高二英語人教版選修8教案：Unit2CloningPeriod2Word版含解析

1、Unit 2 CloningPeriod 2 Language Study整體設(shè)計教學內(nèi)容分析The emphasis of this period will be placed on the important new words , phrases and sentence patterns in Warming Up, Pre-reading , Reading ,Comprehending and Discovering useful words and expressions in Learning about Language.There are altogether 44 new

2、 words and phrases in these five parts.8 of them are marked with triangles , which shows that the students neednt learn them by heart.It is enough to recognize them when meeting them while reading the passage.The other 36 should all be remembered , among which the following words and expressions are

3、 even more important: straightforward , cast down , altogether, in favour of , compulsory , owe, retire , differ , undertake, pay off, object, objection , obtain, forbid.They are all very useful and important.We ought to pay more attention to them.三維目標設(shè)計Knowledge and skillsTo get the students to lea

4、rn to use the following important new words and phrases freely : straightforward , cast down, altogether, in favour of, compulsory , owe, retire, differ , undertake, pay off, object, objection , obtain, forbid.Process and methodsTo help the students understand the meanings of the above useful new wo

5、rds and expressions in the context , and then give some explanations about them , and at last offer some exercises to make students master their usages.At the end of the class , make students do more exercises for consolidation.In doing so , they can learn, grasp and use these important language poi

6、nts well.Emotion , attitude and valueTo stimulate students interest in learning English.To develop students sense of cooperation and teamwork.教學重點、難點Important new words and expressions ： differ, undertake, pay off, object, objection , obtain, forbid.Some difficult and long sentences in the text.教學過程

7、Step 1 RevisionCheck the homework exercises.Ask some students to talk about cloning.Step 2 Reading and findingGet students to read through Warming Up, Pre-reading , Reading, Comprehending and Discovering useful words and expressions in Learning about Language to underline all the new words and usefu

8、l expressions or collocations in these parts.Read them aloud and copy them down in the exercise book.Step 3 Exercises for useful words and expressionsTurn to Page 13.Go through the exercises in Discovering useful words and expressions with students and make sure they know what to do.Give them severa

9、l minutes to finish the exercises.They first do them individually , and then discuss and check them with their partners.Check the answers with the whole class and explain the problems they meet wherenecessary.Step 4 Vocabulary studyI .簡單知識掃描(A級)straightforward (P11)【原句再現(xiàn)】Cloning plants is straightfo

10、rward while cloning animals is very complicated.克隆植物簡單，而克隆動物很復(fù)雜?！居^察探究】Installing the program is relatively straightforward. 安裝這個程序相對比較簡單。The report was written in straightforward language.那個報告是用淺顯的文字寫成的。My father is straightforward in his dealings.我爸爸做買賣(待人)正直。Is this a straightforward route to the

11、beach ?這是到海灘去的直道嗎？【歸納總結(jié)】straightforward adj.簡單的,易懂的；坦誠的，坦率的；直的【知識鏈接】straightforwardly adv.率直地，坦誠地straightforwardness n.率直【即景活用】翻譯下列句子Id like to listen to a straightforward explanation.Jack is rough , but always straightforward.She admired his straightforwardness.Suggested answers:(1)我愿意聽率直的解釋。(2)杰克很

12、粗野，但卻總是很坦誠。(3)她很欣賞他的率直。cast down (P12)【原句再現(xiàn)】Cloning scientists were cast_down to find that Dollys illnesses were more appropriate to a much older animal.研究克隆的科學家發(fā)現(xiàn)多莉得的病更容易發(fā)生在年老的羊身上，這讓他們很沮喪。【觀察探究】She was much cast down at the news that she failed in the exam.聽到考試失利的消息她非常沮喪。He is not easily cast down.

13、很少見他情緒低落。Dont let yourself be cast down by a small failure in the experiment ; try again.別為了實驗中的小小失敗而垂頭喪氣，再試下去?！練w納總結(jié)】cast down沮喪，不愉快(多用于被動語態(tài))【知識鏈接】cast v. 扔；投；擲。如：He cast a stone into the river.他向河中投了一塊石子?！炯淳盎钣谩糠g下列句子不要這么沮喪，打起精神來！聽到這個消息他很沮喪。Suggested answers:Dont be so cast down.Just keep up your sp

14、irits.He was cast down to hear the news.altogether (P12)【原句再現(xiàn)】Altogether Dolly lived six and a half years. 多莉總共活了 6年半【觀察探究】You owe me $68 altogether.你總共欠我 68 美元。I am altogether on your side in this matter.在這個問題上我完全支持你。Altogether , exports are looking up.總的說來,出口貿(mào)易在好轉(zhuǎn)。【歸納總結(jié)】altogether adv.總共；完全地；總的說來，

15、總而言之【知識鏈接】for altogether永久地；一勞永逸地altogether, all together 和 together 辨析CD altogether adv.總共，完全地；總之，總而言之“。如：He bought altogether 500 hectares of land.他總共買了五百公頃土地。all together同時，在一起“，指 全部在同一地方或同一時間”。如：Can you put your books all together in this box?你能將你的書全部一起放在這個箱子里嗎？(3)together adv.在一起，共同地 ”。如：All hi

16、s trouble seemed to come together.他所有的麻煩似乎都一起來了。 【即景活用】Hes bad-tempered, selfish and an unpopular man.A. thereforeB. altogetherC. otherwiseD. anyhowYoud better put the plates after supper.A . altogether B. in all C. in total D . all together (3) An expert, with some assistants, was sent to help in t

17、his work.A . together B . altogetherC. all together D . thereforeSuggested answers: (1) B D ( 3) Ain favour of (P12)【原句再現(xiàn)】Is it in_favour of cloning or against it ? 是支持克隆還是反對？ 【觀藁探究】一I have told her about our plan , and she is in favour of it.我對她講了我們的計劃，她表示贊同。Most citizens are now in favour of a cut

18、 in tax.絕大多數(shù)市民贊成減稅。There were 247 votes in favour and 152 against.有247票贊成，152票反對?！練w納總結(jié)】in favour (of)贊成；支持 【知識鏈接】in sb.s favour對某人有利的(地)”。如：The exchange rate is in our favour at the moment.目前匯率對我們有利。in favour with sb.受某人支持“。如：Shes not in favour with the media just now.目前她沒有媒體的支持。do sb.a favour = do

19、a favour for sb. 幫某人忙 “。如：Could you do me a favour to pick up Sam from school today?今天你能幫我個忙去學校接薩姆嗎？【即景活用】(1)公眾輿論正在強烈支持裁軍。Public opinion was moving strongly disarmament.(2)你會贊成還是反對他的意見？Are you or his opinion?(3)他們爭論的結(jié)果對李先生有利。The result of their discussion was.Suggested answers ： (1) in favour of (2)

20、 in favour of , against(3) in Mr.Lis favourcompulsory (P13)【原句再現(xiàn)】According to the constitution , it is compulsory for a citizen to undertake military service.根據(jù)憲法規(guī)定，服兵役是公民的一項義務(wù)?！居^察探究】I think it is compulsory.我認為這是非做不可的。Education is compulsory for children in most countries.多數(shù)國家對兒童實施義務(wù)教育。Is English a

21、 compulsory subject ?英語是必修科目嗎？【歸納總結(jié)】compulsory adj.必須做的；義務(wù)的；強制的；強迫的；必修的【即景活用】(1)我國實行義務(wù)兵役制。We have a military service system in our country.(2)英國實行義務(wù)教育。in Britain.Suggested answers: (1) compulsory(2) Education is compulsoryowe (P13)【原句再現(xiàn)】You owe the lady an apology.你欠這位女士一個道歉?！居^察探究】I owe the landlord

22、 one hundred dollars. ( = I owe one hundred dollars to the landlord.)我欠房東一百美元。We owe to Newton the principle of gravitation.我們?nèi)颗ｎD才知道引力的原理。【歸納總結(jié)】owe vt.欠(債、賬、錢、人情等)；歸功于【即景活用】你應(yīng)該給自己安排個假期。You a holiday.Suggestedanswer： owe yourselfretire (P13)【原句再現(xiàn)】.when he retired he would be able to look back on his

23、 life with satisfaction.當他退休的時候，他能夠滿意地回顧自己的生活。【觀察探究】Mr.Weller retired last month and now lives at his ease.韋勒先生上個月退休了，現(xiàn)在過著悠閑的生活。The general retired as soon as he reached sixty.那位將軍一到六十歲就退役了。She retired to the country.她退隱到鄉(xiāng)下去了?！練w納總結(jié)】retire vi.退休;退役；隱退【即景活用】我爺爺是一位退休工人。My grandpa is a.Suggestedanswer：

24、retired workern .重點知識探究(b級)differ (P10)【原句再現(xiàn)】Think about how they differ.考慮一下它們有什么不同?！居^察探究】Customs differ in different countries.各國風俗不同。2) We differ about the matter.我們在這件事情上意見不同。I am sorry to say that I differ with you about /on/over that.對不起，在那一點上我與你意見不同。His opinion differs entirely from mine.他的意見

25、和我的完全不同?！練w納總結(jié)】differ vi.不同，相異，不同意，持不同看法differ (with sb.) about/ on/ over sth.(與某人)在某方面意見不同differ from 與不同【知識鏈接】agree to differ 求同存異difference n.不同，差異 make a difference起作用；發(fā)生影響different adj.不同的，不一樣的be different from 與不同【即景活用】(1)完成句子My new school is very(與不同) the old one.In this respect French(與不同) En

26、glish.There are many (不同)between the two languages.There was not really much (不同)in their points of view.(2)選擇最佳答案Leaves are found on all kinds of trees , but they differ greatly size and shape.A . on B . from C. by D. inSuggested answers ： (1) CD different from differs from (Ddifferences difference

27、Dundertake (P11)【原句再現(xiàn)】It is a difficult task to undertake.那干起來是一件困難的工作?！居^察探究】1) She undertook the organization of the whole scheme.她負責整個計劃的組織工作。2) Who do you think is the right person to undertake the post?你認為誰是擔任這個職位的合適人選？3) He undertook to be here at ten oclock.他答應(yīng)十點鐘到這兒來?！練w納總結(jié)】undertake vi. (unde

28、rtook, undertaken)著手，從事；負責，承擔；答應(yīng)，承諾undertake to do sth.答應(yīng)/承諾做某事【知識鏈接】undertaking n.任務(wù)；事業(yè)；企業(yè)【即景活用】完成句子She herself (承擔)the preparation of the room.He undertook at five.(他答應(yīng)五點鐘到這里來。)Suggested answers ： (1) undertook(2) to be herepay off (P11)【原句再現(xiàn)】But at last the determination and patience of the scien

29、tists paid off in 1996 with a breakthrough the cloning of Dolly the sheep.但是，決心和耐心使科學家們最終于1996年收獲了突破性的結(jié)果 一一克隆羊 多莉”。【觀察探究】John studied hard before the examination , and it paid off.約翰考試前學習很刻苦，這得到了回報。It took them three years to pay off their debts.他們用了 3年才還清了債務(wù)?！練w納總結(jié)】pay off得到好結(jié)果，取得成功；償清【知識鏈接】pay for對

30、付錢；為付出代價 ”。如：If you dont work hard now , youll pay for it later when you fail your exams.你現(xiàn)在不好好學習，到考試不及格時就得為此付出代價。pay back償還，報復(fù)pay out花費；支出pay up (不情愿地)付清；還清(債務(wù))【即景活用】He worked hard before the College Entrance Examination , and it.His dream of going to college came true.A. showed off B. paid off C.

31、put off D. took offHe borrowed $1000 from the bank and was given ten months to the loan.A . pay back B . pay for C. pay off D . pay in翻譯：Ill pay him back for treating me like that.Suggested answers: (1) B (2) A (3)他那么對待我，我會報復(fù)他的。objection (P12)【原句再現(xiàn)】On the other hand, Dollys appearance raised a storm

32、 of objections.另一方面，多莉羊的出現(xiàn)引起了強烈的反對【觀察探究】I have/ take/ make no objection to their plan.我不反對他們的計劃。No objections were raised at the time.當時沒人提出異議?！練w納總結(jié)】objection n.反對，不贊成have/ take/ make an objection to ( doing) sth.對表示反對raise an objection/ objections to sth.對提出異議【知識鏈接】(1) object vi.意為 不贊成，反對。object常與介

33、詞to連用，構(gòu)成短語object to (doing) sth.意為反對(做)某事”。如：No one objected to the plan.沒有人反對這項計劃。We objected to leaving in such a hurry.我們反對這樣匆忙地離開。The students objected to being treated like children.學生們反對像對待孩子似地對待他們。(2) object還可用作名詞，意為 物體，物品；目的；目標；賓語 如：I saw an object in the sky , but I didnt know what it was.我

34、看見天空中有個物體，可是我不知道它是什么。I only want to buy some common household objects here.我只是想在這兒買些普通家庭用品。His object of studying English is to know more about England and the English people.他學習英語的目的是更多地了解英國和英國人民。Her sole object in life is to become a travel writer.她人生的唯一目標就是當游記作家。(3)表示 反對， 不贊成”的詞語還有： oppose, be op

35、posed to, be against, argue against, disapprove 等。【即景活用】11) Many teachers strongly object to at school.A . smoke B. smokingC. smoked D. having smoked(2) We to punishing a whole group for one persons fault.A . complain B . object C. oppose D. resist Suggested answers: (1) B B 5. obtain (P12) 【原句再現(xiàn)】Al

36、though at present human egg cells and embryos needed for cloning research are difficult to obtain, newspapers wrote of evil leaders hoping to clone themselves to attain their ambitions.盡管目前克隆研究所需要的人類卵細胞和胚胎很難獲得，但據(jù)報載，有些罪惡的領(lǐng)導(dǎo)人希望克隆自己以實現(xiàn)他們的野心?！居^察探究】She has to obtain her parents permission before she does

37、 anything.她在做任何事情之前必須得到父母的允許。The scientists wished to obtain the first- hand information by talking with the farmers.科學家們希望通過和農(nóng)民交談得到第一手資料。3) Details can be obtained from the Department for Education.可以從教育部獲知詳情。 【歸納總結(jié)】obtain vt.獲得；贏得obtain sth.by doing sth.通過做某事獲取某物obtain sth.from sb. / sth.從某人/物處獲得/

38、獲取某物 【知識鏈接】obtain, attain, get, gain, earn, win 辨析。obtain vt.應(yīng)用范圍較廣，指經(jīng)過買、借、拿等 獲得，得到”某物。含有 如期地達 到目的或得到所希望的東西”之意。如：He always manages to obtain what he wants.他總是設(shè)法得到他想要的東西。attain vt.指經(jīng)過努力 獲得“。如：Leo Ioacoco attained the position of President of the Ford Motors.李雅科卡終于當上了福特汽車公司的總裁。get vt.最常用，可指主動去獲得,得到”，有

39、時指不一定需要主動性或付出很大努力就能 得到”，甚至可能是被迫接受”。如：Did they get any compensation when they were dismissed from their jobs? 他們被解雇時有沒有得到賠償費？She got a bad cold yesterday.她昨天得了重感冒。gain vt.指通過斗爭、競爭或付出勞動而獲得某種優(yōu)勢或達到某種目的。其賓語通 常是經(jīng)驗、優(yōu)勢、利益、好處等。如：She gained rich experience in teaching.她獲得了豐富的教學經(jīng)驗。Only after ten years in the c

40、ountry did she gain her citizenship.她在這個國家住了十年后才取得了公民身份。earn vt.表示經(jīng)過艱苦努力而得到報酬，或得到了理應(yīng)享有的某種待遇，其賓語多 為金錢、榮譽等。如：He earns wages of 800 dollars a month.他月薪八百美元。win v.多指在競賽中獲得，贏得”，有時也用于指在戰(zhàn)爭中獲得勝利，賓語通常是比賽、戰(zhàn)斗、戰(zhàn)爭等。如：They won the basketball match.他們打贏了這場籃球賽。【即景活用】No one can great achievements unless he concentrates on what he is doing, eventhough a talent.A . attain B. attract C. apply D. obtainSuggestedanswer： Aforbid (P12)【原句再現(xiàn)】Some began to reform their legal systems and forbade research into human cloning.一些國家開始修改法律體系，禁止克隆人的研究【觀察探究】The government forbade the meeting.政府禁止舉行這次會議。His