conversation and c

3、orrect the notes below.1. Legs can be made up to 8 cm longer. 2. The new bone is not as strong as before. 18 3. A 45-year-old man died after trying to grow by 6 cm. 4. Patients cannot do any exercise for three years. 5. It takes 14 months to increase your height by 12 cm. 35-year-oldtwo 18 6. Age of

4、 patients: 16-55.7. 5% of operations are unsuccessful.8. Costs RMB 185,000608% 85,000 C: According to my notes, the doctors break the bones of your legs and then make them grow by about eight centimeters? M: I think youve got that wrong. The doctors can make them grow by about eighteen centimeters.T

5、apescript : C: Yes, I see. So, the bone is not as strong as before? M: No, The bone is as strong as the original. C: Oh! I also wrote that a forty-five- year old man died after trying to make his legs grow by six centimeters? M: No, he was only thirty-five years old. C: Thats young! After the operat

6、ion, patients cant do any exercise for three years. Is that right? M: No! For two years. C: Wow! I got a lot of things wrong then. What about increasing your height by twelve centimeters in fourteen months? M: No, eighteen months.C: And the age of the patients who can have this operation. It is betw

7、een sixteen and fifty-five. M: No, that should be between 16 to 60. C: And how many operations are unsuccessful? M: 8%. C: And the cost is RMB185000? M: No, its about 8500 yuan. C: Phew! I did get a lot of things wrong, but I think thats all. Thanks for having such a good memory. I will see you tomo

8、rrow. Bye.M: Ok. Bye, now. Step 1: confirming information Listen to the conversation and check the notes below. 2. Twins are clones of each other, and are the same creature or plant.3. You can clone a deaf person and bring him back to life.4. Youll probably never eat any food from cloned plants. but

9、 arenot t deadve alr ady eaten 5. Cloning does not occur in nature.6. Many of the grapes, tomatoes and bananas in the supermarket come from plants that had been cloned in this way. has always occurredpotve 7. Cloning can really help us in farm construction, so that we can feed more people with cheap

10、er and bitter food. 8. We can clone a cow so that it will produce high-quality milk. food productionmore and better / produces 1 F 2 F 3 T 4 F 5 TPart B Tapescritp: S= Student S= Scientist Student: Isnt cloning dangerous?Scientist: Many people have a bad idea about cloning, but this is because they

11、dont understand the nature of cloning. Student: What do you mean? Scientist: For one thing, although a clone is an exact copy of another plant or animal， it is not the same plant or animal-it is a twin. Twins are in fact clones of each other. They look like each other, but are not the same creature

12、or plant. For example, you cant clone a dead person to bring him or her back to life. Student: Still, I wouldnt want to eat food from cloned plants or animals! Scientist: In truth, youve probably already eaten food from cloned plants. Student: Really? I dont believe you! Scientist: Cloning has alway

13、s occurred in nature. Many plants spread by making clones of themselves -part of the plant separates from the main plant, and grows by itself. Farmers have made use of this idea for centuries. Many of the grapes， potatoes and bananas that you buy in the supermarket come from plants that have been cl

14、oned this way. Student: What about cloning that is not natural - cloning done in labs? Scientist: It can really help us in food production, so that we can feed more people with more and better food. For example， we can clone a cow that produces high-quality milk, or clone a type of corn that grows i

15、n poor soil. In some cases, we can even improve the clones in some way so that they can survive disease or have better qualities than before. Student: Wow, that sounds great! Asking for peoples opinionse.g. What do you think? / what are your thoughts on this topic? / Dont you think so? / Do you agre

16、e? / Do you feel the same about?/ Is that your opinion too?Skills building 2: conducting a discussion Introducing new ideas into the discussione.g. Another argument is that / Another way of looking at it is/ Dont forget / But what about?/ On the other hand, / We can also Step 2: reporting back to a

17、science journal Interview form Safety of food from cloned plants or animals _ Possible side effects _ Taste compared with normal food _ Cost _ need for government control _ _ Practice:B Vocabulary (pair work)1. dangerous/no one knows yet/still not very safe/quite safe/very safe/as safe as normal foo

18、d 2. causes weight gain or loss/healthy/no side effects3. just the same/ not as delicious/more delicious 4. cheaper/more expensive/same as normal food5. Need strict control/no need for control/same as normal food/should be forbidden C Questions (pair work)1 Dose he/she think that food from cloned pl

19、ants or animals is safe?2 Dose he/she think that this kind of food has any side effects?3 Dose he/she think that this food tastes the same as normal food?4 What dose he/she think about the cost of food from cloned plants or animals?5 Dose he/she think that this kind of food should be controlled by t

20、he government?6 What other questions did you ask him/her? D DiscussionYou may want to mention some of the following points:compare with normal foodscientific studyquality controlfreedom of choice for customers Skills building 3: writing a formal letter 1. When you write a letter, what information sh

21、ould you include? Your address the datereceivers name, job title (if you know it) or address formal greeting (name/little)formal endingyour name and signature Read the following letter and label the parts with the words in the picture above 101 High StreetLondon 1 May, 2011your addressthe date job t

22、itleMr. Frank BrownPublic Relations ManagerSafeway Laboratories305 Queens DriveLiverpool receivers namereceivers address Dear Mr. Brown,Im writing to complain about your plans to start cloning human beings in the UKIn summary, I insist that you take the opinions of the people of the UK into consider

23、ation, and end this practice immediately.Yours sincerely,Jim DavidsonJim Daviddson formal greetingformal endingsignatureyour name Step 3: writing a letter to a supermarket A. Read the two articles about cloned food and underline all the advantages and disadvantages.B. Write a formal letter to a supe

24、rmarket. Use the information on the previous pages and the information above to help you. You may want to mention: Your opinion about food from cloned animals The advantages and disadvantages of food from cloned animals Any concerns your group brought up in Part D of Step 2 What you think the supermarket should do 1. it would show that the majority of people majority n. 多数，多半 a / the majority of + cn. / un. in the majority 占大多数 The majority of his books are kept upstairs.他的大部分藏书在楼上。 The proposal was passed by a majority of 66.提议以超过66票通过。 minority 反义词 ：少数 Homework Finish writing the letter