高考英语大一轮复习第1部分Unit2Cloning教案含解析新人教版选修8

Unit 2 Cloning[单词拼写应用]核心单词1．altogether adv.总共；完全地2．forbid vt.禁止；不准3．obtain vt.获得；赢得4．owe vt.欠(账、钱、人情等)；归功于……5．shortly adv.立刻；不久6．bother vt.打扰vi.操心n．烦扰7．strike vt.& vi.打；撞击；罢工n．罢工8．drawback n．缺点；不利条件9．undertake vt.着手；从事；承担10．breakthrough n．突破11．retire vi.退休；离开12．resist vt.抵抗；对抗[语境运用] 用所给词的适当形式填空。

1．We are supposed to_undertake (undertake) the responsibility to lead alow­carbon lifestyle，which is of great significance.2．Nowadays，energy can be_obtained (obtain) through various sources such as oil，coal，natural gas，solar heat，the wind and ocean tides.3．Our school is a non­smoking school.So smoking is_forbidden ( forbid ) here.4．Had I realized you were busy，I wouldn't have_bothered(bother) you with my questions.5．But just as a coin has two sides，Internet has its own drawbacks(drawback)，which should not be neglected.6．Having_retired(retire) from business，he now occupies himself with his garden.拓展单词1．differ vi.不同；相异→different adj.不同的→difference n．差异；不同2．plicate vt.使复杂化→plicated adj.复杂的；难懂的→plication n．复杂3．correct adj.正确的v．改正→correction n．改正；纠正；修正4．object vi.反对；不赞成→objection n．不赞成；反对；异议5．accumulate vt.& vi.积累；聚积→accumulation n．积累；增加6．assume vt.假定；设想→assumption n．假定；设想7．popular adj.流行的；通俗的；受欢迎的→popularity n．受人喜爱；流行8．decorate v．装饰；装修→decoration n．装饰；装修9．reason n．原因；道理→reasonable adj.合情理的；讲道理的；公道的10．exact adj.精确的；准确的→exactly adv.精确地；准确地[语境运用] 用所给词的适当形式填空。

高考英语一轮复习 Unit2《Cloning》知识点学案新人教版选修8 Ⅰ.重要单词聚焦1．differ vi. 不同；相异2．undertake vt. 着手；从事；承担3．Breakthrough n. 突破4．Object vi. 反对；不赞成5．obtain vt. 获得；赢得6．Attain vt. 获得；到达(水平、年龄、状况等)7．forbid vt. 禁止；不准8．Accumulate vt. 积累；聚积9．owe vt. 欠(账、钱、人情等)；归功于……10．shortly adv. 立刻；不久11．retire vi. 退休；离开12．bother vt.& vi. 打扰；操心13．assumption n. 假定；设想14．regulatio n n. 规则；规章；法规15．strike vi.& vt. 打；撞击；罢工16．vain adj. 虚荣的；自负的；徒劳的17．resist vt. 抵抗；对抗18．merely adv. 仅；只；不过19．decoration n. 装饰20．adore vt. 崇拜；爱慕；喜爱21．reasonable adj. 合情理的；讲道理的；公道的Ⅱ.重要短语扫描1．pay off得到好结果；取得成功；偿清2．cast down 沮丧；不愉快3．in favour of 赞成；支持4．(be) bound to (do)．.. 一定或注定(做)……5．strike...into one’s heart 使……刻骨铭心6．from time to time 不时；偶尔7．bring back to life 使复生；使复活8．in vain 白费力气；枉费心机9．in good/poor condition 状况很好(坏)；情况很好(坏)10．have a great impact on 对……有很大影响Ⅲ.课文原句突破1．Then came the disturbing news that Dolly had b ecome seriously ill.Cloning scientists were cast down to find that Dolly’s illnesses were more appropriate to a much older animal.[信息提取] be appropriate to (for) sth.适合于……的；适当的。

Unit 2 CloningStep 1 课前打算——单元考点自查自测1.词汇分层级识记过关2.语境活用填写过关3.经典句式背诵仿写过关4.类词巧积累事半功倍(一)分门别类攻单词——识形辨意·拓展应用(二)写用结合记短语——译写短语·语境活用(三)仿写活用练句式——经典句型·仿写背诵Step 2 课堂探究——核心考点点点突破1.重点难点考点学通练透2.归纳总结拓绽开阔视野3.方法规律技巧权威点拨4.四平八稳打创高效课堂第一时段Warming up & Reading1．differ vi. 不同；相异[教材原句] Think about how they differ.考虑它们怎样不同。

(1)differ from 不同于……；和……不同differ in 在……方面不同differ with sb. on/about/over sth.在某事上和某人有分歧/异议(2)difference n. 不同之处make a difference to... 对……有影响/起作用tell the difference between A and B分清A和B(3)different adj. 不同的be different from... in... 在……方面与……不同单句语法填空①Chinese eating and drinking habits differ greatly ________ those in the West.②Was it on the matter of finance that they differed ________ each other?③Leaves are found on all kinds of trees, but they differ greatly ________ size and shape.④What you have told me may make a difference ________ my own position.⑤________(differ) from cars, cycling is a means of environmentally friendly transportation.句型转换⑥That fashion is different from country to country may reflect the cultural differences from one aspect.→That fashion ________________________ may reflect the cultural differences from one aspect.[答案]①from ②with ③in ④to ⑤Differing⑥differs from country to country2．undertake vt. 着手；从事；担当[教材原句] It is a difficult task to undertake.这是一项很难完成的任务。

Unit 2 Cloning克隆晨读·记忆Be Careful about CloningAfter a series of initial experiments and corrections, the scientist’s hard work paid off when the twin clone turkeys were hatched with normal feather and claws. This breakthrough possibly enabled people to bring their adored pets back to life. However, it bothered him from time to time that their health was in poor condition because they were unable to resist illnesses. This drawback cast him down. Merely 2 weeks later, the clones and their carrier died, which struck frustration into his heart. He retired before he attained his ambition and became a member of an opera chorus to relieve his depression.Shortly afterwards, the media published a conservative argument objecting to cloning owing to moral problems, and suggested the constitution include compulsory regulations to forbid obtaining commercial profits from cloning.When interviewed, the scientist stared at the decorations on the ceiling, thinking for a while, and then said, “I’m not in favour of any arbitrary assumption, but undertaking cloning does differ from the straightforward procedure of making loafs out of flour. Until we accumulate enough exact knowledge, any practice is in vain and is bound to fail. Altogether, being more careful is reasonable or we may walk into a side road.”谨慎对待克隆在最初一系列的实验和修正之后，科学家的辛苦工作终于取得了成功，一对双生的克隆火鸡孵化出来，羽毛和爪子都很正常。

[单词拼写应用] 核心单词．.总共；完全地．.禁止；不准．.获得；赢得．.欠(账、钱、人情等)；归功于……．.立刻；不久．.打扰 .操心．烦扰． .打；撞击；罢工．罢工．．缺点；不利条件．.着手；从事；承担．．突破．.退休；离开．.抵抗；对抗[语境运用] 用所给词的适当形式填空。

． () ­ ， .．， () ，，，， .．­ ( ) .．， ' () .．， ()， .．() ， .拓展单词． .不同；相异→.不同的→．差异；不同． .使复杂化→.复杂的；难懂的→．复杂． .正确的．改正→．改正；纠正；修正． .反对；不赞成→．不赞成；反对；异议． .积累；聚积→．积累；增加． .假定；设想→．假定；设想． .流行的；通俗的；受欢迎的→．受人喜爱；流行．．装饰；装修→．装饰；装修．．原因；道理→.合情理的；讲道理的；公道的． .精确的；准确的→.精确地；准确地[语境运用] 用所给词的适当形式填空。

． .()．，，， .()．， .()．' .()． ' ．()．．()阅读词汇． .简单的；直接的；坦率的．．双胞胎之一；孪生儿之一.成对的；成双的． .扔；投；掷．．程序；步骤；手续．．媒介；手段；工具． .必须做的；义务的；强迫的；强制的． .崇拜；爱慕；喜爱．．歌剧；歌剧团；歌剧院． .道德(上)的；伦理的． .最初的；开始的． .虚荣的；自负的；徒劳的拓展联想.“动词＋副词”构成的合成名词①缺点②崩溃；故障③告别④反馈⑤­计划；组织⑥­分手；中断.表示“反对；拒绝”的词荟萃① .反对②．反对③ .反对④ .不同意⑤ .拒绝⑥．拒绝形近词集锦① ．抵抗②．坚持③．协助④．助手⑤ .由……组成⑥ .始终如一的熟词生义你知道下面句子中黑体词的汉语意思吗？．(·全国卷Ⅰ) , ­­­ . . 临时庇护处；简易的窝．(·天津卷) . 让人觉得．­ . 承诺；答应[短语多维应用]精讲个考纲单词． .不同；相异()单句语法填空①， .②(·全国卷Ⅰ) ， () .③， () .()[链接写作]——完成句子我坚信如果每个人都努力一点，我们将起重大作用。

2020届一轮复习人教版选修八Unit 2Cloning单元教案I．教学内容分析本单元的中心话题是“克隆”，涉及克隆哺乳动物、克隆的历史和是否能够克隆已经绝种的动物所引起的争议等话题。

Warming Up部分呈现一组图片，引入有关克隆的话题，要求学生回答有关是否能区分自然与人工无性繁殖克隆的问题，激发学生对克隆话题的兴趣，既能集中学生的注意力，又为他们学习本课话题做准备。

因为这部分的问题比较有趣，所以能调动学生讨论的积极性，达到热身的效果。

Pre-reading部分要求学生讨论有关克隆的问题，看学生对克隆有多少了解，对这个话题学生想知道什么并有什么启示。

这样可以激活学生的背景知识和思维，为下面的阅读文章做铺垫，并培养学生的想象力和判断力。

Reading部分介绍了植物与动物克隆之间的区别、多莉羊的诞生与死亡以及由此引发的争论。

通过阅读，在训练学生的阅读方法和技能同时，帮助学生进一步认识克隆的意义在于为人类服务。

Learning about Language部分突出了词汇和语法的学习与训练。

本单元的语法是掌握并运用同位语从句及同位语从句与that引导的定语从句的区别。

Using Language部分中包括了读、讨论和写、听三个部分的内容，通过学习“恐龙回归”的阅读材料，了解是否能克隆已经绝种的动物和讨论哪一种动物是最值得克隆及其理由，然后写成一份报告。

听说部分是听一段关于克隆是否对动物残忍的对话并进行讨论，该部分可以激发学生的想象力和语言运用能力。

Learning Tip教导学生要提高英语口语能力，需要长时间地听英国或美国人朗读的磁带，并大声跟读。

I．教学重点和难点1. 教学重点(1) 本单元的生词和短语；(2) 熟练掌握同位语的用法；(3) 了解什么是克隆、克隆的利弊及对克隆技术的反思；(4) 进一步熟悉和运用有关接受与拒绝、表扬与鼓励、不关心的表达方式。

2. 教学难点(1) 了解克隆技术以及有关的争议；(2) 学会发表评论和表达自己的看法；(3) 学写有关表达观点的文章。

Unit 2 Cloning一、课前基础自查(一)分类记单词——省时高效Ⅰ.阅读单词(知其意)1．twin n．双胞胎之一；孪生儿之一adj. 成对的；成双的2．straightforward adj. 简洁的；干脆的；坦率的3．arbitrary adj. 随意的4．medium n. 媒介；手段；工具5．fate n. 命运；天命6．conservative adj. 保守的；守旧的7．constitution n. 宪法；章程8．compulsory adj. 必需做的；义务的；强迫的；强制的9．opera n. 歌剧；歌剧团；歌剧院10．chorus n. 合唱；合唱队11．loaf n. 一条(面包)12．flour n. 面粉13．claw n. 爪；脚爪14．feather n. 羽毛15．turkey n. 火鸡Ⅱ.重点单词(写其形)1．exact adj. 精确的；精确的2．cast vt. 扔；投；掷3．obtain vt. 获得；赢得4.attain vt. 获得；到达(水平、年龄、状况等)5．forbid vt. 禁止；不准6．shortly adv. 立即；不久7．strike v. 打；撞击；罢工n. 罢工8．undertake vt. 着手；从事；担当9．breakthrough n. 突破10．altogether adv. 总共；完全地11．vain adj. 虚荣的；自负的；徒劳的12．owe vt. 欠(账、钱、人情等)；归功于13．initial adj. 最初的；起先的14．bother vt. 打搅vi. 操劳n. 烦扰15．drawback n. 缺点；不利条件16．merely adv. 仅；只；不过17．unable adj. 不能的；不会的18．adore vt. 崇拜；仰慕；宠爱19．hatch v. 孵出；孵卵；孵化20．moral adj. 道德(上)的；伦理的Ⅲ.拓展单词(通其变)1．differ vi.不同；相异→different adj.不同的→difference n．差异；不同2．identical adj.同一的；一模一样的[语境活用]1．From the appearance, we cannot tell the difference between the twins, though they always have some different ideas.(differ)(二)练中记短语——记牢用活(三)仿写明句式——以用为本其优点是假如发生某种新的疾病，这类动物中的一些可能会死掉……is_that_we_can_live_a_low­carbon _life.二、课堂重点深化1．object vi.反对；不赞成n．物体；目标[自主体验]单句语法填空①A majority of students objected to being_arranged (arrange) for extra lessons during holidays and weekends.②As far as I'm concerned, I have an objection (object) to charging for parking.[系统归纳](1)object to 反对；不赞成(to是介词)(2)objection n. 反对；异议；不赞成have/take/make an objection to (doing) sth.对(做)某事表示反对raise an objection to sth. 对某事提出异议(3)objective adj. 客观的；无偏见的；真实的；宾格的[重点强化]易错对对碰(object/oppose)③Sometimes, some students object to the idea that English classes are taught in English.④To my comfort, only a few people opposed building a new bridge.佳句时时写⑤(2024·江苏高考书面表达)停止盲目追随排名很有必要，对于排名我们要持客观看法。

Unit 2 CloningⅠ. 细品味经典文章(2020·浙江高考) Challenging work that requires lots of analytical thinking, planning and other managerial skills might help your brain stay sharp as you age, a study published Wednesday in the journal Neurology suggests.Researchers from the University of Leipzig in Germany gathered more than 1, 000 retired workers who were over age 75 and assessed the volunteers’ memory and thinking skills through a battery of tests. Then, for eight years, the scientists asked the same group to e back to the lab every 18 months to take the same sorts of tests.Those who had held mentally stimulating (刺激) , demanding jobs before retirement tended to do the best on the tests. And they tended to lose cognitive (认知) function at a much slower rate than those with the least mentally challenging jobs. The results held true even after the scientists accounted for the participants’overall health status.“This works just like physical exercise, ” says Francisca Then, who led the study. “After a long r un, you may feel like you’re in pain, you may feel tired. But it makes you fit. After a long day at work—sure, you will feel tired, but it can help your brain stay healthy. ”It’s not just corporate jobs, or even paid work that can help keep your brain fit, Then points out. A waiter’s job, for example, that requires multitasking, teamwork and decisionmaking could be just as stimulating as any highlevel office work. And “running a family household requires highlevel planning and coordinating (协调), ”she says. “You have to organize the activities of the children and take care of the bills and groceries. ”Of course, our brains can decline as we grow older for lots of reasons including other environmental influences or genetic factors. Still, continuing to challenge yourself mentally and keeping your mind busy can only help.Ⅱ. 按要求完成任务1. 写出文章中与本单元话题有关的单词和短语。