英语必修2译林牛津版unit 2教案2（home alone）

1、英语必修2译林牛津版Unit 2教案2（Home alone）Period Two Home alone .Teaching Aims:Help the students learn how to identify the parts of an informal letter.Teaching Important Points:Talking about traveling and adventures.Teaching Difficult Points: Finding the clues about the writers journey.Teaching Methods:Skimmin

2、g and scanning; asking-and-answering activity.Teaching Aid: A tape recorder and a computer教师看高考阅读理解、专题训练(*)、时文阅读 技巧点拨时文阅读是高考阅读理解的考查重点。它所报道的都是国内外最新的事物或趋势，内容新颖，语言地道。阅读时文可拓宽考生视野，使考生了解国内外大事及最新动态，激发考生的阅读兴趣，增加考生的语言积累， 进而提高考生的语言运用能力，从而做到从容应考。时文多为记叙文或说明文，或记叙某人某物，或介绍某新生事物、科研进展、生活时尚等。此外，广告也可归为时文范畴。 因此，要正确理解阅读

3、材料，考生需灵活运用阅读技巧，从而准确把握文章脉络，抓住文章主旨。 活学活用阅读下列短文，按要求完成读写任务Move Earth it's no science fictionLONDON Scientists have found an unusual way to prevent our planet from overheating：move it to a cooler spot.All you have to do is send a few comets(彗星)in the direction of Earth，and its orbit(轨道)will be change

4、d.Our world will then be sent spinning into a safer，colder part of the solar system.This idea for improving our climate comes from a group of US National Aeronautics and Space Administration(NASA) engineers and American astronomers.They say their plan could add another six billion years to the usefu

5、l lifetime of our planeteffectively doubling its working life.The plan put forward by Dr Laughlin，and his colleagues Don Korycansky and Fred Adams，needs carefully directing a comet or asteroid so that it passes close by our planet and sends some of its gravitational energy to Earth.“Earth's orbi

6、tal speed would increase as a result and we would move to a higher orbit away from the Sun，” Laughlin said.Engineers would then direct their comet so that it passed close to Jupiter or Saturn.The comet would pick up energy from one of these giant planets.Later its orbit would bring it back to Earth，

7、and the process would be repeated.In the short term，the plan provides an ideal way to global warming，although the team was actually concerned with a much greater danger.The sun is certain to heat up in about a billion years and so “seriously compromise” our biosphere(生物圈) by cooking us.That's wh

8、y the group decided to try to save Earth.The plan has one or two worrying aspects，however.For a start，space engineers would have to be very careful about how they directed their asteroid or comet towards Earth.The smallest miscalculation(误算)in orbit could fire it straight at Earthwith deadly consequ

9、ences.There is also the question of the Moon.As the current issue of Scientific American以约30词概括文章大意_.根据短文内容选择最佳答案1What makes the scientists plan to move Earth?AA few comets are moving to the direction of Earth.BEarth's working life is coming to an end soon.CEarth will become too hot for mankind

10、to keep alive.DThe moon is moving farther and farther away from Earth.2If the plan is successful，Earth will have a working life of _years.A12 billion B6 billionC18 billion D24 billion3What serious problems might the plan cause according to the passage?AThe comet might hit Earth and man might lose th

11、e moon.BEarth might be moved too far away and man might be frozen to death.CThe comet might hit Jupiter or Saturn and never return to Earth.DEarth's working life might be greatly shortened.4What does the underlined word “compromise” mean?Aprovide Bbenefit Cshare Dendanger5Which of the following

12、best shows how the plan would work?参考答案The text is about a way to save the earth from overheating：to send a few comets in the direction of Earth，making the earth spin into a safer，colder part of the solar system.(35 words)1解析：从The sun is certain to heat up in about a billion years and so “seriously

13、compromise” our biosphere(生物圈) by cooking us.得知答案。答案：C 2.解析：从their plan could add another six billion years to the useful lifetime of our planeteffectively doubling its working life.得知答案。答案：A3解析：从倒数第二段的in orbit could fire it straight at Earth和最后一段的the Moon would be stripped away from Earth得知答案。答案：A

14、4.解析：从by cooking us(把我们烤熟)推知“compromise”应为 “危害”之意。答案：D 5.解析：首先地球必须远离太阳，后面的Later its orbit would bring it back to Earth都说明A最好阐述了这种位置。答案：A.Teaching Procedures:Step 1 Greetings Greet the whole class as usual.Step 2 RevisionAsk one or two students to talk about their traveling experiences.Step 3 Pre-rea

15、ding Show the students some pictures on the screen.Let the students to discuss them.T: What do you think of the pictures in the media show? Have you ever been to all these places? Do you like traveling? S: Yes./ No. Step 4 Reading Task 1 Reading strategy First, have the students read the tips page 2

16、3 about reading an informal letter. Then let them Go through the letter on pages 22 & 23 .Show the following on the screen, ask student if the statements on the screen are true or false.1. Addresses are included. 2. Dates are included.3. Greetings are usually used at the beginning of the letter.

17、4. Previous information is referred to at times.5. The readers surname is addressed. 6. Jokes can be made.7. The letter is signed off with the author's surname. Suggested answers: TTTTFTFTask 2 Fast reading First, ask the students to read the letter quickly and then finish part A on Page22 and p

18、art C1 on page 24Suggested answers: TTTTFTFTask 3 Careful reading In this part, get the students to read the letter again and then work together with their partners to find the clues of the writers adventure. Then show the form on the screen and give them a few minutes to fill in the form about the

19、whole text. Check the answers with the whole class. T: Now lets read the letter again and carefully, and then fill in the form on the screen about the adventure.(The numbers of the words is within three words.)Title: 1._Starting place: 2._Starting time: 3._DestinationsMeans of transportationActiviti

20、esMoroccoBy plane4._5._6._sleeping in bagsseeing beautiful stars The River Nile Not mentioned 7._ 8._ Not mentioned seeing wild animals living with the local people Mount Kilimanjaro in TanzaniaNot mentioned 9._ HimalayasNot mentioned Total journey time length: 10._Suggested answers: 1. Adventure in

21、 Africa 2. London 3. July 15 4. the Sahara Desert 5. On camels /By camel 6. Camping in tents 7. going white-water rafting 8. Kenya 9.climbing Mount Kilimanjaro 10. Over four weeksSeveral minutes later, check the answers with the whole class. T: Please answer the following questions, and I think they

22、 are a piece of cake to you after you have understood the whole text. Show the following questions on the screen. 1. How are they going to travel through the Sahara Desert?A.on foot B. by train C. on camels D. by car2. What do they have to wear when they go white-water rafting? A. a helmet B. a life

23、 jacket. C. a helmet and a life jacket. D. It didnt say in the article3. Why Will they try to get close to the wild animals? A. they want to play with them B. they can give them something to eat.C.they want to take some good photos. D. they want to catch them4. Where are they going to climb Mount Ki

24、limanjaro?A.Himalayas B. Tanzania C.Sahara desert D. Kenya5. How do many people feel when they are climbing Mount Kilimanjaro? A. negative B.sad C.excited D. tired and sickStep 5 Post-reading Ask the students to reread the letter and complete CI, C2, on pages 24 individually. And then check the answers with the whole class. Ask the students to analyze the writing characteristi