1、Unit 3Science and natureTask,Writing a formal letter,You may have to correct grammarerrors 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 be,Tips for listening,Listen to the phone conversation and corre
3、ct the notes below.,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-old,two,18,6. Age of patie
4、nts: 16-55.7. 5% of operations are unsuccessful.8. Costs RMB 185,000,60,8%,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.,Tape
5、script :,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 operation,
6、 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 between
7、 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 tomorro
8、w. 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、 are not,cant,dead,ve,already 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 occurred,potatoes,have,7. Cloning can really help us in farm construction, so that we can feed more pe
10、ople with cheaper and bitter food. 8. We can clone a cow so that it will produce high-quality milk.,food,production,more and better,/,produces,1 F 2 F 3 T 4 F 5 T,Part B,Tapescritp: S= Student S= ScientistStudent: Isnt cloning dangerous? Scientist: Many people have a bad idea about cloning, but this
11、 is because they 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 t
12、he same creature 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:
13、Cloning has always 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 t
14、hat have been cloned 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 c
15、orn that grows in 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 opinions e.g. What do you think? / what are your thoughts on this topic? / Dont you think
16、so? / Do you agree? / Do you feel the same about?/ Is that your opinion too?,Skills building 2: conducting a discussion,Introducing new ideas into the discussion e.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: r
17、eporting back to a science journal,Interview formSafety 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
18、 as normal food 2. causes weight gain or loss/healthy/no side effects 3. just the same/ not as delicious/more delicious 4. cheaper/more expensive/same as normal food 5. Need strict control/no need for control/same as normal food/should be forbidden,C Questions (pair work),1 Dose he/she think that fo
19、od from cloned plants 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 shou
20、ld be controlled by the government? 6 What other questions did you ask him/her?,D Discussion You may want to mention some of the following points:,compare with normal food scientific study quality control freedom of choice for customers,Skills building 3: writing a formal letter,1. When you write a
21、letter, what information should you include?,Your address the date receivers name, job title (if you know it)or address formal greeting (name/little) formal ending your name and signature,Read the following letter and label the parts with the words in the picture above,101 High Street London 1 May,
22、2011,your address,the date,job title,Mr. Frank Brown Public Relations Manager Safeway Laboratories 305 Queens Drive Liverpool,receivers name,receivers address,Dear Mr. Brown, Im writing to complain about your plans to start cloning human beings in the UK In summary, I insist that you take the opinio
23、ns of the people of the UK into consideration, and end this practice immediately. Yours sincerely, Jim Davidson Jim Daviddson,formal greeting,formal ending,signature,your name,Step 3: writing a letter to a supermarket,Read the two articles about cloned food and underline all the advantages and disad
24、vantages.,B. Write a formal letter to a supermarket. 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 i
25、n Part D of Step 2 What you think the supermarket should do,it would show that the majority of peoplemajority 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,Thank you !,