2020-2021学年外研版（2019）高中英语 选择性必修第二册学案： UNIT 4 BREAKING BOUNDARIES 教学.doc

1、1assist v帮助，协助assistance n帮助；协助assistant n助手；助理2special adj.特殊的；特别的specialist n专家3infect v感染infection n感染，传染infectious adj.传染性的disinfect vt.给杀菌；为消毒4devote vt.献身于devotion n奉献devoted adj.献身的；热爱的5twin adj.双胞胎的twins n双胞胎devotion n挚爱；关爱；关照；奉献；忠诚；专心；热心His devotion to his wife and family is touching.挚爱，关爱H

2、er devotion to the job left her with very little free time.忠诚；专心As a soldier，he showed selfless devotion to duty.奉献Words and Phrasesassist vt.& vi.帮助，协助(教材P38)It assists people based on need, regardless of which country they are from.它根据需要帮助人们，不管他们来自哪个国家。例1Well do all we can to assist you.我们要尽量帮助你。例

3、2Anyone willing to assist can contact this number.凡愿协助者可拨此号码联系。造句我们正寻找愿意协助该团体工作的人。We are looking for people who would be willing to assist in the groups work.知识拓展(1)assist(sb.)in(doing) sth.帮助(某人)(做)某事assist sb.with sth. 帮助某人做某事assist sb.to do sth. 帮助某人做某事(2)assistant adj. 副的；助理的n. 助手；店员assistance n

4、. 帮助，援助即学即练单句语法填空Two men are assisting the police in/with their enquiries.We will assist you in finding(find) somewhere to live.Bill assisted his friend Mike to establish(establish) a new company.China will continue to increase its assistance(assist) to Africa in both quantity and quality.小片段填空The s

5、hop assistant rushed out of the shop to assist the old lady with her luggage.With his assistance, the old lady crossed the road.(assist)vital adj.极其重要的，必不可少的(教材P38)But it is vital not to take any chances.但重要的是不要冒险。例1Good financial accounts are vital to the success of any enterprise.妥善的财务账目对任何公司的成功都是

6、极其重要的。例2The police play a vital role in our society.警察在我们的社会中起着极其重要的作用。造句现在，我们接着往下讨论今天的重要事宜。Now we move on and discuss the vital business of the day.知识拓展be vital to/for对极其重要；必不可少It is vital that. 极其重要(that从句中谓语用should do形式)of vital importance 至关重要即学即练单句语法填空The quick recognition of disease is vital f

7、or effective treatment.It is vital that we should be kept(keep) informed of all developments.It is without doubt that the development of science and technology is of vital importance(important) to human advancement.at risk处在危险中(教材P38)I knew I was putting my life at risk.我知道我在冒生命危险例1The crisis could

8、well place the relationship at risk.这场危机可能会使这一关系有破裂的危险。例2If they have the virus they are putting patients at risk.如果他们有这种病毒，就会将病人置于危险境地。造句当一种新型流感感染了一个人，那么所有人都有危险。When a new flu infects one human being, all are at risk.知识拓展(1)risk doing.冒险做risk ones health/life 以健康做赌注/冒着生命危险(2)at the risk of(doing).

9、可能导致(不快等)，冒(做)的危险at all risks 无论如何run/take a risk/risks 冒险run/take the risk of(doing).冒(做)的危险即学即练单句语法填空Which team is more willing to take risks(risk)?He got wellprepared for the job interview, for he couldnt risk losing(lose) such a good chance.He was determined to do it even at the risk of being la

10、ughed (laugh) at.(教材P38)My mission was to relieve Emma, a Canadian specialist in infectious diseases at the end of her posting.我的任务是在加拿大传染病专家艾玛任职结束后接替她。(1)specialist n专家，专业工作者例1Peckham, himself a cancer specialist, is well aware of the wide variations in medical practice.佩卡姆本人就是个癌症专家，非常清楚医疗实践中的广泛差异。

11、例2We had better call in a specialist at this critical moment.在这个关键时刻我们最好请一位专家来。造句农民们把他看作专家。The peasants looked upon him as a specialist.知识拓展special adj.特殊的，专门的specialize vi. 专攻，专门从事specialize in. 专攻specialization 专业化即学即练单句语法填空We specialize in creating beautiful, delicious, and truly unique cakes.I t

12、hink weve entered an age of specialization(special)(2)infectious adj.传染性的例1These viruses affect children and are highly infectious.这些病毒会侵袭儿童，而且具有很强的传染性。例2Infectious diseases are spreading among many of the flood victims.传染病正在遭受洪灾的很多灾民中蔓延。造句苍蝇和蚊子是传染病的传播者。Flies and mosquitoes are carriers of infectiou

13、s diseases.知识拓展infect vt.传染；使感染disinfect vt. 为消毒；给杀菌infection n. 传染；感染即学即练单句语法填空When I needed disinfect(infect) the nursing bottles, I would come here to use the microwave oven.Ear infections(infect) are common in preschool children.in ones 50s在某人五十多岁时(教材P38)Alfonso, a softspoken Argentinian doctor

14、in his 50s, who had previously worked on Ebola outbreaks in Sierra Leone and Guinea.阿方索是一位50多岁说话温和的阿根廷医生，此前曾在塞拉利昂和几内亚研究埃博拉疫情的爆发。例1He died when he was in his 50s, much older than some of the early teenage dancers.他是50多岁去世的，比那些青少年时就去世的舞蹈演员年纪大多了。例2The speaker was in his 50s.He was in a blue long gown w

15、hich was faded to pale.那说话人50来岁，一件青布长袍早洗得褪成了蓝灰色。造句不久前，我和50多岁的叔叔在伦敦喝咖啡。I was recently in London sharing a coffee with my uncle, whos in his 50s.知识拓展in ones twenties/thirties在某人二十/三十多岁时in the 1930s 在二十世纪三十年代即学即练单句语法填空When he moved to Germany in the 1930s, he was already in his sixties(sixty)When John

16、began to restore the house in the 1960s, nothing had been touched for 40 years.not to mention更不必说(教材P39)It is so inspiring to have colleagues like Wilton, Maisy and Alfonso, not to mention all the others I have worked with.有哈桑、梅西、阿方索这样的同事，更不用说和我共事过的其他人了，真是太令人鼓舞了。例1We cant afford a car, not to mentio

17、n the fact that we have no garage.我们买不起汽车，没有车库的事就更不必说了。例2The audience，not to mention the bewildered cast，were not amused.观众们并没有觉得好笑，更不用说那一头雾水的演员了。造句潮湿就令人不舒服，更不必说寒冷了。The dampness is uncomfortable，not to mention the cold.知识拓展mention v&n.提到；涉及mention sth.to sb. 向某人提及某事mention doing sth. 提及做某事dont menti

18、on it 不用谢；别客气make (no) mention of (没)提及即学即练单句语法填空Nobody mentioned anything to me about it.The statement made no mention of government casualties.He didnt mention taking(take) sleeping pills regularly.Sentence Patterns不定式作表语(教材P38)My mission was to relieve Emma, a Canadian specialist in infectious di

19、seases at the end of her posting.我的任务是在加拿大传染病专家艾玛任职结束后接替她。句式分析：本句中to relieve Emma是不定式短语，在句中作表语。例1To him，the first important thing was to save lives.对他来说，最重要的事情就是拯救生命。例2His wish is to become a scientist.他的愿望是当一名科学家。造句我们想从实践中学习。What we want is to learn from practice.知识拓展(1)在用不定式作表语的句子中，系动词除be外，还有seem，

20、happen，appear，get，pretend等。(2)句中如果主语部分有实义动词do的各种形式，作表语的不定式实际上是do的引申，即表示do所做的内容，这时不定式可省略to。即学即练单句语法填空The only thing I can do now is (to) go(go) on by myself.He appears to have caught(catch) cold.It is the first/second time从句(教材P40)It is not the first time the author has worked with MSF.这不是作者第一次与无国界医生

21、合作。句式分析：本句中it is the first time后面跟从句，从句谓语用现在完成时；如果前面换为was，从句谓语用过去完成时。例1It is the first time that I have the courage to write something in English in my blog.这是我第一次有勇气在博客上用英文写点东西。例2It is the first time that I have ever seen a man so young and so wise.我是第一次看到这么年轻而又聪明的人。造句这是她一生中第一次住在城市里。It is the first

22、 time that she has ever lived in a city in her entire life.知识拓展(1)its time to do sth.是做某事的时候了。(2)its (high) time that.是做某事的时候了(从句谓语用should do或一般过去式)即学即练单句语法填空You have now finished your first sprint, so its time to start(start) on the next one.Its time that we should take/took(take) action and do our

23、 bits for the AIDS patients.教材高考1.But it is vital not to take any chances.(2019天津卷)Understanding history is vital to understanding ourselves as a people and as a nation.2.I knew I was putting my life at risk.(2018江苏卷) The report found that youngsters felt their friendships could be at risk if they d

24、id not respond to social media posts quickly, and around the clock.3.It assists people based on need, regardless of which country they are from.(2018全国卷) He assists her in cooking matters.单句语法填空1He called and called but no one came to his assistance(assist)2Your offer is tempting, but I cant risk lo

25、sing(lose) my job to do it.3He does not seem to be an old man in his eighties(eighty), considering his appearance.4He is devoted to educating(educate) the younger generation, and content to be, so to speak, a rung of the human ladder.5Our first task was to create(create) a new administrative system.

26、6This is the first time that I have felt(feel) really relaxed for months.7Did she make any mention of having seen(see) me?8People catch all kinds of infections(infection) in winter.9In the university you can specialize in the humanities or the natural sciences.10As a parent, it is vital that you sho

27、uld teach(teach) your child the value of money.短语填空at risk；not to mention；in his 50s；assist.with；devotion to1These tools can then assist you with problem resolution.2Their lack of training could put members of the public at risk3When Marx was already in his 50s, he found it important to study the si

28、tuation in Russia.4Nevertheless, he showed great affection and devotion to his master.5He has two big houses in this country，not to mention his villa in France.课文语法填空When I saw the tragic scenes on the news, I felt it was my duty 1.to go(go) there and offer my help.I knew I was putting my life at ri

29、sk.There are no borders for doctors, patients and anyone 2.involved(involve) in combating Ebola.My mission was to relieve Emma, 3.who talked me through the daily routine and introduced my 4.colleagues(colleague)I was the only Chinese doctor among them.I felt a growing sense of 5.pride(proud), workin

30、g with persons I met.Although the 6.death(die) rate is high, we never gave up on a patient.When a family of six were sent to the clinic, we knew there was little hope for the brothers, but we did everything we could 7.to save(save) them.We were 8.amazed(amaze) to see both boys were still alive.This unexpected success compensated for many other less 9.fortunate(fortune) cases.The tireless work will go on.It is 10.absolutely(absolute) essential for us to collaborate to create a global community with a shared future of peace and prosperity.