2020年高中英語Unit3ReadingII教案牛津譯林版選擇性必修第二冊

1、PAGE PAGE 5Unit 3 Fit for lifeReading (II)內(nèi)容分析： 【W(wǎng)hat】本板塊的話題為“基因組編輯”，語篇來自一位生物學(xué)家的演講稿。演講者首先介紹了基因和基因組的概念和作用；然后描述了基因組編輯技術(shù)如何用以治療和預(yù)防種種疾?。浑S后話鋒一轉(zhuǎn)，點(diǎn)出這一技術(shù)的不正當(dāng)使用可能引發(fā)道德等層面的問題；最后展望未來，對基因組編輯這一革命性的醫(yī)學(xué)技術(shù)予以肯定?！網(wǎng)hy】演講者清晰而鮮明地表達(dá)了對基因組編輯技術(shù)的態(tài)度：一方面是肯定、興奮，另一方面則是嚴(yán)肅、謹(jǐn)慎。對尖端科技的解釋和展望有助于學(xué)生了解醫(yī)學(xué)進(jìn)步對人類生命健康和未來社會發(fā)展的重要意義和積極影響，激發(fā)學(xué)生的創(chuàng)新精神；對

2、這項(xiàng)技術(shù)潛在風(fēng)險(xiǎn)的分析則提醒學(xué)生要理性思考，以嚴(yán)謹(jǐn)、科學(xué)的態(tài)度辯證地看待醫(yī)學(xué)發(fā)展，學(xué)會尊重生命、尊重科學(xué)。【How】本文的語篇類型是演講稿。演講標(biāo)題既點(diǎn)明主旨又飽含深意；演講者由淺入深、循序漸進(jìn)地為聽眾呈現(xiàn)了生物醫(yī)學(xué)的相關(guān)知識，主題鮮明，脈絡(luò)清晰。在語言特點(diǎn)上，演講者采用了簡明通俗的語言對“基因”“基因組編輯”“設(shè)計(jì)嬰兒”等科學(xué)名詞進(jìn)行相應(yīng)的解釋，并多次采用舉例、反問、比喻等手法闡明道理，激發(fā)聽眾對話題的興趣。學(xué)習(xí)本篇有助于學(xué)生掌握演講的格式和特點(diǎn)，有意識地用英語來學(xué)習(xí)其他學(xué)科的知識。教學(xué)目標(biāo)：By the end of this section, students will be able

3、to:1.understand the usage of the key words and expressions:2.use the above words and expressions in new situations;3.have a better understanding of the outline and key information of the news report.教學(xué)重難點(diǎn)：1.Understand some new words and expressions;2.Be able to use the new words and expressions corr

4、ectly.教學(xué)過程：Step 1 Lead-inRead the passage and underline the following key words and expressions.Step 2 Building vocabulary1.Word study: contractIntroduce the meaning of “contract” through different situations, first the context of the speech and then other situations.Collocations of “contract”.Exerc

5、ises of “contract”: Practice makes perfect.Tests found that they were more likely to feel a sense of fear at the moment when their heats are _ (contract) and pumping blood around the bodies.Other organizations such as banks ask customers to sign long _ (contract) they may not read or understand.It c

6、riticizes the main _ (contract) for seriously erring in their estimates. 2.Word study: identifyIntroduce the meaning of “identify” through different situations, first the context of the speech and then other situations.Collocations of “identify”.Exercises of “identify”: Practice makes perfect.He was

7、 too far away to be able _ (identify) faces.Scientists _ (identify) a link between diet and cancer.You should not identify wealth _ happiness.3.Word study: relateIntroduce the meaning of “relate” through different situations, first the context of the speech and then other situations.Collocations of

8、“relate”.Exercises of “relate”: Practice makes perfect.In the future, pay increases will _(relate) productivity.He _(relate) the facts of the case _ journalists. According to experts, the amount of time spent watching TV _ _ _ _ (not relate) reading ability.4.Word study: applyIntroduce the meaning o

9、f “apply” through different situations, first the context of the speech and then other situations.Collocations of “apply”.Exercises of “apply”: Practice makes perfect.The advertisement for engineers on the Internet attracted many _ (apply).The mans _(apply) for membership of the club was turned down

10、.Apply the cream evenly _ your face and neck.6.Word study: restoreIntroduce the meaning of “restore” with through different situations, first the context of the speech and then other situations.Exercises of “restore”: Practice makes perfect.The family not only returned the important documents to us

11、that day but also _ (restore) our faith and trust in people.The _ (restore) took about four years.7. Word study: fundamentalIntroduce the meaning of “fundamental” together with relevant exercises.Exercises of “fundamental”: Practice makes perfect.Fresh air is fundamental _ good health.In line with t

12、his, Jeff Warren tells us that the way we sleep has changed _ (fundamental) since the invention of artificial lightning and the electric bulb.8. Word study: ariseIntroduce the meaning of “arise” together with relevant exercises.Exercises of “arise”: Practice makes perfect.A number of high buildings

13、_ _ (arise) where there was nothing in a year, but ruins.Accidents often arise _ carelessness.Not all problems _ (arise) from social discrimination can be addressed through communication.9. Word study: restrictIntroduce the meaning of “restrict” together with relevant exercises.Exercises of “restric

14、t”: Practice makes perfect.This time as an expert witness, he used environmental protection laws to explain _ (restrict) on development in and around wetlands.The biggest _ (restrict) on our resources is the number of hours we can devote to something, so we look to maximize the return we get on our

15、investment of time.On top of that, most of the 3D food printers now _ _ (restrict) to dry ingredients, because meat and milk products may easily go bad.10. Word study: prohibitIntroduce the meaning of “prohibit” together with relevant exercises.Exercises of “prohibit”: Practice makes perfect.The pla

16、stic bags_ _ (prohibit) in some 90 cities in California, including Los Angeles.Please note that any _ (prohibit) items will be taken away by the Office of Residence Life.In 1897, the state of Michigan passed a law _ (prohibit) the killing of passenger pigeons.11. Word study: resistanceIntroduce the

17、meaning of “resistance” together with relevant exercises.Exercises of “resistance”: Practice makes perfect.The _ (resist) to vaccine has continued for decades, and it is driven by a real but very small risk.The more pesticides are used, the more _ (resist) the insects become.It is the easiest of crops to grow and is seemingly _ (resist) to any disease.12.Phrase study: put.in placeIntr