江西省吉安市井冈山大学附中高中英语《Unit2 Cloning 》导学案（五）新人教版选修8.doc

江西省吉安市井冈山大学附中高中英语 新人教版选修八unit2 cloning 导学案（四）一、导案1. 分娩 2. 不时；偶尔 3. 徒劳 4. 将某物传递给某人5. _死于 6. _ 注定7. _过着。的 生活 8 . _以。为基础 二、课内探究学案探究1 fast readingread the passage quickly and find out the main idea about the text._.探究2 careful reading i. answer the following questions:1. why shouldnt you clone an extinct animal if there isnt enough diversity in the group? _.2. why is it wrong to clone an extinct animal if it would have to live in a zoo? _.3. why cant you clone the dna of animals that have been extinct longer than 10,000 years? _.1. ii. make the best choice according to passage.1. the film jurassic park is popular because _. a. people are interested in the subject of cloning b. all the actors are dinosaurs c. it was directed by a scientist who clones dinosaurs d. it proves very interesting2. which of the following is true?_amice were cloned in 1981. b. dolly the sheep was the first cloned animal.c. the name of the cloned cow is “bison” d. china was successful in cloning mammals.3. the reasons why a group of cloned animals all die of the same illness do not include_ a. they have the same arrangement of genes b. there isnt enough diversity in the group for it to overcome illnessesc. the illness is a new oned. their arrangement of genes can not resist that new disease4. we can infer from the text that_ a. scientists are experimenting to clone dinosaurs b. dinosaurs will never return to the earthc. cloned animals will only live in the zoo d. the dna of dinosaurs can only survive 10 000 year 探究3 study readingread the text again, find out the sentences and analyse them.【观察探究】he only comes to the company from time to time.他只是偶尔到公司来。【归纳总结】from time to time_，_，_，等于_,_。即时练习翻译_.他有时变得很没有道理。3. 【原文再现】it is useless to clone an animal if there is not enough diversity in the group for it to overcome illnesses. 译：_. 句式透析当_、_或_作主语时, 通常把它们放在谓语之后, 而用_作句子的形式主语。4. 【原文再现】diversity in a group means having animals with their genes arranged in different ways. 译：_. 句式透析 with their genes arranged in different ways作_, in different ways 意思是_。5. 【原文再现】.but others will survive and pass on the ability to resist that disease to their children. 译：_.【观察探究】they resisted the attack.他们抵抗那次攻击。she resisted being carried off.她拒绝被带走。the material resists water.这材料是防水的。she could not resist the temptation.她无法抗拒那项诱惑。归纳拓展resist作及物动词主要有三个义项：_，_；_；（与cannot， could not 连用）_,_。即时练习翻译_.我无法抵挡巧克力。6. 【原文再现】based on what we know now, you can not clone animals that have been extinct longer than 10000 years. 译：_.【观察探究】you must base your words on facts.你说话要有事实根据。规则提示base on/upon_，_，其结构为_或_。即时练习翻译_.这种结论是怎么得来的？三、练案 i. 选用合适的词或短语，并用其适当形式填空。cast down;pay off;in favour of;from time to time;be bound to1.she was by her husbands death.2.my uncle comes to have dinner with us.3.he has been working so hard at his lessons, so he pass the exam this time.4.finally his efforts .5. all of them were strongly_ the project.4. the genes of the cloned animal are so arranged that it can not _ such a disease, so it soon died. a. keep b. stop c. exist d. resist5. the movie is based_ historical fact.a. to b. on c. with d. in四、homework 1. remember the new words for dictation. 2. preview the grammar.答案3. the dna of animals more than 10,000 years old is not suitable for cloning, for it cant survive so long.3. 【原文再现】该群中如果没有足够的多样性使它克服疾病,克隆动物就没有用。句式透析 当动词不定式、动名词或从句作主语时, 通常把它们放在谓语之后, 而用it作句子的形式主语。即时练习单项填空(1) a(2) d(3) c4. 【原文再现】群中的多样性指的是拥有基因排列方式不同的动物。句式透析 with their genes arranged in different way