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1、2022年高中英語 Unit2 Cloning 第3課時(shí)導(dǎo)學(xué)案 新人教版選修8 Teaching aim: 掌握科普文章的閱讀方法及策略 Teaching key points and difficulty Help students analyze the reading technique of the article. 學(xué)習(xí)過程： New words: 預(yù)習(xí)下列單詞，并會(huì)默寫 1.精確的 2.商業(yè)的 3.坦率的 4.著手，承擔(dān) 5.突破 6.程序，步驟 7.攜帶者 8.總共 9.任意的 10.修改，改正 11.反對(duì) 12.媒介 13.獲得，贏得 1

2、4.獲得，到達(dá) 15.道德的 16.保守的，守舊的 17. 禁止 18.積累 Step 1: Find out the main idea of each paragraph. Para 1. Para 2. Para 3. Para 4. Para 5. (a)Cloning has two major uses. (d)The problems of Dolly. (b)The effect of Dolly. (c)It is forbidden to clone human beings. (e)Cloning is a way of maki

3、ng an exact copy of another animal and plant. Step 2 : Read the passage quickly and finish the following prehensive exercises. Choose the right answer according to the text. 1.Dolly the sheep_____. A. looked exactly like the sheep that provides the egg. B. was the exact copy of the sheep t

4、hat provides the nucleus. C. looked like the sheep that gave birth to it. D. had the characteristics of all three sheep. 2. It can be inferred from the passage that a cloned animal_____. A. usually lives as long as the original one B. usually lives longer than the original one

5、 C. usually lives longer than the original one D. is usually as healthy as the original one 3. Which of the following is not an advantage of cloning? A. Cloning can be used for medical purposes. B. Large quantities of food can be produced by cloning. C. Cloning can help keep animals from

6、 being extinct. D. Famous persons who have passed away can be cloned. 4.We can use the skill of cloning to __________. A. bring about global peace B. create other famous scientists C. improve the development of learning language D. cure some special diseases 5. What are people c

7、loning now ? __________ A. They are cloning trees, crops as well as animals B. They are cloning books and machines C. They are cloning humans and animals D. They are cloning plants and science Step 3: Detail reading Fill in the chart using the information from the text. (1)Problems

8、 or dangers of cloning: a)Animals may_____ ________ _______ of older animals. b)Animal clones may _____ _______ than the donor animals c)______ _____ may want to clone themselves. d)There are _________ __________ to cloning human beings. (2) Advantages of cloning a)Medical cloning could ______

9、_ ______ for serious degenerative(變質(zhì)的）________ in humans. b)Cloning plants can ______ _______ of similar _______ _______ ________. c)Cloning plants can be _____________ for research on new ________ ________ . d) Cloning can help save ___________ _________ Ⅰ.課文詞匯等填空（旨在復(fù)習(xí)本課文中的單詞拼寫和主要詞語等） 根據(jù)課

10、文內(nèi)容完成下面語法填空，注意單詞拼寫和詞語用法： Cloning is a way of _____1_____(make) an exact copy of another animal or plant. Cloning has two ___2____(主要的) uses. Firstly, gardeners use it to produce plants. Secondly, it is ____3_____(value) for medical research on animals. Cloning plants is straightforward but the clon

11、ing of animals is more____4______(復(fù)雜的). The procedure is difficult to ____5_____(開展). In 1996, scientists succeeded in ___6_____(clone)Dolly the sheep. Then came the disturbing news that Dolly was ill. _____7______ Dolly lived for six years, Dolly’s appearance raised a storm of _____8_____(object).

12、Government became nervous and many ______9______(禁止) research into human cloning. Scientists still ____10______ whether cloning will help or harm us and where it is leading us. 小結(jié)與反思 家庭作業(yè)(獨(dú)立完成后再看參考答案) .課文佳句背誦與仿寫 （旨在培養(yǎng)對(duì)難句的理解和寫作能力） 1.【原句】The fact that she seemed to develop normally was very

13、encouraging. 多莉看來是在正常地成長(zhǎng)著，這很令人鼓舞。 [模仿要點(diǎn)] 句子結(jié)構(gòu)：同位語從句 【模仿1】學(xué)校取消體育運(yùn)動(dòng)的想法非常令人喪氣，依我的觀點(diǎn)，這并不能防止學(xué)生受傷。 _______________________________________________________________________________________________________________________________________________________________________________________________________

14、【模仿2】諺語“誠(chéng)為上策”是眾所周知的，它說明了誠(chéng)實(shí)的重要性。 _____________________________________________________________________________________________________________________________________________________ 2．【原句】The advantage is that if there is a new illness some of these animals my die, but others will survive and pass

15、 on the ability to resist that disease to the next generation. 其優(yōu)點(diǎn)是，如果發(fā)生了某種新的疾病，這類動(dòng)物可能會(huì)死去，而另外一些卻能存活下來，并且把這種抗疫力傳給下一代。 [模仿要點(diǎn)] 句子結(jié)構(gòu)：表語從句+條件句, 【模仿1】網(wǎng)上購物的弊端是，如果你在網(wǎng)上買了質(zhì)量差的商品，你不可能會(huì)換的了；但你可以在真正的商店里精挑細(xì)選。 ______________________________________________________________________________________________________

16、__________________________________________________________________________________________________________ 【模仿2】早起的優(yōu)勢(shì)是，如果我們?cè)缙?，我們將有機(jī)會(huì)享受清新的空氣和早晨的寧靜，但并不是每個(gè)人都認(rèn)為這是令人遺憾的事情。 ___________________________________________________________________________________________________________________________________

17、______________________________________________________________________________ 3. 【原句】Based on what we know now, you cannot clone animals that have been extinct longer than 10,000 years. 就我們現(xiàn)在所知，你不可能克隆那些絕種了一萬年以上的動(dòng)物。 [模仿要點(diǎn)] 句子結(jié)構(gòu)：V-ed + what引導(dǎo)的賓語從句，+主句+定語從句 【模仿1】根據(jù)調(diào)查所示，我們可以更好地理解我們對(duì)大自然所做的一切。 _____

18、______________________________________________________________________________________________________________________________________________ 【模仿2】根據(jù)我們所讀到的，我們可以得出結(jié)論是人類該對(duì)環(huán)境污染負(fù)責(zé)。 ___________________________________________________________________________________ 1.【模仿1】答案：The idea that schools c

19、ancel sport activities is very discouraging, which, in my opinion, is not a good way to prevent students from getting hurt. 【模仿2】答案：The old saying that honesty is the best policy is well known to everyone, which signifies the importance of honesty. 2. 【模仿1】答案：The disadvantage of shopping on line

20、is that if you bought a poorly made goods on the Internet, it is impossible for you to change it, but you can have a careful look at the goods in a real shop and choose the best one. 【模仿2】答案：The advantage of getting up early is that if we get up early, we will have the opportunity of enjoying the f

21、resh air and calmness of the morning, but not everybody think it a regrettable thing. 3. 【模仿1】答案：Based on what was shown on the survey, we can make a better understanding about the thing that we have done to nature. 【模仿2】答案： Based on what we’ve read , we can make a conclusion that it is human beings that are to blame for the pollution of the environment.